Re: Strange "knocking" while playing sound

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Dennis Borgmann wrote:
> I am working with snd_pcm_mmap_begin and snd_pcm_mmap_commit - just the
> way it is done in the "pcm.c" under the "test"-directory of the
> alsa-lib. While working with snd_pcm_writei(), those problems did not
> occur, but I want to test this using the mmap technology.

This sounds like a problem with your mmap code.

As long as you are copying samples from some buffer into the sound
card's buffer, using mmap does not give you any benefit because this is
exactly the same as snd_pcm_writei() does.


Best regards,
Clemens

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