>I am just working (finishing) on modular realtime effect procesor. It >is my thesis project. I would like to ask three questions: > >1. >How can I calculate the latency in ms with OSS driver?
this is alsa-devel. there is nobody here who is interested in supporting this archaic and limiting API. we would encourage you to convert your application to ALSA or ... (see below) >2. >My program do the effects on audio in realtime. >So I added recording the sound to hard disk. This is called creaping featuritis :) >This work ok. But when I play back the recorded sound (from HD), it >changes me buffer length that latency is very big. My solution to >this problem was to close device and >initalize same device one more time after playing the sound. >Is there better solution for me? Use JACK (http://jackit.sf.net) and forget about this stuff in your program, which can then focus on what it does best. Its also hard to understand what you've described, since the act of playing or capturing data does nothing to the h/w or s/w settings of the drivers, even under OSS AFAIK (and certainly not under ALSA). >3. >Is there some advices how to set the lowest latency? No 2.4-series kernel can go below about 128 frames per interrupt right now. For general advice on setting latency, see the somewhat incomplete docs at www.alsa-project.org. You might also read up on low latency issues at http://www.linuxdj.com/lad/ --p _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
