>
> On Mon, Mar 10, 2014 at 9:51 AM, Gianfranco Ceccolini
> <[email protected]> wrote:
>
> Paul. I’m really sorry for my lack of comprehension, but I still don’t get
> it. Is there a relation between the ALSA period with JACK’s period?
>
> they are identical.
How can that be? JACK says -p 128 samples and ALSA says 2 on the PC and 16 on
the BBB
>
> note: other audio APIs call this a "buffer". some, like ASIO, force a double
> "buffered" model where the total size of the hardware memory area used for
> transfers (what ALSA calls the "hardware buffer") is always twice the "buffer
> size".
>
> ALSA offers control over *both* the "period" (between interrupts) and the
> total hardware buffer size. This is unusual among audio APIs, except that
> JACK follows the same convention in its ALSA backend. You can specify the
> period size (-p) and the number of "periods" that make up the hardware buffer.
So if I use -p128 and -n2 it means the kernel will buffer 256 samples per
interrupt, is it?
>
Thanks for the patience
Gian
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