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frequency sweeps for free?

post #1 of 27
1/28/02 at 1:50am
Thread Starter 
In true audiophile voodoo spirit...

Someone else posted a link to a winamp plugin for white noise generation. I'm wondering if there are any other burn-in programs and or computer generated anythings of that sort.

I know that the discs that are made for this are <insert copyright rhetoric here>, I just assume that some amateurs have probably done something similar either in the form of mp3 or other audio file formats or in something programatic--which would be a lot more fun and interesting to me.

If anyone has anything, please post it.

Kelly
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post #2 of 27
1/28/02 at 2:06am
Hmm a great source for break-in is your DI/O itself, just play with it until you do not get a lock and instead, a deadly hiss... that should be sufficient noise where all frequencies are played to break things in...
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post #3 of 27
1/28/02 at 7:56am
Search for 'Stomper Hyperion'.

It's meant to be a sound synthesizer for sound effects to add to the mix but the only thing I've ever done with it is to make frequency sweeps
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post #4 of 27
1/28/02 at 5:03pm
The demo version of Cool Edit 2000 is completely functional; it merely limits you to picking two of six subsets of the program's functionality. So, pick the waveform generation subset and the file-save subset, and you're off.

Course, Cool Edit is just so damn cool you might just want to buy it anyway!
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post #5 of 27
1/28/02 at 6:08pm
Lol, you guys are weird, audiophile burn in CDs, heh, how odd, just use your own music that you listen to most.
But if you guys really want, I can make two one minute(10MB/ea) wav files concisting 10 seconds each of brown, pink, and white noise, three different tones (modulations of your choice) one without phasing (delay effects) and one with using cool edit pro and upload it to you.
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post #6 of 27
1/28/02 at 9:29pm
Quote:
you guys are weird
Maybe you're understanding this thread differently, but when I think about frequency sweeps, I think about frequency response testing, not burn-in. I've discovered many interesting things about my sources and cans by running a simple frequency sweep. Like, the weird flaw I found in my Expanium 103 that's obvious with a frequency sweep but hard to hear within music.
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post #7 of 27
1/28/02 at 10:14pm
Yea, but why bother? What you don't know can't hurt you. =)
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post #8 of 27
1/29/02 at 1:05am
Quote:
What you don't know can't hurt you.
keep em' dumb and happy, huh?


We rather know!

oh, I posted that plug-in, and here's the other one :

STOMPER Hyperion 5.0
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post #9 of 27
1/29/02 at 9:15am
All right, lets end this darn "audiophile method of burn in" hype.

I have made (using Syntrillium Cool Edit Pro) 8 different wav files, totaling 4:50min (48.7MB uncompressed wav).
These concist of the following noise and frequency modulations:
brown noise
pink noise
white noise
0hz-40hz
40hz-440hz
440hz-12khz
12khz-16khz
16khz-20khz(I can hear changes of frequency levels this high, but I can't distinguish any continuous waves of 17.5khz and higher, does this mean my upper frequency hearing is damaged?)
22khz-39khz(HD600 max freq response according to Sennheiser )
Low frequency sweep (0-100hz, 20hz-80hz, 40hz-60hz, phasing)

All wav files compressed into one winrar sfx (self executable) final file size comes to: 34.2MB

I can send this file, or each wav individually (or you pick the ones you want) by uploading to an ftp (I can provide one if not available), file transfer programs such as DCC through IRC, or icq, etc.
So if you are interested, drop me an email or a private message and I'll get back to you.

BTW, I have no idea what good this would do besides maybe be more efficient in break in (as in doesn't take as long)... But wouldn't you rather listen to music during break in? I know I do.
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post #10 of 27
1/29/02 at 12:49pm
Quote:
I can't distinguish any continuous waves of 17.5khz and higher, does this mean my upper frequency hearing is damaged?
It means you're an adult. The whole "20-20kHz" thing is an ideal. Some adults manage to maintain something close to that range, but most lose a lot of HF.

The real problem is when you start getting "notches" in your hearing response. That's actual damage, and not -- to put it colorfully -- calcification.

Quote:
I can send this file...34.2 MB
Much better to send copies of Cool Edit and these instructions, no?
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post #11 of 27
1/29/02 at 12:53pm
Encode that to 3-6MB worth of MP3 for those who really do not feel like downloading uncompressed files... not like there is a groundbreaking difference...

Also, can you make 15hz, 20hz, 18khz, and 20khz solid tones? I would be interested in getting those.
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post #12 of 27
1/29/02 at 12:55pm
Thread Starter 
Quote:
Originally posted by chych
Encode that to 3-6MB worth of MP3 for those who really do not feel like downloading uncompressed files... not like there is a groundbreaking difference...

Also, can you make 15hz, 20hz, 18khz, and 20khz solid tones? I would be interested in getting those.
Doesn't mp3 compression drop the upper frequencies?

Kelly
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post #13 of 27
1/29/02 at 1:24pm
Quote:
Doesn't mp3 compression drop the upper frequencies?
Only some encoders do. That's one of MP3's biggest problems, by the way -- if one encoder does something stupid, it makes all encoders look bad because most people don't understand that there are big differences among encoders. You can read more about this at r3mix.net, if you want.

All that aside, I wouldn't encode test tones unless my goal was to test encoders or decoders. If you encode the test tones and then use them to test equipment and you hear flaws, you don't know if you're hearing problems with the MP3 or with the equipment. I'm a big fan of MP3, but using MP3'd test tones is a misuse of the technology.
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post #14 of 27
1/29/02 at 6:34pm
Compressing test tones is not a good idea. I haven't come across any encoder without flaws. The best one I've come across and use is Lame, which exaggerates highs and some bass frequencies.

I would provide instructions, but I don't know if the demo version can make noise/tones, let alone save. Crippleware sucks.

chych - I will make single tones for you and anyone else wanting other frequencies.

tangent - thanks for info, phew, hehe. I can hear fluctuations up there, like beeps and stuff, but I won't notice a straight tone for over 3 seconds.

EDIT: I did single tones (non modulated), and I could hear faintly 20khz-24khz.
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post #15 of 27
1/29/02 at 7:35pm
Uncompressed it is then...

I just want to test my hearing and my headphones on the very bottom and top as I have not found solid tones at those frequencies. So, how shall I get your test files?
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