[ecasound] Re: ecasound latency (fwd)

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Subject: [ecasound] Re: ecasound latency (fwd)
From: Kai Vehmanen (kaiv@wakkanet.fi)
Date: Thu Jan 20 2000 - 11:34:30 EET

> I've tried ecasound for realtime effectprocessing, but even when I only
> record and directly play a sound, ecasound has some latency. My CPU has
> nothing to do. Do you know what I can do, to make sure I've a very small

Latency depends on buffersize (-b:samples). By default, a buffer of
1024 samples is used. With sampling rate of 44100samples/seconds, this
results in 23msec latency (+sound card buffering). This is definitely
too much. For my own realtime processing needs, I usually use -b:64
(~1.5ms) or -b:128 (~2.9ms). These are almost inaudible. 

-- 
Kai Vehmanen <kaiv@wakkanet.fi> -------- CS, University of Turku, Finland
 . http://www.wakkanet.fi/ecasound/ - linux multitrack audio processing
 . http://www.wakkanet.fi/sculpscape/ - ambient-idm-rock-... mp3/ra/wav

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