[mythtv-users] MythTV and SBLive (Echo Problems)

[Bob K Mertz]

Hello,

I am new to the list. Hoping to find the solution to my problem here.  I
just installed MythTV on a Mandrake 10.2 Limited Edition install.  I am
running 1GB of RAM, a Pentium 4 2.0Ghz CPU and a Avermedia TV Tuner card
(bt878) with a external loop cable into my Sound Blaster Live 5.1 Value
card.  Configuration is using SAMBA to send the storage files to my file
server.  Buffering is stored on the local drive on it's own partition.

 

The problem I am having is with the audio.  On the initial install MythTV
was working fine but I had a weird echo issue.  The audio was in sync but
there was a faint echo a second or two behind it.  While watching TV, I
rewound the feed and played back a few minuets and the echo was still there,
so the audio along with the echo seems to be captured in the buffer.  I
started scouring the web and I found a post to another list that indicated
turning down the AC97 option solved this person's problem.  It got rid of
the echo but I ended up with out of sync audio.  More into my investigation
I am finding out that in order to get any audio, the following "devices"
must be turned up: PCM, WAVE, AC97 Capture, and EMU10K1 PCM Send.  If any of
these get turned down, I lose all audio.  My line in is of course set for
CAPTUR and is muted.

 

I know that the SBLive card uses two chips (both AC97 and EMU10K1) and I'm
sure the issue is somehow related to this.  I saw
http://mythtv.org/pipermail/mythtv-dev/2002-December/003308.html which
offers a possible solution but I was never able to find if this person ever
posted his asound.state file but I wasn't able to find it.

 

My ultimate goal is to use the SPDIF output to send it to my Dolby Digital
receiver but right now I would be happy to just get audio working :-)
Thanks in advance for any help anyone has.

 

--

Bob K Mertz

 

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