On 10/16/2016 11:47 PM, Clemens Ladisch wrote:
> Jay Foster wrote:
>> I am using aplay version 1.1.2 on an arm based system, but cannot get it
>> to play audio properly. The sound card is a C-Media USB Audio Device.
>>
>> The sound comes out in short bursts with pauses in between. Each pause
>> is accompanied with an underrun error
>> [...]
>> This makes me think the problem I am having is with the pcm plugin that
>> does the resampling.
> Apparently, it uses too much of your CPU (whatever it is).
>
>> Is there a way to fix this?. Can I avoid the resampling somehow by
>> configuring the sound device for 22050 Hz?
> Try without dmix: "aplay -D plughw:0 test.wav".
>
>
> Regards,
> Clemens
>
Thanks. 'aplay -D plughw:0 test.wav" did not make any difference. This
is on a 400MHz armv5te processor.
cat /proc/asound/card0/stream0 shows the following for the sound card:
Playback:
Status: Stop
Interface 1
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 1 OUT (ADAPTIVE)
Rates: 48000, 44100
Capture:
Status: Stop
Interface 2
Altset 1
Format: S16_LE
Channels: 1
Endpoint: 2 IN (SYNC)
Rates: 48000, 44100
In my naivety, would I have any better luck telling aplay to select the
44100 Hz output rate and resample 220500 to 44100 instead? How would I
even do that?
Jay
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