[mythtv-users] Popping sound on AC3 / DTS passthrough.

[mythtv at longhome.co.uk]

Well... erm... incase I don't want the amp on. It freaks the cat out a bit.
:)

Original Message:
-----------------
From: Brad DerManouelian myth at dermanouelian.com
Date: Tue, 21 Nov 2006 07:32:19 -0800
To: mythtv-users at mythtv.org
Subject: Re: [mythtv-users] Popping sound on AC3 / DTS passthrough.


On Nov 21, 2006, at 5:35 AM, mythtv at longhome.co.uk wrote:

>
> Finally got hold of a motherboard with SPDIF out (Realtek AC'97),  
> and I've
> got the AC3 passthrough working. However, I get a strange popping  
> (sound
> like a digital signal) on the analogue out. Interestingly the same  
> thing
> happened on my old MB when I tried enabling AC3 passthrough. When  
> watching
> normal TV (ie. something without an AC3 / DTS track), there's no  
> problem. I
> get good sound through both the SPDIF and analogue out.
>
> A way around it is to mute the TV, but thats a bit of a pain. I can  
> also
> mute the PCM in the mixer, but again, this currently has to be done
> manually.
>
> Is there anything I'm missing? I guess I could always write a  
> script to
> switch the mute between the SPDIF and the PCM, and program a remote  
> button
> to run that script. Can that be done from within myth? or will I  
> have to
> write a specific action to be able to do that?
>
> Thanks
>
> Martin

Curious as to why you need to switch between digital and analog  
audio. Since you've got SPDIF working, why use the analog out at all?
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