Audiophile sound on Linux - AVS Forum
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post #1 of 7 Old 06-11-2013, 05:19 AM - Thread Starter
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Thread dedicated to maximizing audio quality on Linux, particularly 2 channel music, but also sound quality issues in general, stereo or multichannel.

To get started here are some useful and relevant links-

Recommended players:

Music Player Daemon (mpd) https://launchpad.net/~gmpc-trunk/+archive/mpd-trunk?field.series_filter=raring
Gnome Music Player (GMPC) (GUI for mpd) https://launchpad.net/~gmpc-trunk/+archive/gmpc-stable
mplayer2 http://www.mplayer2.org/
DeaDBeef http://deadbeef.sourceforge.net/
Gmusicbrowser https://launchpad.net/~shimmerproject/+archive/ppa
Guayadeque http://sourceforge.net/projects/guayadeque/
Quod Libet https://code.google.com/p/quodlibet/


Recommended players for audiophile use must at minimum support bit perfect audio playback/output from the Linux PC, plus support gapless playback.

GMPC Installation/review
http://www.webupd8.org/2009/11/gnome-music-player-client-gmpc-mpd-just.html

MPD installation/review
http://www.webupd8.org/2009/10/mpd-sonata-powerful-audio-player-for.html

Lots more front ends/GUI's/remote clients and remote control apps for MPD
http://mpd.wikia.com/wiki/Clients

Linux music player apps and settings to achieve bit perfect output discussion
http://www.head-fi.org/t/561961/bit-perfect-audio-from-linux
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post #2 of 7 Old 06-11-2013, 12:18 PM
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New version of FLAC is now available! So download it if it's available in your updates or grab the source or user-compiled install package from a third-party site.
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post #3 of 7 Old 06-11-2013, 07:45 PM - Thread Starter
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post #4 of 7 Old 09-10-2013, 01:52 AM
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Great resource!

I have 2 questions, should I create a new post?

I've been looking at using Linux for audio to my Audiolab through USB and I was wondering about 2 things before diving in.
1) What are the min computer hardware requirements
2) My library is mostly ALAC, which is no longer a proprietary format. Can I play these back?

I was considering, http://www.ap-linux.com but according to some on computeraudiophile.com, they appear to suggest linux doesn't have the under-the-hood nots and bolts for audiophile sound.
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post #5 of 7 Old 09-12-2013, 03:31 PM
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Quote:
Originally Posted by a santos View Post

I was considering, http://www.ap-linux.com but according to some on computeraudiophile.com, they appear to suggest linux doesn't have the under-the-hood nots and bolts for audiophile sound.
That's total B.S.. Once a player sends bit perfect audio to the DAC it can't possibly get any better or worse.

Linux players are able to do this without any tweaking, so anyone who says that Linux audio sounds worse doesn't know what he is saying.

Enviado de meu Nexus 4 usando Tapatalk 4
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post #6 of 7 Old 09-14-2013, 05:22 AM - Thread Starter
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Quote:
Originally Posted by a santos View Post

Great resource!



I was considering, http://www.ap-linux.com but according to some on computeraudiophile.com, they appear to suggest linux doesn't have the under-the-hood nots and bolts for audiophile sound.

Thanks for the complement, but...

Ridiculous assertion.

http://bryston.com/products/digital_audio/BDP-2.html
Quote:
Employing a modified Linux OS optimized to provide the highest quality audio performance,

No, the fact Bryston uses a "modified" Linux doesn't mean an off the shelf distro like Xubuntu or Ubuntu Studio wouldn't/couldn't produce the exact same bitstream and jitter magnitude from it's SPDIF, HDMI, or USB outputs.

The volume of illogic and snake oilsmanship in the audiophile hobby is staggering, second only to finance/investment types.

As the prior post responded, once the claim is made that bit perfect output is achieved (again, through an SPDIF or USB output from any device, PC or custom), by definition there is NO difference in the datastream. For SPDIF outputs, there *may* be differences in jitter magnitude, which may or may not matter depending on the receiving SPDIF device (DAC, processor,, etc):

http://www.diyaudio.com/forums/digital-source/85283-s-pdif-jitter-myth-reality.html

http://www.tek.com/application/jitter-measurement-and-timing-analysis?utm_source=google&utm_medium=cpc&utm_term=jitter&utm_campaign=Oscilloscopes_-_Applications_-_NA&utm_content=cov134p123136g-c

http://www.audiocraftersguild.com/AandE/npt.on.jitter2.htm

http://ethanwiner.com/audibility.html

http://www.hydrogenaudio.org/forums/index.php?showtopic=87802
Quote:
there have been properly conducted listening tests to determine the audibility of jitter. Two obvious examples are:

Benjamin & Gannon.
Theoretical and audible effects of jitter on digital audio quality.
105th AES Convention, 1998
Jitter added to digital signal between transport and DAC with a hardware device.
Conclusions: uncorrelated jitter inaudible below 10nS rms on pure tones;
uncorrelated jitter inaudible below 20nS rms on music signal

Ashihara, Kiryu et al.
Detection threshold for distortions due to jitter on digital audio.
Acoust. Sci. & Tech. 26, 1 (2005)
Jitter simulated in the digital domain.
Conclusions: uncorrelated jitter inaudible below 250nS on music signal.

Notice how *massive* are the levels of jitter that proved to be inaudible, and compare that to jitter levels in modern systems (typically below 1nS, good ones below 100pS). Jitter simply isn't the bogeyman it's made out to be.

So what- get a better *receiving* device or use the USB out from your linux PC to a USB DAC.

Another rebuttal is the fact that commercial OS's like OSX (Mac) and Windows must apply DRM schemes to audio and video paths, tainting the audio stream. By definition, FOSS OS's don't, so you can be guaranteed of an untainted audio bitstream *Only* from FOSS OS's.

Yes, we all know about Windows kernel streaming and ASIO and third party add ons for Mac OSX iTunes that claim to leave the audio datastream unmolested & "bit perfect". But why do you want to use third party *proprietary* (i.e. non free-speech) workarounds and hacks to give you back what you have rights to in the FIRST PLACE!? Plus, audiophiles are OCD by definition, and you would *never* know if a commercial OS (Win/Mac) is tainting the audio stream for sure, third party plug-ins/add-ons/drivers or not. With common FOSS OS's (Ubuntu and compatible derivatives, Fedora and derivatives, Arch and derivatives, etc), you *know* the audio bits are untainted.
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post #7 of 7 Old 07-13-2014, 01:34 AM
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I think you should add JRiver media center to this list...

Currently only does audio on Linux for now... but it kicks a$$...
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