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Altmann Tera Player - Page 51  

post #751 of 1958

You are welcome to your opinion. But this is not a mass produced product, those things would add cost. Why use the worlds resources on a paper manual when it's online and really easy to remember once you've tried using the Tera.

 

If the Tera doesnt fit your needs then dont get it. the truth is it would probably cost a lot more to sound the way it does and have a screen. I honestly hate the idea of a screen on the Tera Player. The genus of this device is it's coded in assembly. That means he's coded only 1 step removed from binary values to handle everything. He had to make it as efficient as possible so it would even work in such a small device and adding a screen would mean adding more code and probably stepping away from something that enables the Tera Player to perform so well. Tradeoffs for everything though, but to me it's great just popping in a card and instantly getting to the music

Quote:
Originally Posted by i_djoel2000 View Post

interconnects, pouch, manual, rubber feet, etc.

 

i'm not saying that i'm willing to pay more for the extra goodies. it's the reciprocal, tera player should have been priced way lower without the extra goodies. i admit this player is really impressive, but what's inside the box does not really justify the price he's charging.

 

To tell you the truth, i was quite in shock when my friend showed me the box of tera player.. it's just too horrifying to imagine this thing costs $1100. put a screen on it, maintain the same sound quality, then i can safely say this thing worth the $1100 price tag. i would not even hesitate to buy that player in an instance.. but as for this current product? the price is just insane..

post #752 of 1958

Putting this into 2012 HI-FI reality, a player with built in amplifier that is top of it's class for less than £1k! - it's a bargain.

 

if Naim made it, it would be £2k

if Linn made it, it would be £3k

if Meridian made it................................

 

I am not saying it's poor value compared to an X3 or Studio-V , it probably is, or will be,

but if it is as good as people say, it is really not expensive, especially compared to a 

£5k MC cartridge, or a Nordost Power cable, or day I say it a £1k pair of Headphones.

 

Making anything made these days in Western Europe is a very expensive business, 

it's those companies who move to China, but still charge the same prices, are the ones who should be 

the target.

post #753 of 1958
Quote:
Originally Posted by skamp View Post


33% more. If you're going to compare to 24/48, you need that to be 100%.
(16 * 2 * 96000) * 100 / (24 * 2 * 48000) ~= 133.333%
Cropping the lower 8 bits is just a matter of bit shifting (n >> 8). It's extremely fast. The reason you wanna do it ahead of time, is to do it better than that (with dithering).

swap for the smaller as denominator and it will be my %. 33% more or 25% less. Fun with fractions.wink_face.gif Point was that it's clearly a higher bit rate.bigsmile_face.gif

 

Charles recommended to not use dither.confused_face(1).gif Never considered if that would be OK as it's not really a level change per se. I always use dither and have never changed the bit depth before the sample rate before so haven't listened specifically if dither is needed in that case. I can clearly hear it's necessary on frequency conversions.

post #754 of 1958
Quote:
Originally Posted by goodvibes View Post

 

Charles recommended to not use dither.confused_face(1).gif

 

Did he explain why not?

post #755 of 1958
Quote:
Originally Posted by flkin View Post

Charles the creator of TP recommends XLD for the Mac format. I have not had a single problem with any file low or hi res to date. All files from HDTracks work fine. Super easy to use. For standard 16 bit files and iTunes, I simply drag the entire folder of the CD from the itunes database onto XLD and the conversion is complete with the correct folder structure required by TP.
He also recommends to keep the sample rate untouched but reduce the bit size to 16 if originally higher. Although TP can directly play 24 bit files there may be issues with the SDcard speed, space and drains more battery unnecessarily having to load the 24 bits from the card before dumping it anyway. My understanding is Charles recommends to drop the bottom 8 bits as done by XLD when converting from 24 to 16 bits since those bits are not audible and not to dither from 24 to 16 and loose audible bits.
This is what the creator of the Tera Player suggests. Feel free to disagree. :-)

 

Quote:
Originally Posted by Sapientiam View Post

 

Did he explain why not?

Read the above. That's where I got it from.

post #756 of 1958

Ah cool so the answer's no then, thanks.

post #757 of 1958
Quote:
Originally Posted by goodvibes View Post

Read the above. That's where I got it from.

To be more accurate, I ask if there was a way to keep all the 24bit data or compress it to 16 bits. I didn't use the word dither until I read it here. Meant the same thing I hope. His suggestion was to convert the data to 16bits using software like itunes or XLD. Said he didn't know what technique was used in the process but approved the sound quality of the final product. But he guessed the bottom bits were simply truncated. He didn't specifically say not to dither. Apparently to another user, he mentions that by truncating the bottom bits you wouldn't loose significant audible data.

Hope this is clearer. No confusion intended.
post #758 of 1958
Quote:

Oh a good read. Thanks. Reinforces my long held belief from hearing experience that 16/44.1 red book files are not any worse than hires files. Unless its better mastered.

As for the Tera Player, I don't understand why I didn't do the test suggested in the article before. So simple to perform and will clarify (to me at least) once and for all if I can hear the difference between standard and hires files. Simply downsample from 192kHz to 48kHz, upsample it back to 192kHz, and then compare it to the original 192kHz sample in an ABX test.

This will determine if I need to keep large 192kHz files on the TP or just stick with 44.1
post #759 of 1958
Quote:
Originally Posted by flkin View Post

Simply downsample from 192kHz to 48kHz, upsample it back to 192kHz, and then compare it to the original 192kHz sample in an ABX test.

Provided that your sound card can do 192 kHz smily_headphones1.gif Also mind that you need to set a number of trials beforehand (12 is good), and in order to pass the test conclusively you need a p value that's less than 0.05 (or 5%). Anything higher will prove nothing.

The beauty of ABX tests is that you can test theories of audibility even if you don't fully understand them!
Edited by skamp - 12/8/12 at 12:38am
post #760 of 1958

My results differ but I don't use SACD or PCs as source. Some of this will be limited by kit used. Always preferred analog to CD as well but these things only matter when all your ducks are in a row. I think that for most computer USB DAC setups, the difference will be marginal and understand why some feel it nonsense.

  I can also understand why it could be considered overkill for portable use. In fact, I tend to lean that way and don't tend to see lack of HiDef as a portable's greatest weakness. Not that HiDef may not sound better on a particular player but that perhaps bit rate may not be the most significant performance bottleneck in portables. I haven't been on the more bits is necessarily better bandwagon and didn't care for 192 until very recently when Nagra updated the A2D FW in the VI. I still don't prefer 192 over 96 on things we didn't encode but that would be more equipment related than format related. I've found 192 downloads to be quite variable overall frown.gif so I would never question what someone else hears. In fact, I've always felt it extremely poor form to question what another does or does not hear. That much is now being encoded by iffy 192 A2D setups and then downconverted doesn't help as well but these things tend to improve over time. If anybody in Chicago wants to do some compares, PM me. It's always fun to listen to some tunes and compare things. It gets interesting when you compare digital dubs to their analog source.


Edited by goodvibes - 12/8/12 at 3:36am
post #761 of 1958
If my MacBook is able to play the original 192kHz file will this mean that it can handle 192? I plan to simply use XLD to do the conversions.

I'm familiar with ABX tests, do it all the time with hobbyist friends to confirm our subjective listening preferences of new HiFi stuff like cables. Always to 6%, 2 or 3 times if time permits. Only single blind but we're poker players 😄 Great fun trying to out listen each other.
post #762 of 1958

Depends. Handle is different than use. Don't know what the internal DAC is capable of. Tos out is limited to 96. Many USB or 1394 interfaces can do 192. I always preferred things like the Weiss or cheaper TC Konnekt firewire type, especialy with a linear power supply. TC came up with DICE II/JET  for extremely low jitter via a firewire connection and it's quite good.

 

Skamp, I know we disagree about HiDef but you may like this JET PLL paper. I've never been a fan of ASRCs as jitter control.

 

 http://www.tcelectronic.com/media/frandsen_travis_2006_clean_clocks_tc(1).pdf


Edited by goodvibes - 12/8/12 at 7:35am
post #763 of 1958

My Tera Player should arrive soon.I am wonderfing how many guys here own one?

Charles said that the numbering is inside on the main bord.Will the Tera Player work with the cheep no brand SD card?

post #764 of 1958
Quote:
Originally Posted by musicday View Post

My Tera Player should arrive soon.I am wonderfing how many guys here own one?
Charles said that the numbering is inside on the main bord.Will the Tera Player work with the cheep no brand SD card?

Do not open the case, as Charles uses security-head screws and opening the case will void your 5-year warranty. My Tera works fine on inexpensive SD cards but they must be SDHC. Plain SD will not work. If you format them, it must be to FAT32.
post #765 of 1958

Just got my Tera Player today and like many others said before....WOW!!!

Never been so happy, nor ever heard all those micro detailes, the music is so rich, clear,neautral, black right in your face.I was listening to Ludwig Van Beethoven from a micro sd 4 gb with a Sandisk adaptor with my Westone 4R and the sound is amazing..Actually is scary, life like...very impressed and amazed by what Mr.Charles have done.

I don't regret at all selling my DX100 and my W3000ANV.

I went and tried the Koss Porta in a shop and i was really impressed with their sound.Perfect match with the Tera Player.Charles mentioned that it will burn in and the sound will imporove...

Can a great sound become even greater? For all those who haven't heard the Tera Player, please go and try one...You need to hear it to belive it..

And thanks to some of the guys here, the Foobar2000 is perfect to convert CD's to WAV.Take around 3 minutes on my laptop for a whole CD.

I thought that W4R+S3 =perfect, but i belive to myself that the SQ is only 10% of what the Tera Can do.

-Question: why spend money on AK100 when you can save for a Tera?beyersmile.png

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