[ivtv-users] CX18 audio interference

[faginbagin]

Hi Andy,

> I have a patch for testing at:
> 
> http://linuxtv.org/hg/~awalls/cx18-av-core/
> http://linuxtv.org/hg/~awalls/cx18-av-core/rev/9beb99150ab1
> 
> 
> Helen and ivtv-devel list readers,
> 
> This patch needs some tests run:
> 
> 1. Check that sound is better with the NTSC tuner
> 2. Check that S-Video and/or Composite in with NTSC didn't break
> 3. Check that switching back to the tuner, sound is still OK.
> 4. Check that PAL & SECAM still work on SVideo and/or Composite
> 5. Check that PAL and/or SECAM tuner sound is OK.
> 
> I'll try and test what I can during the course of this week.  I have
> high confidence that nothing is working worse than before :), but I
> can't check OTA PAL or SECAM (Maybe someone with a Compro H900 can
> check?).
> 
> 
> Since this bug was inhereted from the cx25840 module, I'm wondering if
> this is the cause of the PVR-150 tinny audio.  If I can reproduce the
> tinny audio with my PVR-150MCE, I'll try to experiment with having the
> SIF gain controlled by the audio decoder (the correct thing todo) versus
> the video decoder (the wrong thing todo) of the CX2584x.  This change
> can, with some difficulty, be ported to the cx25840 module, if that
> fixes the tinny audio.
> 
> Regards,
> Andy

I downloaded the cx18-av-core repo and tested 1-3. Sound was good on a 
couple of the previously bad channels, 29 & 41. Switching to input 1, 
sound was still good, switching back to input 0, sound was still good on 
channels 41 & 29.

Let me know if there's more I should do. I'll keep this version 
installed & make sure all is still well with mythtv.

Helen