[alsa-devel] [snd-bt87x] Prolink PixelView PlayTV

[Trent Piepho]

On Mon, 28 Apr 2008, Takashi Iwai wrote:
> At Mon, 28 Apr 2008 02:46:34 +0200,
> Jan Anders wrote:
> >
> > Hi,
> >
> > I'd like to report a working device:
> >
> >  Name: Prolink PixelView PlayTV
> >  Kernel: 2.6.23
> >  ID: 0x878-0x00:0x00
> >  Digital Rate: 128000 (I think)
> >
> > I can record mono fine with arecord:
> >
> >  % arecord -D hw:2,1 -f S16_LE -t wav test.wav
> >  Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
> >  Warning: rate is not accurate (requested = 8000Hz, got = 119466Hz)
>
> The rate the driver suggested looks scary.  Something must be broken
> more deeply..

It's normal for the chip.  It does 8-bit mono at very high sample rates to
allow for software decoding of stereo TV audio.  I think 119466 Hz is the
lowest rate it supports, which is why is choose it when 8000 Hz was
requested.