Re: Audio I/O parameters

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On Sat, Jul 6, 2013 at 9:57 AM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote:
> Alan Stern wrote:
>> The first half is audio-out only.  About 2 seconds after the start, the
>> audio-in stream starts up.  After 2 URBs (2 ms) of data, everything
>> is shut down for no apparent reason -- there were no I/O errors.
>> [...]
>> I can't tell whether all these starts and stops are caused by JACK or
>> by the ALSA layer, let alone figure out the reason for them.
>
> Two URBs is the Jack buffer size, isn't it?  Does Jack complain?
>
> James, pleasy try running aplay and arecord at the same time; something
> like this:
>
> aplay   -D hw:x -t raw -c 4 -f S32_LE -r 44100 --period-size=128 --buffer-size=256 /dev/zero &
> arecord -D hw:x        -c 2 -f S32_LE -r 44100 --period-size=128 --buffer-size=256 test.wav
>

Yes - this works fine, without issue.
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