Dear Hui,

One idea, not sure it will address your exact issue, but I saw the platform
running ALSA might not be powerful enough to cope will all the data.

I had the issue with multiple record sessions with different audio cards on
Rapberry Pi 3 where one record and simultaneous play worked fine, but when
adding new channels shows issues. I since then moved to a new HW (a PC in
my case) and been able to cope with 3 simultaneous channels with one play
and one record on each.

Best,
Alexandre

Le ven. 2 avr. 2021 à 14:46, Zhou, Hui via Alsa-user <
alsa-user@lists.sourceforge.net> a écrit :

> Dear community,
>
>
>
> I am currently working on streaming one input audio to multiple output
> speakers.
>
>
>
> Here is the procedures:
>
>
>
> mkfifo audio.wav
>
> arecord -D “input device” audio.wav
>
> aplay -D ”speaker1” audio.wav
>
> aplay -D “speaker2” audio.wav
>
>
>
> The problem is once I run the “aplay -D “speaker2” audio.wav”, the audio
> in two speakers becomes intermittent.
>
>
>
> But there is no problem when I only play on speaker1.
>
>
>
> Could anyone help me on this?
>
>
>
> Thanks!
>
>
>
> Best regards,
>
> Hui
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> Alsa-user@lists.sourceforge.net
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