[alsa-devel] alsa compliance test: H340 (USB audio) playback / capture rate asymmetry bug?

Clemens Ladisch clemens at ladisch.de
Thu Sep 12 22:01:10 CEST 2019


Hin-Tak Leung wrote:
> # lsusb -v -d 046d:0a38
>
> bEndpointAddress 0x01 EP 1 OUT
> bmAttributes 5
> Transfer Type Isochronous
> Synch Type Asynchronous

This device regularly reports to the host how fast it wants to receive samples.
If that is not the same speed at which recorded samples are sent, then that is
entirely the fault of the device's firmware.


Regards,
Clemens


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