Subject: Re: [linux-audio-dev] Re: Low Latency Kernel Combos
From: Josh Green (jgreen_AT_users.sourceforge.net)
Date: Thu Jun 21 2001 - 07:49:56 EEST
> Jens M Andreasen wrote:
>
> Josh!
>
> It looks to me as if you use 2x128 buffers and not 3x128 like Benno
> suggested. This is good news!
>
Huh? No actually it is 3x128 that I tried.
>
> Anybody here dare try 3x64? >;->
>
Nope. Haven't tried that :) I guess the 3x128 means there are 3
fragments of 128 bytes (64 samples for 16 bit mono data)? So this would
mean that total delay of sound buffer at 44.1khz would be (3 * 64) /
44100 = 4.35 ms. Whereas the maximum allowed latency to insure no
underruns would be 64 / 44100 = 1.45 ms. Please correct me if I'm wrong.
It would seem like having 2 fragments versus 3 would be just the same
for the hardware, and you would get the lower audio delay. I'd like to
try it with 2 fragments to see what happens.
Anybody writing a web form driven database for latencytest results?
Lates..
Josh Green
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