[mythtv-users] Problems with alsa & spdif & myth

Benjamin Watkins ben-list at constant-technologies.com
Wed Apr 7 12:27:22 EDT 2004


At 11:51 AM 4/7/2004 , you wrote:
>I'm completely baffled.  Where is the noise/hum coming from?  This is a 
>completely digital signal.  The amplifier does not touch the signal until 
>it is decoded.  Any 'static', or 'noise' introduced by using a wire 
>instead of fiber optics would *never* be heard by the amplifier because it 
>is not an audio input.  The 1's and 0's either get there, or don't.  Sharp 
>bass?  Not possible.

I believe the hum would be caused by a ground loop, not interference of the 
digital signal (which should show no degradation of this type in any 
case).  Optical cable electrically isolates the devices, so there is no 
ground loop.

I can not speak to the "Sharp Bass" observation.

-Ben : )



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