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Old 17th April 2011, 08:51 PM   #141
phofman is offline phofman  Czech Republic
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Join Date: Apr 2005
Location: Pilsen
Quote:
Originally Posted by npetralias View Post
You can compare a flac with a wav playback and see for yourself, it's very interesting...

Track ripped from a decent telarc CD, ubuntu, played by sox (alias play) directly to the sound card (equvalent of windows asio). Track converted to flac with sox (size dropped to half).

Code:
AUDIODEV=plughw:0 play -V track.wav
Sox took about 0.5% of ancient AMD Sempron 2600 running at 1800MHz.

Code:
AUDIODEV=plughw:0 play -V track.flac
Sox took about 1% of the CPU.

One PC: Infrasonic Quartet to headphones AKM K55

Another PC: Audiotrak Prodigy 192 - 6-channels input of HK AVR 430 modded for front speakers bi-amping - bi-amped KEF Q7

My gear is definitely no highend, but I really do not hear any difference
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Old 17th April 2011, 09:57 PM   #142
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Please try it on windows, with foobar or something else...
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Old 18th April 2011, 08:18 AM   #143
phofman is offline phofman  Czech Republic
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Quote:
Originally Posted by npetralias View Post
Please try it on windows, with foobar or something else...
I am sorry I have no windows on those machines. And my WinXP notebook cannot use my home audio setup.

Still I do not understand why the OS should make any difference. I would expect foobar uses the same libflac as sox does, i.e. it produces identical samples to wavs.
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Old 18th April 2011, 10:07 AM   #144
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Did some testing yesterday with the latest pureplayer and my setup with foobar.

I was unable to notice any difference in sound as before.

Waiting for the wasapi version. Will be interesting and hopefully it will sound even better.
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Old 19th April 2011, 12:12 AM   #145
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Quote:
Originally Posted by phofman View Post
it produces identical samples to wavs.
That observation will win you no friends.
__________________
Silence is so accurate.
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Old 19th April 2011, 07:12 AM   #146
phofman is offline phofman  Czech Republic
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Join Date: Apr 2005
Location: Pilsen
Quote:
Originally Posted by scott wurcer View Post
That observation will win you no friends.
:-) I think I can live with it :-)

People generally agree that the only factor causing the difference can be different level of noise. Timing is controlled by the card and samples are identical. 44.1/16 flac decoding to wav takes less than 1% of my ancient CPU. There is no reason foobar should behave differently. If it does, it is a bug, not feature.

On my idle ubuntu sox playing flac never got to the top of processes listed by their one-second-average CPU consumption (command "top"). Browser (no flash running) consumed more, just as Xorg (the graphical server), the VGA card interrupt service thread of the kernel - all these consumed significantly more CPU (i.e. single % figures each). I do not believe the fraction of % CPU load the flac decoding requires can have any effect on the level of noise on modern desktops running tons of processes. Plus it is highly likely the list of processes available through Windows XP/7 API is far from being complete.
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Old 19th April 2011, 07:29 AM   #147
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Of course the flac and wav samples are the same, we all agree, that's the meaning of lossless format...
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Old 19th April 2011, 01:27 PM   #148
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Join Date: Mar 2011
Download v 2.5 by right click->Save File As here (7.7MB)

Latest release: 19/04/2011

New features:

-Wasapi support (only for Windows 7, Vista)

Installation:
Unzip folder pureplayer to c:
Run PurePlayer.exe

Existing installation:
Replace c:\pureplayer folder


Microsoft .NET Framework 4 is required, available at:

Download details: Microsoft .NET Framework 4 (Web Installer)
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Old 19th April 2011, 01:52 PM   #149
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Thanks alot for your effort. Sounds good but I got some "glitches" in the sound. Almost like old LP's - Have not checked if there are some settings around.
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Old 19th April 2011, 01:56 PM   #150
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Thanks! (what kind of pc-windows?)

I have done just a few tests but so am waiting feedback from you.
Anyone else with glitches?

Last edited by npetralias; 19th April 2011 at 02:00 PM.
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