SV: [mythtv-users] Re:Turtle Beach Santa Cruz sound distortion withALSA

[Peter Wallin]

The message you're quoting only seems to mention problems with playback. I only (sometimes) get distortion when recording audio, playback is flawless. 
 
But maybe they are related problems. If so, that's too bad. Anyone have a suggestion for a cheap sound card with digital out that will work 100 % with mythtv?
 
________________________________

Från:	 Babak Masalehdan [mailto:babak at masimex.com]	
Skickat:	 fr 2003-06-27 07:25	
Till:	 Discussion about mythtv	
Ämne:	 Re: [mythtv-users] Re:Turtle Beach Santa Cruz sound distortion withALSA	
 	

The Iraqi Information Minister today denied that on Friday 27 June 2003 00:52,
Mark Chou wrote:
> I had a variation of the problem you're describing, TB Santa Cruz w/
> alsa 9.0rc8.  Occasionally for no apparent reason, the audio shifts to
> what I describe "higher frequency harmonics."  There is suddenly high
> pitched noise/buzz that accompanies the audio, as if there was a "loose
> screw" on top of a sub woofer.
>
> I don't know what I did, but it no longer happens as much as it used to.
>   In fact, I haven't noticed it in a while.  Maybe it was a later
> version of mythtv cvs, I don't know.  All I know is that it hasn't
> happened for me in the last 3 wks or so.

This is a known problem with the Cirrus cs4630 DSP, and sorry to say it will
never be fixed.  I ran into this myself a while back on my primary computer,
and I dug up this message on LKML:
http://www.cs.helsinki.fi/linux/linux-kernel/2001-16/0289.html
I then emailed the writer, cirrus engineer Tom Woller, about it about a year
ago to see if they had figured it out, and this was his reply to me:

"Woller, Thomas" <twoller at crystal.cirrus.com>
> sorry. no fix for it. :(  since the only DSP engineer that could
> have fixed the problem is no longer here, i don't think that
> it'll ever get fixed. 
> tom

It stopped happening for me after a while (I have no idea why), and I'm now
using nforce2 audio.  The only workaround was to manually unload and reload
the kernel module, which reset it, but it was just as likely to go scratchy
again after you did that.

Babak

_______________________________________________
mythtv-users mailing list
mythtv-users at snowman.net
http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users


-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/ms-tnef
Size: 5964 bytes
Desc: not available
Url : http://lists.snowman.net/pipermail/mythtv-users/attachments/20030627/300fc2bc/attachment.bin