[mythtv-users] Problems with alsa & spdif & myth
myth at dgreaves.com
Wed Apr 7 07:34:33 EDT 2004
>> some HIFI people agrues that, when you use optical the signal comming
>> from electric components inside you pc, will need to be converted to
>> a optical signal, transmitted over the vire, and converted back into
>> an electric signal in the other end. And the further argue that such
>> an conversion might be lossy and hench deteriorates the signal.
> Yeah, right. Audiofiles often state this, and usually they have no
> idea what they are talking about. Media conversion of a digital signal
> doesn't cause quality loss, quite often it's the other way.
*If* you have error detection and correction - and I don't think a PCM
Also, I've read that the (SPDIF) optical signal degrades over a
surprisingly short distance (~1m) but it is less susceptible to
interference whilst it does so.
(BTW I wouldn't be surprised to hear an audio file state it - and I'd
agree that they don't know what they're talking about
but usually it's audiophiles that state it about audio files ;) )
(sorry - couldn't resist!)
(PS I gave up being an audiophile a while back - but there is a lot more
to sound quality than engineering)
>> however IMHO I choose optical as I _THINK_ (subjective personal
>> opinion :) the noise being trnasfered from the PC is more anoying
>> than potential loss of quality due to conversion.
> Always choose optical if possible, but beware of bending optical
> cables much, because they are a bit more fragile (especially glass
> fiber, not as much the more common plastic ones).
From my dvd player optical sounds *slightly* different (not as sharp on
bass for me) IMHO.
I'd use optical from my PC if available as I think there is far more
chance of noise/hum from a PC.
<sigh> still not gt it going - it's on my todo list though...
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