[mythtv-users] More on the Audio problem..

Gert van der Knokke gertk at xs4all.nl
Wed Apr 14 13:33:00 EDT 2004

Travis Roy wrote:

> it's not the line in.. I can adjust that all I want.. the audio going 
> IN to the line-in is to loud.

I think I've found something:

It seems like the STB cards use an extra audio chip, the TEA6300 
(=SOFAC: SOund and FAder Control)
 From the google search I found this, it won't cure the problem directly 
but may give a starting point. Mind the 'tvaudio' line..

>tea6300.o - OBSOLETE (use tvaudio instead) <------
>	The driver for the tea6300 fader chip.  If you have a stereo
>	card and the msp3400.o doesn't work, you might want to try this
>	one.  This chip is seen on most STB TV/FM cards (usually from
>	Gateway OEM sold surplus on auction sites).

I know this chip, I used it in a mp3 car project once. It has volume 
control for Left and Right and Fader control for 4 outputs and bass, 
treble, source input select  etc.

So if your TV card has this chip, you have a mixer also.. :-)
And as far as I know every BT848/878 has a mixer too, so you could have 
a total of three mixers (that's including the mixer of your default 
sound card)..

Hope you don't get too 'mixed up' by this... :-)


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