On Sun, Jun 8, 2008 at 5:12 AM, "Alexander Carôt" <[EMAIL PROTECTED]> wrote: > Hi all, > > can anyone give me an explanation why the blocking delay of a soundcard > appears twice using the ALSA driver ? E.g. with 48 kHz at 128 samles / frame > I understand that the capturing process requires 2,6 ms to actually fill one > block of audio samples (= blocking delay of 2,6 ms). > > However, so far I havn't understood why the devices requires another 2,6 ms > latency for the playout : If a captured buffer of 128 sampels is already > there why can't the device use each of its samples successively and play it > out directly ? > > Thanks in advance for clarification > > -- A l e x >
think in terms of mixing: 2.6mS to get the data into the system 0 second to do processing such as mixing with something on disk, adding reverb, etc. 2.6 to get the mixed audio back out - Mark ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
