[Alsa-user] Read and write with different output sizes

[Elias K. <eko...@up...>]

Hello all,

I am posting a question I previously posted in alsa-devel, but did not get the expected feedback.

I am using alsa drivers in an OMAP3530 processor to do some audio processing. I am implementing a typical speech enhancement algorithm with overlap-add. I use a window length of 2048 samples and an overlap of 1024 samples. That means I need to use an input (capture) buffer of 2048 and an output (playback) buffer of 1024. Can this be configured in alsa? Can the playback and capture streams have different buffer sizes, but operate at the same sample rate (e.g. 44100Hz)?

Best regards,
Elias