[mythtv-users] Analog multi-channel sound, optimal configuration 0.24?
Terjesen Jens Peder
Jens.Peder.Terjesen at devoteam.com
Mon Dec 6 14:25:39 UTC 2010
Scanned for audio device, selected ALSA:surround51:CARD=Audigy2,DEV=0
Found an old PC subwoofer/loudspeaker set that I connected to the subwoofer output on the surround receiver.
speakertest with 6 channels and playing wav files produces sound on all speakers except the subwoofer. I then found out how to make speakertest generate a certain frequency tone to test with, and setting this to say 30 Hz I get sound on the subwoofer, front and rear speakers. The center speaker is probably unable to reproduce such a low frequency.
After this I tried playing some recorded TV and some DVDs with MythTV and get sound from all speakers.
When trying to play ripped CDs with Mythmusic the frontend crashed with reason "Floating point exception". In the terminal window I started the frontend from I saw a message that 2 channels of sound was an illegal value fior the sound device.
I restarted the frontend an under Setup->Music->General I found a checkbox for upconverting to 5.1 and checked this. Now the frontend does not crash when playing music but there is no sound and I get the following in the terminal:
Opening audio device surround51:CARD=Audigy2,DEV=0 ch 6(2) sr 48000 sf signed 16 bit reenc 0
mmap not available, attempting to fall back to slow writes
Anyone know how to solve this?
I use the latest MythTV packages from PackMan.
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