[LAU] alsaplayer error using USB Audio DAC

Paul Davis paul at linuxaudiosystems.com
Thu Aug 8 14:58:49 UTC 2013

On Thu, Aug 8, 2013 at 10:53 AM, Len Ovens <len at ovenwerks.net> wrote:

> Generally for trouble shooting I would hit the card directly:
> alsaplayer -i hw:1,0 filename.flac
> aplay --device=hw:1,0 filename.flac

aplay can't handle anything but straight PCM formats. in addition, using
hw:XXX means that the requested data format MUST match the hardware
capabilities. if you ask for a sample rate or channel count not supported
by the hardware, the device configuration will fail. this is why the
"default" device with ALSA is never hw:XXX but at minimum plughw:XXX (which
can do just about any format conversion necessary).
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