"Audiophile Optimizer"....fish oil...? - Page 4 - diyAudio
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Old 3rd April 2014, 01:34 PM   #31
cmiu007 is offline cmiu007  Romania
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Quote:
Originally Posted by Wombat View Post
Good observation, thanks. Reminds me kind of when searching for the "J" optimizer and google suggests a thread with discussing it as "scam"
I/We may not have the absolute grasp of computer audio playback, but when i buy something I like a second opinion, even if it not fits with my personal beliefs at that time.
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Old 3rd April 2014, 02:41 PM   #32
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Quote:
Originally Posted by Julf View Post
Right. And that analysis would first have to show that more processes mean more noise, and then that the noise affects the DAC in audible ways.

If those changes were real, they would be very different for different computers and different DACs. Do we ever hear the fish oil people discussing that?
Exactly, so quit harping about skips and latency and whatnot.

Here are some possible computer related issues raised by Goto in Building an open embedded audio applicance.

The benefits of using something like a Pi or a Beaglebone is that they don't run a million housekeeping threads, don't have noisey and complex legacy architectures, make easily managed demands on power and - most importantly - output audio on an inherently low jitter I2S header. This means that you are not contending with USB jobs, or worrying about the various buffers involved in asynch usb audio, nor deriving a clock ref from a noisy SPDIF interface. And you can mount your dac and the computing board so close together that you don't have to worry so much about RFI and other electrical gremlins.


Building an open embedded audio applicance.
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Old 3rd April 2014, 03:01 PM   #33
sesebe is offline sesebe  Romania
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Good comment AudioLapDance.

This remind me something.... do you know from were come the acronim ASIO ??
(generaly speaking not you AudioLapDance)
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Old 3rd April 2014, 03:12 PM   #34
Julf is offline Julf  Europe
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Audio Stream Input/Output.
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Old 3rd April 2014, 03:16 PM   #35
Goto is offline Goto  United Kingdom
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As Julf says.

Defined a million years ago by Steinberg in Germany for low latency, realtime audio streaming from what is now called Cubase and adopted as a Pro-Audio standard in lieu of anything better. Most modern music relies on ASIO at some point in the production chain.
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Old 3rd April 2014, 03:30 PM   #36
Goto is offline Goto  United Kingdom
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It's also instructive to follow the Audiophile Optimiser/Jplay model through to completion:

All prices in Euros and some rounded down to keep it simple:

2PCs - 1000
2 WS2012 licences - 900
JPlay Licence- 99
A.O. - 100
JCAT Cat5 cable to connect PCs - 300
JCAT SATA Cable to connect hard drive on one pc- 300
JCAT USB Cable to connect to Async USB Dac - 300
JCAT USB3.0 Card to plug USB cable into - 399

So a rough cost of over 3000 euros. Makes a Raspberry Pi or Beaglebone look like the bargain of the century even before you factor in that connected direct I2S to a DAC the little arm board will produce a sound easily on a par with the above and not smell the slightest bit fishy!
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Old 4th April 2014, 12:19 AM   #37
Wungun is offline Wungun  Canada
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JCAT...some boutique PC cables...?! Now that IS fishy...
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Old 4th April 2014, 01:44 AM   #38
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Quote:
Originally Posted by Wungun View Post
JCAT...some boutique PC cables...?! Now that IS fishy...

I agree.

Please do tell everyone what difference it will make to have a special sata cable in your pc.

Unless you have an industrial 3 phase motor for a computer fan or something, there is no reason interference should mess with the digital data transferred to and from hdd's.

And really this applies to it all, the cat5 and the usb.

And if I really wanted to be picky, I could point out that you specified a cat5 cable which is more susceptible to interference than a cat6.
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Old 4th April 2014, 01:57 AM   #39
Wungun is offline Wungun  Canada
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And I'm pretty sure, HDD data is "checksumed"...for lack of a better word. Packet loss may be a better analogy. If interference is so bad that it's causing corruption, the PC recognizes this and the bits/bytes are resent.
If you have issues of this sort, all that will happen is your data thruput will slow down.
Years ago, I tested a regular IDE cable with a bundled IDE shielded and braided stainless...and it was indeed, measurably faster in disk read/writes.
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Old 4th April 2014, 10:48 AM   #40
Julf is offline Julf  Europe
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Originally Posted by Wungun View Post
Years ago, I tested a regular IDE cable with a bundled IDE shielded and braided stainless...and it was indeed, measurably faster in disk read/writes.
Really? A friend of mine works in R&D for a computer chip maker. They did pretty extensive tests, and would have loved to find such an easy way to make computers faster...
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