[alsa-devel] capturing data from the microphone

[Raymond Yau]

which device are you using ?  ( pulseaudio , dmix or default device defined
in /usr/share/alsa/cards/*.conf )

post output of

arecord -v -c 1 -t wav -f S16_LE -r 8000 -d 10 input.wav

2010/1/5 Marc Garnier <marc.garnier at heig-vd.ch>

> Hi,
>
> I have the same kind of problem. I try to capture PCM stream thanks to
> areacord :
> # arecord -c 1 -t wav -f S16_LE -r 8000 -d 10 input.wav
>
> 30 seconds later I have the folowing message :
> # arecord: pcm_read:1629: read error: Input/output error
>
> I can observe the PCM stream on an oscilloscope but no interrupt are
> catched by the system  (AIC ss0 counter remains at zero ) :
> # cat /proc/interrupts
>           CPU0
>  1:     275059         AIC  at91_tick, rtc0, ttyS0
>  7:        179         AIC  ttyS2
>  9:         11         AIC  mmc0
>  13:          0         AIC  atmel_spi.1
>  14:          0         AIC  ssc0
>  82:          1        GPIO  alerte
> 107:       9464        GPIO  eth0
>
> Any idea?
>
>
>