[alsa-devel] Sound card init

[Jean Manuel JACINTO]

Hello alsa team.
I'm not sure to write at the right place, so please apologize if i'm being off-topic.
I'm using a supposedly  standard-compliant soundcard with alsa on linux, and playback is going very fine without issue on the 4 channels.

However, inputs are not behaving well. Captured sound is 'choppy' (like small high pitched discontinuous chunks).
After many tries i figured a workaround : if i plug the card to a windows pc, even without using it, it will then capture perfectly from the linux station.

So i suppose the windows driver is doing some initialization. Possibly setting a latency value (i'm supposing that because this value is selectable from the driver tray icon)

As some experts might be on this list, i wanted to ask if you know a way to 'sniff' how the win driver is doing the init. So id be able to replay it with alsactl or custom code ?

Thanks, and sorry again if i'm asking in the wrong place.

Regards,
JM

Le 11 décembre 2018 10:58:37 GMT+01:00, Daniel Baluta <daniel.baluta at gmail.com> a écrit :
>On Tue, Dec 11, 2018 at 3:09 AM Mark Brown <broonie at kernel.org> wrote:
>>
>> On Mon, Dec 10, 2018 at 09:21:15AM +0000, Cosmin Samoila wrote:
>> > Add Digital Audio Interface driver that convers PDM bitstream to
>PCM
>> > format.
>>
>> I'm missing patch 1/2 here - what's going on with dependencies?
>
>Hmm, that's strange. I got patch 1/2 and it also appears to be on
>the mailing list archive.
>
>http://mailman.alsa-project.org/pipermail/alsa-devel/2018-December/142765.html
>
>Maybe it got filtered somehow to another directory inside your email
>account?
>
>thanks,
>Daniel.
>_______________________________________________
>Alsa-devel mailing list
>Alsa-devel at alsa-project.org
>http://mailman.alsa-project.org/mailman/listinfo/alsa-devel