[mythtv-users] Re: Funny problem with alsa and AC3 passthrough/rate conversion

[David Maher]

I have just fixed it. Don't ask why this worked, because I have no idea.
I changed from coaxial spdif to optical spdif output on my frontend. The optical worked properly with AC3. So I changed back to coax to verify that this was the problem. The coaxial digital output then also worked properly! I am now unable to get it to fail, I didn't touch the cable from the coax output on the pc, and I used a diffeent input on the amp for the optical output. So really I haven't physically changed anything. maybe it's an intermittent fault with the onboard sound? I have noticed that smetimes if I use aplay to test 22khz file using the mixed-digital plug, the first time I play it it plays fast, if I repeat the excercise it is OK.
weird huh?

Cheers

David M

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org]On Behalf Of David Maher
Sent: Wednesday, 28 September 2005 10:43 AM
To: Discussion about mythtv
Subject: RE: [mythtv-users] Re: Funny problem with alsa and AC3
passthrough/rate conversion


Thanks for that Nick,
Your solution would work with my dvb tuners, but unfortunately if I do that my rate conversion will no longer work and my analogue tuner will sound like mickey mouse.

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org]On Behalf Of Nick Fasano
Sent: Wednesday, 28 September 2005 8:36 AM
To: mythtv-users at mythtv.org
Subject: [mythtv-users] Re: Funny problem with alsa and AC3 passthrough
/rate conversion


> Everthing was working fine using ALSA:mixed-digital, but lately, if I
> enable AC3 passthrough in the mythfrontend, my amp outputs a horrible
> buzzing sound when it gets a dolby digital signal from myth.

I was having the same problem with my amp and dolby digital.  I  
solved it by removing my .asoundrc file and using ALSA:spdif as the  
output device.  Then go into KMix and mess with the settings until it  
works.  I discovered this through pure trial and error, but it now  
works properly and I don't mess with it.  Hope that helps.

Nick
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