Tools for Analyzing the Quality of Mastering

Mar 8, 2018 at 1:24 PM Post #166 of 209
I don't think anyone is creating inferior products deliberately. They're mastering for specific purposes and specific audiences. If most people are listening to an album with earbuds or in their car on AM radio, the compression level needs to be different than if they are listening to it with a high end stereo system in a quiet living room. The trick for the consumer is to determine whether the purpose the music has been mastered for matches the purpose they plan to play it for. The best way to figure that out is to read reviews. But online most people posting in internet forums judge according to general consensus and dogma, not actually listening to it and analyzing what they hear. So you have to parse which people know what they're talking about.

I just buy things at Amazon and return them if they sound crappy. That works too.
 
Mar 8, 2018 at 3:15 PM Post #167 of 209
My view from inside the industry is that all of this is a pipe dream, the higher than standard quality thing has always been, and always will be a tiny niche market relegated to the world of boutique audio.
 
Mar 8, 2018 at 4:03 PM Post #168 of 209
I'm afraid I'll have to agree here. Clipping is a form of limiting, and is actually used that way in every modern broadcast audio processor. However, that does not mean deliberate clipping is audibly bad. There are many ways to use a clipper, and by "clipper" I'm not referring to deliberately overdriving a system, but rather a device or processor made to accomplish precision clipping.

This highlights the problem. There are various forms of clipping, some are (or can be) desirable, even essential, such as over-driving a system but digital clipping caused by hitting 0dBFS is typically (but not always) undesirable in content production. As 0dBFS is a "limit", we could in a sense consider this type of digital clipping to be a form of limiting, however: 1. As a form of compression/limiting, it's relatively useless. There are various reasons for using compression/limiting during production/mastering, for example: To reduce amplitude peaks in order to make the whole track/channel louder or in order to even out an overly dynamic track/channel, to add colour/feel, as a positional tool to bring a channel more to the front of the mix, to help "glue" several channels or a whole mix together and to create effects such as "ducking" or "pumping". Hitting 0dB (clipping) to make the channel/mix louder will typically give us no more than an extra few tenths of a dB, using it to add colour only provides the options of total distortion or no added colour at all but to even out overly dynamic material, as a positional tool or anything else I've mentioned, it's completely useless. 2. As far as I was aware, we were talking about the use of "Limiters", which are hardware or software devices specifically designed to allow us to impose an absolute limit other than 0dBFS (IE. Without clipping).

G

PS. I'll respond to you Husky when I've more time.
 
Mar 8, 2018 at 8:41 PM Post #169 of 209
My view from inside the industry is that all of this is a pipe dream, the higher than standard quality thing has always been, and always will be a tiny niche market relegated to the world of boutique audio.
Your presence here suggests you have at least some interest in hearing that last nth degree of realism....i would hope so considering your choice of work?
 
Mar 8, 2018 at 10:09 PM Post #170 of 209
Your presence here suggests you have at least some interest in hearing that last nth degree of realism....i would hope so considering your choice of work?
Of course. But, and perhaps it's the result of almost 5 decades in this crazy biz, I'm also realistic. I personally detest heavy processing, pretty much in any genre, but I realize it is sometimes definitive, and so I'm resigned to it. I've also applied it deliberately, willfully, and at the request or demand of the client. I also know first hand that you can produce the highest fidelity recording humanly possible, and it will totally fail as a commercial venture. And the people who could effect change either don't know there's a problem, or think what they're doing is already the best. And you know who's right? The guy writing the check.

Yes, I admit, I'm cynical. You younger guys are fee to prove me wrong.
 
Mar 9, 2018 at 1:13 AM Post #171 of 209
I'm a producer, so I am more practical. You produce a product as best as you can to serve a purpose. There isn't a market for audiophile Justin Bieber albums. And the way Mannheim Steamroller records isn't right for other kinds of music and other kinds of audiences. You come up for a strategy for producing an album that works. That isn't cynical. It's doing a job well.
 
Mar 9, 2018 at 4:51 AM Post #172 of 209
1. First of all I reported my personal experiences and what I've read e.g. on forums discussing different releases, where people often advise to prefer the LP because it suffers less from the loudness war.
2. So, respecting your #9, we would have to use "inappropriate over-compression and/or clipping" to describe the means of the loudness war, right? Would be unwieldy, wouldn't it?

1. Yes, you've put 2 and 2 together and come up with 5, an entirely common occurrence in audiophilia where typically only some of the facts are known and the gaps are filled in with assumption (and/or marketing). There is clearly no direct correlation between the loudness war and the recent growth in LP sales, most LPs are cut from the same digital masters as the digital releases anyway. Additionally, the LP version will tend to give a significantly higher DR Database reading than the digital release even though it's exactly the same master. This last point is explained in this video, which is worth watching because it demonstrates why looking at or comparing waveforms is a poor tool for analysing masters.
2. Do you want more "unwieldy" and more accurate or far less unwieldy and far less accurate?
4. Your very absolute and undifferentiated verdict that I wouldn't have read something, that in fact I've read, or wouldn't understand anything, where it is obvious that I understood at least quite a lot, gets really annoying.
4a. As the Death Magnetic CD has extreme loudness, severe distortion and compression, by your previous definition it's perfectly trash metal, whereas the Guitar hero version isn't, as it has very low loudness (compared to what is common these days) and no distortion from clipping.
4b. Do you think there is over-compression in the GH3 version?
4c. If yes, how much would you think there is?
4d. Would be great if you could tell me some more or less corresponding settings in Audacity.
4. Yes, it is "really annoying" and also time consuming, because I've either got to repeat the article (or myself) using different wording to answer or counter the questions and assertions you're asking/making. "It is obvious that [you] understood" very little because if you had "understood at least quite a lot" then you wouldn't be asking these questions or making these assertions! For example:
4a. You're only making this assertion because you have either not read or not understood my "previous definition"! Or maybe you did but you're just misrepresenting my definition because it's too "unwieldy"?
4b. You've got to be joking? The only way you could even ask this question is if you have no idea what a drumkit, bass guitar, lead guitar or shouted vocals sounded like without compression and what heavy/over compression actually sounds like!
4c. Beyond very vague terms like "heavy", it's impossible to say, as I've already stated numerous times!
4d. And how are you going to do that? Does Audacity have a feature that can unmix a mix, so that you could apply for example: 12dB of compression to the bass, 8dB of compression to the vocals, 10dB to the lead guitars and whatever amounts to the instruments in the drumkit and the drumkit sub-mix? And, each of those applications of compression probably with different parameters (which I'm sure Audacity doesn't have)? Again, I've already effectively explained this, didn't you read or understand it?
5b. Indeed, quiet uncompressed music shows lower Z-values than pink noise, so maybe it should show a negative compression indicator instead of a lower limit of 0%.
5b1. Would be great if you could upload some examples with some different and known levels and types of compression, so we can actually test what it shows.
5c. You argument that each genre has a certain amount of compression (what about digital clipping?). What amount exactly and how do you measure it?
5c1. Would you have advised Metallica to either lower the loudness, leaving thrash metal (going to what genre?) or keep their loudness and change their music (in terms of instruments, arrangement and so on) to EDM?
5b. 0% compression is no compression, how can you have less compression (a negative percentage) than no compression? The answer is obviously that the 0% figure is nonsense, it's just an abstract reference point which means that even if ClippingAnalyser were an accurate method of measuring compression, the percentage figures it quotes would still be abstract!
5b1. Again, I've already explained that the only time something exists without compression is after recording and BEFORE mixing and, even just the raw recordings/takes often already contain very significant compression, for example a vocalist who varies their distance from the mic or when recording a bass or lead guitar cab.
5c. I've very clearly stated numerous times that there is no way to accurately measure compression and now you're asking: "How much compression exactly and how do I measure it?" Clearly you have not read what I've written or not understood it, yes, "really annoying"!
5c1. I would have advised that they compromise some of the relative loudness genre requirements of heavy/thrash metal and not be so concerned with matching/exceeding the contemporary genres which are designed from the ground up for loudness maximisation.
6. There are very view classic albums in the DR database. Let's look at Tchaikowsky: 12 entries for 8 different releases, where the latest relase has the lowest DR. Schubert has even less (and I think it may be difficult to compare a symphony to a piano trio). Beethoven has some more (38 entries, 30 releases) with a tendency to get louder.
9. From Wikipedia: "Clipping is an extreme version of limiting." You may discuss it there.
9. c) Yes, I know you could scandalise and that's deplorable. In my view as a listener, that's a big part of the problem with the loudness race, it's a herd like behavior. It seems people in the industry were afraid of achieving good sound quality because the result could be less loud than others.
6. I'm not sure what you are trying to accomplish here? There are not 12 entries for "Tchaik", there are 34. There are 25 for "Schubert". "Beeth" does not have 38 entries, there are 121 entries and the most recent few actually have a slightly higher DR score than the oldest few, which is completely the opposite of what you are trying to assert!

9. I've already discussed it here (in my response to pinnahertz).
9c. What "herd" is saying that I should mix and master Debussy as I would Metallica (or vice versa)? It's certainly NOT the engineering herd, the musician or record label herds. Maybe you're referring to the audiophile herd or maybe you're just making a ridiculous assertion because you have no understanding of how genre affects mixing/processing/mastering?
10. I'd like to heed bigshot's advice and learn from you. And I'd like to get the discussion more constructive. So let me ask:
a) What can be done to end the loudness war [10a1] and set the goal on better sound quality?
b) What have you done and could you do personally as an engineer?
c) What can consumers do?
10a. Potentially two things in combination might: 1. The universal adoption of the ITU's loudness normalisation paradigm and 2. Time. Time for the creators of modern genres to realise the implications of loudness normalisation on their compositions/productions and then time for these genres to evolve away from being constructed for maximum compression/limiting.
10a1. The goal is already "set on better sound quality"! However it's a goal which is typically thwarted to some degree by the consumer demand to spend less money (and therefore less time) making recordings. And, you also have to define "better sound quality" because "better sound quality" typically means more compression due to typical listening circumstances of consumers.
10b. Same answer for both: Attempt to educate my clients. Also potentially to educate consumers, but unfortunately most consumers are simply not interested in the loudness war and many/most of those who are interested are only interested in pre-conceived notions rather than the actual facts, as you appear to be demonstrating!
10c. Vote with their wallets. Unfortunately, they've largely voted for the loudness war and that's why there is one! If enough people complained and demanded refunds if there were not a version with an "appropriate amount of compression", that would definitely have an impact. The "Death Magnetic" CD debacle definitely had an impact but that's just one small impact on just one sub-genre.

G
 
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Mar 11, 2018 at 8:21 PM Post #173 of 209
1. a)
You try to put me in a corner that doesn't fit at all. The fact that I like to have good sound quality doesn't mean that I were an audiophile in your negative terms. If you look at my postings this should be more than clear. I like blind tests, I like a scientific approach, I don't believe in any marketing blah or voodoo, etc.
b)
Thanks for the link to the video, very interesting indeed. I knew of course that there is always some difference in DR between CD and LP even with the same master (due to filters, mechanics etc.), but I haven't thought it would be that big. Unfortunately on that example we don't exactly know what happened to the signal between using the master as a base for cutting the LP and recording it from the turntable.
Would be interesting to analyze both tracks in ClippingAnalyzer.

2.
It has to be usable.

4. b)
I know how these instruments sound for real. But I don't have any recording of these at hand were I could say it was 100% for sure without any compression at all.
As you didn't define what heavy/over exactly means and didn't provide comparative examples, I have to ask.
c)
You claim each genre needs a certain amount of appropriate (over-)compression. But if it comes to a reproducible definition, you seem to evade.
d)
Why should I want to unmix? I simply want to understand what kind of compression you think was applied. Then I'd be able to test it on other material (test records, pink noise etc.).
There are some multi-track versions e.g. of Nirvana floating around in the internet. I don't know how much and what kind of compression there is, would be interesting. Some years ago I quickly tried to create my own mix from that (not easy at all).
For the built-in compressor in Audacity see: http://manual.audacityteam.org/man/compressor.html
Or any free compatible plugin (https://www.audacityteam.org/download/plug-ins/). (As an alternative I should have access to an old Audition 3.0 somewhere in my archive.)
Looking forward to your parameters.

5. b)
0% compression indicator is not the same as 0% compression, as already explained. So, yes, it's an abstract figure, like many others. Seems you don't like figures and measurements?
Have you tried to understand how it works at all? Have you read any of the descriptions and links I provided?
b1)
It's a pity that you don't upload any examples, I've hoped that you'd have some in your archive e.g. from your work. Would be much easier to understand each other.
c)
I hope you finally get the point now:
You claim that each genre demands a certain amount of compression (and/or loudness, where it doesn't seem to be clear if you include limiting and clipping), but you can't tell how much. If you want to make sure that you apply the right amount compared to other tracks in the genre, shouldn't you be able to quantify this somehow, at least by your ears?
If you can't (and are unwilling to use summary indicative measures), maybe the whole concept of having to be as compressed/loud as others in the genre is absurd.

I totally agree that there is no magic measure where you could analyze a track and exactly replicate what was done to the signal on the path from the recording to the CD. I've never ever pretended anything else. But I gave some examples where measures and visuals (incl. the waveform) clearly show differences between more or less compressed/limited/clippped tracks, don't you think so?

6.
I searched for the artist instead of the album, sorry.
Tchaik: 35 entries from 31 albums (there are separate entries for the same album, e.g. separate discs).
Schubert: 25 entries from 20 albums (2 have nothing to do with classical Schubert).
Beeth: 121 entries from 103 albums (some non-classical, some separate discs etc.).
There is no clear tendency in DR, but there are some very low DR values on later years. So no, it's not the opposite.

9. c) Let it be the genre herd then...

10. a) 1)
Maybe you think of someone with cheap open ear plugs commuting in the underground or the cheapest stereo radio in a loud car as typical listening environment and target that?
So listening at home or with good equipment we suffer from bad sound quality and can't do anything against it.
And even with cheap equipment an extreme victim of the loudness war sounds worse than a transparent dynamic track (if not in a noisy environment) in my experience.
10. b)
Great if you try to educate your clients and consumers. But to be honest, I can't exactly imagine how you'd do that convincingly regarding what you've written so far.
10. c)
It's difficult to vote with the wallet if there is no alternative. As the musical content is more important to people than the sound quality (see posts above), it's a mistake to interpret high sales of some loud albums as a vote for loudness war.
When consumers complain, the reaction (if any at all) is basically the same as yours: it's OK as it is, because it's what the artist wants, what the genre needs, can't be heard, is needed for the typical listening, measures don't tell, sells best, is appropriate, the engineer knows what he does, ...

11.
So, if you were a consumer like me, what would you argument towards artists/engineers/labels to fight the loudness war and improve sound quality?
 
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Mar 11, 2018 at 8:43 PM Post #174 of 209
My advice is to buy from Amazon, listen to it carefully, and return it if you don't like the way it sounds. I do that when I run across a bum disc. I think referring to arbitrary charts and diagrams is pointless. How it sounds is what matters.
 
Mar 12, 2018 at 1:04 PM Post #176 of 209
1. a) You try to put me in a corner that doesn't fit at all. The fact that I like to have good sound quality doesn't mean that I were an audiophile in your negative terms. If you look at my postings this should be more than clear. I like blind tests, I like a scientific approach, I don't believe in any marketing blah or voodoo, etc.
b) Thanks for the link to the video, very interesting indeed. ... Unfortunately on that example we don't exactly know what happened to the signal between using the master as a base for cutting the LP and recording it from the turntable. Would be interesting to analyze both tracks in ClippingAnalyzer.
2. It has to be usable.

1a. You stated that your opinion is based on your personal experience and what you've read on consumer forums. As that's exactly what most misinformed audiophile opinion is based on, how is your opinion any different?
1b. No, we don't know for sure what was done between the mastering and the playback/re-recording but we do know for sure what wasn't done. We know for sure that the compression/limiting applied to the digital recording is the same as to the vinyl version because it's the exact same master (and compression/limiting cannot be "undone")! Yes, it would be interesting to measure it with ClippingAnalyser, although I expect a similar result to the DR meter.
2. Then we have a problem, neither is usable as one is apparently "unwieldy" and the other inaccurate and misleading.
4. b) I know how these instruments sound for real. ... [4b1] As you didn't define what heavy/over exactly means and didn't provide comparative examples, I have to ask.
c) You claim each genre needs a certain amount of appropriate (over-)compression. But if it comes to a reproducible definition, you seem to evade.
d) Why should I want to unmix? I simply want to understand what kind of compression you think was applied. ... Looking forward to your parameters.
4b. If you know how instruments sound for real then surely it should be quite easy to tell the difference between real instruments and real instruments which have been heavily compressed?
4b1. I didn't define it because it could mean a number of different things and additionally, they're all pretty much relative. For example, 6dB of compression could be "heavy" compression on some material, while on other material it might be virtually inaudible. It all depends on what material you have to start with and what you want it to sound like when you're finished, a fact you seem intent on eliminating from your understanding of the issue.
4c. Again, this comes back to the same answer as 4b and 4b1. I'm evading an accurate/precise reproducible definition because the truth of the matter is that there is not and can not be one. However, you apparently do not believe and/or cannot understand this truth and you therefore just keep asking and asserting the same thing over and over again, regardless of what information you're provided with!
4d. Again, you clearly haven't read or understood what has already be posted! Your question is nonsense, so I'll try one last time using a fictional but typical example: Let's say we've recorded a drumkit (kick, snare, hihat and toms), a vocal, a bass and a lead guitar. The kick will be compressed by some amount, let's say 8dB (although it might be much more with some genres), the snare compressed by say 4dB, the toms by say 6dB and the Hihats by 2dB. All these (already compressed) instruments will then be routed through a drumkit sub-group, which has another compressor (and/or limiter) with somewhat different parameters and let's say adds another 5dB of compression. What parameters and amount of compression could I suggest you apply if all you had was the drumkit mix and could not unmix it? Of course though, that's just the start. The guitars are plugged into guitar amps and speakers, both of which deliberately add massive distortion (inc. over-compression), both of which have significantly different (and non-linear) parameters and both of which are significantly different for each of the guitars (bass and lead) and, this is before we even record them! Once we've recorded them, then more compression will be added during mixing, a quite different compressor to the compression added prior to recording and a compressor likely to have quite different parameters to the ones used on the drumkit. Then we have the vocal, which may have been recorded with a type of compression (vocalist moving closer and further from the mic for example) and then more compression added during mixing, around 6dB would be common and again, probably quite different parameters to any of the other compressors employed on any of the other instruments and sub-groups. Furthermore, any of the parameters (inc. the overall amount of compression) of any of the compressors/limiters on any of the instruments may well change throughout the piece (say between verses and choruses for example). How is your compressor going to emulate all these different amounts and parameters of compression at the same time? How is it going to apply say 13dB of compression to the kick but only 6dB to the vocal without "unmixing" the mix (separating the vocal from the kick)? What (desirable) non-linear distortion/compression was caused by the guitar amps/cabs and how can your (or any) compressor emulate that? Even if all the parameters of all the compressors/limiters were known throughout the piece, how could I provide you with a single set of parameters/settings which could even vaguely emulate all of this? Surely you must see that your question is nonsense and that it could only be asked by someone ignorant of the recording and mixing processes?
5. b) 0% compression indicator is not the same as 0% compression, as already explained. So, yes, it's an abstract figure, like many others. Seems you don't like figures and measurements?
b1) It's a pity that you don't upload any examples, I've hoped that you'd have some in your archive e.g. from your work.
c) I hope you finally get the point now:
[5c1] You claim that each genre demands a certain amount of compression (and/or loudness, where it doesn't seem to be clear if you include limiting and clipping), but you can't tell how much. If you want to make sure that you apply the right amount compared to other tracks in the genre, shouldn't you be able to quantify this somehow, at least by your ears?
If you can't (and are unwilling to use summary indicative measures), maybe the whole concept of having to be as compressed/loud as others in the genre is absurd.
[5d] I gave some examples where measures and visuals (incl. the waveform) clearly show differences between more or less compressed/limited/clippped tracks, don't you think so?
5b. On the contrary, I do like figures and measurements. There's only one thing I dislike more than no figures and measurements and that's figures and measurements which are incorrect and misleading, those types of figures and measurements I hate with vengeance! And that's what we've got here, a measurement of 0% compression which doesn't mean 0% compression, which in fact doesn't give any reliable measurement of the percentage of applied compression at all. A measurement of say 10% compression, could in fact be no compression at all or it could be quite a lot, it's clearly inaccurate and highly misleading!
5b1. What example would you like me to upload? Maybe an electric guitar before it's been recorded or even plugged into an amp/cab, how am I going to upload something before it's been played and recorded? How about a recording of the vocalist with their head in a clamp? Maybe you'd like an "unmixed" mix? Even if what you wanted were possible (which obviously it isn't!), still I couldn't give it to you, it's not my material to distribute.
5c. Yes, I do finally get the point now, but to be honest I got the point quite some time ago and that point is: You have little/no idea what the recording, mixing and mastering processes actually are or what, how and when compression and limiting are applied.
5c1. No, you are not reading or not understanding what's been posted! I can determine loudness quite accurately, both subjectively and with measurement tools. I can also determine the amount of compression which has been added but only subjectively and only very vaguely. However, I can calculate the amount of compression I need to add to a particular mix during mastering in order to match a required level of loudness. The amount (and other parameters) of compression/limiting I actually apply in mastering is entirely determined by ALL of the following: 1. The amount of compression/limiting appropriate for the genre, 2. The amount of compression/limiting already applied during mixing and 3. The loudness (and other sonic characteristics) required by the client. - Because of these factors, +1dB of compression/limiting during mastering could be "inappropriate over-compression" while in another case +12dB might also be "inappropriate" but because it's not enough!
5d. And I gave you an example (in the previously linked video), "where measures and visuals (incl. the waveform) clearly show differences between more or less compressed/limited/clippped tracks" but where we know for certain that the amounts of compression/limiting are in fact identical. So no, I obviously "don't think so" and neither would any other rational mind!
6. There is no clear tendency in DR, but there are some very low DR values on later years. So no, it's not the opposite.
9. c) Let it be the genre herd then...
6. And in some cases there are higher DR values in the most recent years, which is the exact opposite of what you've stated. However, I agree that overall there is "no clear tendency in DR", but this fact contradicts your repeated assertion, as there would be an obvious tendency towards significantly lower DR if classical music recordings were subject to the loudness war! You've got no practical knowledge/experience of how classical music is recorded, mixed or mastered and the only indicator we have (the DR Database) contradicts your belief and yet you keep asserting and defending that unsupported belief, even in the face of someone who has considerable professional experience of classical music recording. How is this any different to the audiophile who keeps asserting and defending an audiophile myth?

9c. I've no idea what you're trying to say here. A genre is defined by a "herd", without a herd there is no genre, just a single piece of music which is unlike any other. A music "genre" is a significant number of pieces by a number of different composers/creators which have a number of specific traits in common.
10. a) 1) Maybe you think of someone with cheap open ear plugs commuting in the underground or the cheapest stereo radio in a loud car as typical listening environment and target that?
[10a2] So listening at home or with good equipment we suffer from bad sound quality and can't do anything against it.
10. b) Great if you try to educate your clients and consumers. But to be honest, I can't exactly imagine how you'd do that convincingly regarding what you've written so far.
10. c) It's difficult to vote with the wallet if there is no alternative.
[10c1] As the musical content is more important to people than the sound quality (see posts above), it's a mistake to interpret high sales of some loud albums as a vote for loudness war.
[10c2] When consumers complain, the reaction (if any at all) is basically the same as yours: it's OK as it is, because it's what the artist wants, what the genre needs, can't be heard, is needed for the typical listening, measures don't tell, sells best, is appropriate, the engineer knows what he does, ...
10a1. What I think is irrelevant, what's relevant is what my clients (artists, labels, etc.) think. What they "think", I do, or I attempt to do depending on the mix I've been given to master.
10a2. No! Most likely you are listening to "good sound quality" but on inappropriate equipment and/or listening circumstances. Bigshot's post #166 explains that. What about his post did you not understand?
10b. Agreed! In my defence though, what could I have written which would convince someone who clearly has erroneous, strongly held beliefs and refuses to accept the actual facts or be convinced?
10c. There's always an alternative. No one is holding a gun to your head and forcing you buy a recording.
10c1. You have some evidence to back up that assertion do you? Again, clearly some genres depend on loudness. You've never answered the question of what we would be left with if we removed loudness/heavy compression/distortion from heavy metal. You are making a simple assertion which does NOT fit the actual facts and you get round that problem by simply ignoring those facts!
10c2. Firstly, how do you know what reaction there is in the industry, you're not privy to the industry? And secondly, your characterisation of my reaction is a lie, at least try not to be so ridiculous about it! For example, how can it not be obvious that I don't always react that it "is appropriate", did you not read that I felt the CD version of Death Magnetic was "inappropriate"?
11.So, if you were a consumer like me, what would you argument towards artists/engineers/labels to fight the loudness war and [11a] improve sound quality?
11. Already asked and answered.
11a. That you and a very significant number of other consumers define exactly what you mean by "better sound quality" and that you all will more than cover the cost of it.

G
 
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Mar 12, 2018 at 1:30 PM Post #177 of 209
When I was in college, I studied Folklore as a minor. I had a week to read Chaucer's Canterbury Tales in the original Middle English. It looked like this...
WHAN that Aprille with his shoures soote1 The droghte 2 of Marche hath perced to the roote, And bathed every veyne in swich 3 licour, Of which vertu engendred is the flour; Whan Zephirus eek with his swete breeth Inspired hath in every holt and heeth The tendre croppes, 5 and the yonge sonne Hath in the Ram his halfe cours y-ronne,6

Every line had a half dozen footnotes translating the words one by one. The notes only translated each word once, so I had to write out my own freehand dictionary. It was the most excruciating reading experience of my life. Grasping context was all but impossible. I struggled, reading every line over and over. After I finished the course (with a B- by the skin of my teeth) I discovered that the course had been designed to weed people out of the Folklore major who didn't belong there. I got very little out of it, except the determination never to read anything like that again!

If you're interested, here are the footnotes for that sentence....
Note 1. Its sweet showers. Note 2. Drought. Note 3. Such. Note 4. Wood. Note 5. Young shoots. Note 6. The sun left the sign of the Ram about the middle of April.

Even translated, it's still a tough schlog...
When in April the sweet showers fall That pierce March's drought to the root and all And bathed every vein in liquor that has power To generate therein and sire the flower; When Zephyr also has with his sweet breath, Filled again, in every holt and heath, The tender shoots and leaves, and the young sun His half-course in the sign of the Ram has run,
 
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Mar 12, 2018 at 7:02 PM Post #178 of 209
When I was in college, I studied Folklore as a minor. I had a week to read Chaucer's Canterbury Tales in the original Middle English. It looked like this...


Every line had a half dozen footnotes translating the words one by one. The notes only translated each word once, so I had to write out my own freehand dictionary. It was the most excruciating reading experience of my life. Grasping context was all but impossible. I struggled, reading every line over and over. After I finished the course (with a B- by the skin of my teeth) I discovered that the course had been designed to weed people out of the Folklore major who didn't belong there. I got very little out of it, except the determination never to read anything like that again!

If you're interested, here are the footnotes for that sentence....


Even translated, it's still a tough schlog...
You sir are a true badass...basically learned a new language to read 24 short stories.
 
Mar 14, 2018 at 7:41 PM Post #179 of 209
1a. You stated that your opinion is based on your personal experience and what you've read on consumer forums. As that's exactly what most misinformed audiophile opinion is based on, how is your opinion any different?
1b. No, we don't know for sure what was done between the mastering and the playback/re-recording but we do know for sure what wasn't done. We know for sure that the compression/limiting applied to the digital recording is the same as to the vinyl version because it's the exact same master (and compression/limiting cannot be "undone")! Yes, it would be interesting to measure it with ClippingAnalyser, although I expect a similar result to the DR meter.
2. Then we have a problem, neither is usable as one is apparently "unwieldy" and the other inaccurate and misleading.

4b. If you know how instruments sound for real then surely it should be quite easy to tell the difference between real instruments and real instruments which have been heavily compressed?
4b1. I didn't define it because it could mean a number of different things and additionally, they're all pretty much relative. For example, 6dB of compression could be "heavy" compression on some material, while on other material it might be virtually inaudible. It all depends on what material you have to start with and what you want it to sound like when you're finished, a fact you seem intent on eliminating from your understanding of the issue.
4c. Again, this comes back to the same answer as 4b and 4b1. I'm evading an accurate/precise reproducible definition because the truth of the matter is that there is not and can not be one. However, you apparently do not believe and/or cannot understand this truth and you therefore just keep asking and asserting the same thing over and over again, regardless of what information you're provided with!
4d. Again, you clearly haven't read or understood what has already be posted! Your question is nonsense, so I'll try one last time using a fictional but typical example: Let's say we've recorded a drumkit (kick, snare, hihat and toms), a vocal, a bass and a lead guitar. The kick will be compressed by some amount, let's say 8dB (although it might be much more with some genres), the snare compressed by say 4dB, the toms by say 6dB and the Hihats by 2dB. All these (already compressed) instruments will then be routed through a drumkit sub-group, which has another compressor (and/or limiter) with somewhat different parameters and let's say adds another 5dB of compression. What parameters and amount of compression could I suggest you apply if all you had was the drumkit mix and could not unmix it? Of course though, that's just the start. The guitars are plugged into guitar amps and speakers, both of which deliberately add massive distortion (inc. over-compression), both of which have significantly different (and non-linear) parameters and both of which are significantly different for each of the guitars (bass and lead) and, this is before we even record them! Once we've recorded them, then more compression will be added during mixing, a quite different compressor to the compression added prior to recording and a compressor likely to have quite different parameters to the ones used on the drumkit. Then we have the vocal, which may have been recorded with a type of compression (vocalist moving closer and further from the mic for example) and then more compression added during mixing, around 6dB would be common and again, probably quite different parameters to any of the other compressors employed on any of the other instruments and sub-groups. Furthermore, any of the parameters (inc. the overall amount of compression) of any of the compressors/limiters on any of the instruments may well change throughout the piece (say between verses and choruses for example). How is your compressor going to emulate all these different amounts and parameters of compression at the same time? How is it going to apply say 13dB of compression to the kick but only 6dB to the vocal without "unmixing" the mix (separating the vocal from the kick)? What (desirable) non-linear distortion/compression was caused by the guitar amps/cabs and how can your (or any) compressor emulate that? Even if all the parameters of all the compressors/limiters were known throughout the piece, how could I provide you with a single set of parameters/settings which could even vaguely emulate all of this? Surely you must see that your question is nonsense and that it could only be asked by someone ignorant of the recording and mixing processes?

5b. On the contrary, I do like figures and measurements. There's only one thing I dislike more than no figures and measurements and that's figures and measurements which are incorrect and misleading, those types of figures and measurements I hate with vengeance! And that's what we've got here, a measurement of 0% compression which doesn't mean 0% compression, which in fact doesn't give any reliable measurement of the percentage of applied compression at all. A measurement of say 10% compression, could in fact be no compression at all or it could be quite a lot, it's clearly inaccurate and highly misleading!
5b1. What example would you like me to upload? Maybe an electric guitar before it's been recorded or even plugged into an amp/cab, how am I going to upload something before it's been played and recorded? How about a recording of the vocalist with their head in a clamp? Maybe you'd like an "unmixed" mix? Even if what you wanted were possible (which obviously it isn't!), still I couldn't give it to you, it's not my material to distribute.
5c. Yes, I do finally get the point now, but to be honest I got the point quite some time ago and that point is: You have little/no idea what the recording, mixing and mastering processes actually are or what, how and when compression and limiting are applied.
5c1. No, you are not reading or not understanding what's been posted! I can determine loudness quite accurately, both subjectively and with measurement tools. I can also determine the amount of compression which has been added but only subjectively and only very vaguely. However, I can calculate the amount of compression I need to add to a particular mix during mastering in order to match a required level of loudness. The amount (and other parameters) of compression/limiting I actually apply in mastering is entirely determined by ALL of the following: 1. The amount of compression/limiting appropriate for the genre, 2. The amount of compression/limiting already applied during mixing and 3. The loudness (and other sonic characteristics) required by the client. - Because of these factors, +1dB of compression/limiting during mastering could be "inappropriate over-compression" while in another case +12dB might also be "inappropriate" but because it's not enough!
5d. And I gave you an example (in the previously linked video), "where measures and visuals (incl. the waveform) clearly show differences between more or less compressed/limited/clippped tracks" but where we know for certain that the amounts of compression/limiting are in fact identical. So no, I obviously "don't think so" and neither would any other rational mind!

6. And in some cases there are higher DR values in the most recent years, which is the exact opposite of what you've stated. However, I agree that overall there is "no clear tendency in DR", but this fact contradicts your repeated assertion, as there would be an obvious tendency towards significantly lower DR if classical music recordings were subject to the loudness war! You've got no practical knowledge/experience of how classical music is recorded, mixed or mastered and the only indicator we have (the DR Database) contradicts your belief and yet you keep asserting and defending that unsupported belief, even in the face of someone who has considerable professional experience of classical music recording. How is this any different to the audiophile who keeps asserting and defending an audiophile myth?

9c. I've no idea what you're trying to say here. A genre is defined by a "herd", without a herd there is no genre, just a single piece of music which is unlike any other. A music "genre" is a significant number of pieces by a number of different composers/creators which have a number of specific traits in common.

10a1. What I think is irrelevant, what's relevant is what my clients (artists, labels, etc.) think. What they "think", I do, or I attempt to do depending on the mix I've been given to master.
10a2. No! Most likely you are listening to "good sound quality" but on inappropriate equipment and/or listening circumstances. Bigshot's post #166 explains that. What about his post did you not understand?
10b. Agreed! In my defence though, what could I have written which would convince someone who clearly has erroneous, strongly held beliefs and refuses to accept the actual facts or be convinced?
10c. There's always an alternative. No one is holding a gun to your head and forcing you buy a recording.
10c1. You have some evidence to back up that assertion do you? Again, clearly some genres depend on loudness. You've never answered the question of what we would be left with if we removed loudness/heavy compression/distortion from heavy metal. You are making a simple assertion which does NOT fit the actual facts and you get round that problem by simply ignoring those facts!
10c2. Firstly, how do you know what reaction there is in the industry, you're not privy to the industry? And secondly, your characterisation of my reaction is a lie, at least try not to be so ridiculous about it! For example, how can it not be obvious that I don't always react that it "is appropriate", did you not read that I felt the CD version of Death Magnetic was "inappropriate"?

11. Already asked and answered.
11a. That you and a very significant number of other consumers define exactly what you mean by "better sound quality" and that you all will more than cover the cost of it.

G
1. a)
Personal experience and tests, talks with artists (one of them produces himself professionally), several forums, all kind of articles and papers from the internet and from consumer audio journals, TV shows where they produce a song, talks with friends, etc., but no direct discussion with an engineer until this one.
It seems you don't like people who dare to criticize what engineers do to the sound and try to trivialize by calling them misinformed audiophiles.
1. b)
Yes, compression/limiting cannot be "undone" (because we can't reproduce all the steps backwards and parts of the signal may be lost by clipping), but there are tools like http://www.perfectdeclipper.com/
4.
Thanks for your more detailed explanation. I understand that it's difficult to generalize and simplify a complex work to some exemplary settings.
Often I have the impression there is done rather too much to the signal, where I think the music would benefit from more life and naturalness from less compression/limiting.
4. c)
I fully understand that there is no reproducible definition. In fact that's exactly my opinion and what I wanted to hear from you, because in effect I think it means a genre doesn't dictate a certain well defined amount of compression/limiting. So there is some freedom (for whoever is able to vote or decide about it) and it would be great to use it for transparent, natural and lively sound.
4. d1)
With compression by XdB, do you mean the difference in RMS of the edited part?
4. d2)
I've found a drum kit on an old CD from a magazine, where compression was shown from "uncompressed" to "compressed 1:16" (RMS difference is 0.5 in total, 7dB on some strokes). Now I'd like to apply some of the compression steps you mention on the "uncompressed" track. Let's assume the drum kit was recorded without compression. What could be typical settings (threshold, ratio, etc.)?
I have some additional questions:
4. e)
Here you tell about recording and mixing only. In your 5.c1 the mastering engineer gets the mix and often adds some compression/limiting on it without "unmixing", right? What's your experience here, if you'd try to tell an average over all, e.g. in pop music, how much is added? Maybe you could tell me some typical settings here?
4. f)
Let's assume in 5 years a label boss wants to re-release albums with less loudness than the original release, typically would it be possible (without any tricks like expander or declipper)?
Would it be necessary to do the mix again to get a quite noticeable improvement (e.g. DR6 -> DR12)? If yes, typically are the original recordings stored for a long time (e.g. 20 years)?
5. c)
Well, obviously I'm not a mixing or mastering engineer, but a consumer with some knowledge, who has tried to understand why exactly the sound quality has gotten worse, learned about the loudness war and looked for means to analyze and document it.
5. c1)
On the bottom line it's about personal taste (of the involved people and of what they think would sell) and loudness targets (so we end in the loudness race...).
5. d)
The amount of compression/limiting is identical in the master, not in the tracks. There is analog distortion added to the master on the vinyl track, in a way that DR (RMS) is lowered, flat areas aren't flat anymore. As a result, it sounds different. That's what clearly can be seen on the waveform. So, in this example the waveform alone simply doesn't tell us the reason - does it come from a different master or from what happened afterwards up to the recording from the turntable.
6.
Maybe there are only some outlier and maybe classical is the only big genre with no loudness war. I hope so. Can you say that you haven't heard of anybody who wanted to increase loudness in classical (compared to earlier releases)? Would be calming.
10. a2)
Ah, it's my problem, because to enjoy your good sound quality I'd have to sit in a noisy car and listen via AM radio. Listening at home are inappropriate circumstances, using good headphones is inappropriate equipment. Well, then we really have a very different definition of good sound quality.
To find the music (not genre!!) that is mixed and mastered in a way that is suitable for listening at home or with good equipment then is not only the trick, as bigshot wrote, but a very big, time consuming and nearly unsolvable problem!
And regarding the equipment: when I look at all the people walking around with big headphones, the raise of noise cancelling, the good sound quality of current mobile devices, maybe the target audience isn't that different.
10. b)
The question was, what have you done and could you do personally as an engineer to end the loudness war and set the goal on better sound quality.
You answered you'd attempt to educate clients and potentially consumers.
My answer was, that I can't exactly imagine how you'd do that convincingly regarding what you've written so far.
Meaning, how can you educate to end the loudness war and move towards better sound quality (appropriate to listening at home or with good equipment). So, do your clients have erroneous, strongly held beliefs and refuse to accept the actual facts or be convinced?
I think you don't have to educate me in order to end the loudness war and set the goal on better sound quality, do you?
10. c)
Yes, the alternative is not to pay for affected recordings. (Doesn't mean not to listen to it as long as the musical content outweighs the bad sound quality). Very frustrating.
10. c1)
Besides of the posts here, you may look at http://productionadvice.co.uk/research-loudness-sales/
10. c2)
It's the reaction I've already heard (myself) and read the most.
Death Magnetic is a really extreme example. Amy Winehouse as well, you wrote that you wouldn't have done it the same, so I guess you agree that it was "inappropriate". When I ask you about Adele (e.g. Skyfall): appropriate or not?
Or let's assume I listened to a record you engineered and thought it's too blurry and distorted, and would tell you that I think there is too much compression/limiting. Wouldn't you argue that there is an appropriate amount?
11.
See above. Yes, I'd be willing to pay for it. But not gold-plate it (because I feel too robbed by the music industry in the past).
And as already proposed, to solve the conflict between sound quality targeted at lowest-cost equipment in very noisy environment vs. good equipment in quieter environments, the consumer could be given the choice between two versions of a piece.
The industry was able to promote high-res formats despite the minimal to non-existent audible differences, so why not promote a high-dynamics version where the differences are quite audible?
 
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Mar 14, 2018 at 10:22 PM Post #180 of 209
I hope I'm allowed to post these snippets.
Snippets.zip

Thanks! I don't know how we're supposed to discuss things we can hear if we can't hear them. Have only had a chance for a cursory listen. Had to align and match loudness a bit for a fair comparison. One difference that stood out was that the first 'cymbal' hit has just a tad of edge taken off in the mastered version. Anything else will take more time with the track to notice. That's probably not a great indication that this is an obvious exemplar of the evils of the loudness war, though...

As far as the loudness war in Classical: be very careful using results from the DR database for making any judgements. The database hasn't anywhere near a reasonable chunk of the classical corpus with measurements. I would wager, for instance, that the Minnesota/Vänskä LvB cycle would leverage up that least-squares fit.
 

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