Hmmm, I think if I'd disabled the dmix plugin the rate conversion would have stopped working. Anyway, I didn't change any settings, or even reboot the frontend. On the Alsa.opensrc.org homepage there are a couple of good articles on dmix etc that you may find useful. http://alsa.opensrc.org/DigitalOut http://alsa.opensrc.org/DmixPlugin I used the dmix article and stepped through the configuration examples. I now have a better understanding of what .asoundrc is doing. This is all a bit off topic, sorry.
Cheers David M -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of mrmagoo Sent: Wednesday, 28 September 2005 12:20 PM To: Discussion about mythtv Subject: Re: [mythtv-users] Re: Funny problem with alsa and AC3passthrough/rate conversion I was experimenting with the dmix plugin and didn't realise what I was doing and played an mp3 after I had started playing a DD5.1 recording and got a sound I'd describe similar to that. It looks like the settings you were messing with would have enabled/disabled the dmix plugin particularly, could this have been the case? I don't understand how ALSA works and why it can't do conversion by default, and I'm pretty sure I was doing something wrong but I could never get dmix to work the way I wanted it to. On 9/27/05, David Maher <[EMAIL PROTECTED]> wrote: > 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: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Nick Fasano > Sent: Wednesday, 28 September 2005 8:36 AM > To: [email protected] > 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 > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
