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 > _______________________________________________ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user >
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