[mythtv-users] Whine on some channels - ATI TW Wonder VE w/VIA8233 Sound

[Albert Santoni]

William H. Gilmore wrote:

> Thanks in advance for any help on this problem.  I have been playing 
> around with MythTV for about a week now.  Things are going well, 
> except for audio:( 
>
> A little about the machine/OS first.  The machine is an Athlon XP 
> running at 1.8 GHz with 512 MB RAM.  I am currently using the onboard 
> audio (Via 8233) and an ATI TV Wonder VE for for capture.  The audio 
> out from the TV Wonder VE is patched to the Line In on the Via 8233.  
> The OS is RH 9.0 patched from the ATrpms per the instructions from the 
> MythTV site.  My sources is NTSC broadcast US.
>
> My biggest problem since starting with MythTV has been sound.  I have 
> gotten output from /dev/dsp by muting the Line In in the alsa mixer; 
> however, about 2/3rds of the channels have a high pitch whine.  There 
> doesn't appear to be rhyme or reason.  Channels 2 & 4 don,t.  Channels 
> 6, 7 and 9 do.  The UHF channels are mixed in whether the whine 
> appears or not.  The whine doesn't seem to be associated with signal 
> strength/picture clarity.
>
> If I play the same channels through xawtv using the Line In for audio, 
> everything works with no whine.
>
> Any tips or directions "WILL" be appreciated.
>
> Thanks,
>
> William
>
>
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>
I have an extremely similar setup... An ATI TV Wonder VE and the Via 
82xx... I also get the whine when using the tuner...
Since I have two tuners (and another soundcard - an SBLive! Value), I 
swapped the tuner audio outputs... It looks like it is infact the 
onboard audio that's making that high-pitch whine... not the ATI card 
(even though it makes the whine when using both the line-in and the 
microphone capture)...