WASAPI is not bit perfect

Aug 3, 2009 at 12:38 PM Post #16 of 21
All in all the Win 7 trial is pretty sweet. Trying to figure out how much it is going to cost to buy it and if I'm going to have to start from ground zero
 
Aug 3, 2009 at 2:21 PM Post #17 of 21
Quote:

Originally Posted by Ham Sandwich /img/forum/go_quote.gif
How are you verifying bit perfectness using the DacMagic? The DacMagic doesn't do HDCD so you can't base a test on it lighting up its HDCD light. The lights on the front of the DacMagic just show you the incoming sample rate, not that the incoming data is bit perfect. You could feed the data from the DacMagic to a second DAC that does do HDCD to verify bit perfectness that way.


He could be playing tracks with different sample rates and seeing if the correct corresponding indicator light is turning on. That would, at least, indicate that the drivers are not up or downsampling.
 
Aug 3, 2009 at 4:44 PM Post #18 of 21
A good way to see if your player is bit perfect is to move the volume control of the player and of the OS,changing the volume bar position should do NOT change the volume (only active or mute), foobar2k with WASAPI is NOT bit perfect, the foobar's volume control deform the sound, i notice a HUGE difference using kmplayer with reclock on wasapi, i will make a tutorial to configure it for having a top-notch video/audio player.
 
Aug 3, 2009 at 5:07 PM Post #19 of 21
anyone know the best setting for something like a havana dac with ASIO4ALL? I just installed it and turned off resampling to 48khz and left all other settings alone. Am I fine?
 
Aug 3, 2009 at 6:52 PM Post #20 of 21
Quote:

Originally Posted by Omega17TheTrue /img/forum/go_quote.gif
foobar2k with WASAPI is NOT bit perfect, the foobar's volume control deform the sound, i notice a HUGE difference using kmplayer with reclock on wasapi, i will make a tutorial


the volume attenuator in foobar works in 64FP and is in no way related to any windows volume control.

and the windows master volume control is ALWAYS hardware accelerated.
 
Aug 4, 2009 at 6:02 PM Post #21 of 21
Quote:

Originally Posted by Omega17TheTrue /img/forum/go_quote.gif
i will make a tutorial to configure it for having a top-notch video/audio player.


When?
smily_headphones1.gif


Found it! My bad
smily_headphones1.gif
 

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