Ryan Cruz
Stunt Coordinator
- Joined
- Apr 2, 2002
- Messages
- 139
Is one better for music and the other for movies?
OK. I'm confused. I have a Pioneer Elite CLD-59 with coaxial digital out and ac-3 rf out. I have always used a separate receiver for my LD player because of the old AC-3 RF coax in for decoding purposes. My new receiver, like most others, does not have the ac-3 rf decoder. I have kept the other receiver, but now have a Sharpvision projector (Xv-H37vua) $600 w/new bulb on eBay and want to use the LD for viewing on big screen.
Right now, I'm just using basic composite audio in because the CLD-59 does not have optical out. Would there be a significant advantage in using the digital coax out? Is there any decoding ability short of a separate rf demod?Dan,
I have a CLD-59 as well. I have it hooked up with the digital coax and the composite. I originally had the digital coax connecting my DVD player to the receiver but I switched the DVD player to optical.
I could be wrong but I think that you need to use the digital coax out on the 59 in order to get digital soundtracks out of the LD's. I don't know about the RF question because I'm not using the AC-3 out on the 59.
FWIW, I can't tell a difference between the coax and the optical.
1 or 0. You either get the signal, or you don'tunfortunately that is the biggest misconception when people deal with digital data, I'm not just talking audio here but ALL digital data - computer networks, processors, memory, audio, telecom. Just bits right? But still there are errors, clocks slip and it is very hard to get it perfect unless you have some kind of reference clock or buffers in the mix. Wanna guess what causes most errors? You guessed it, the physical connection or cable.
Those bits have to be clocked to percision so that you are reading the bit where it is supposed to be interpreted. Say you read it on the rise? Or fall? how do would the receiver know if you meant a 1 or 0? What if the transmitter is spitting out 44100 bits per second but the receivers clock was 44100.0002 bits per second? you'd get timing errors and eventually have no idea of how to interpret the incoming signal (bad example, PCM contains some clocking info in the stream but you catch my drift)
Computers don't have much of a problem with this because everything is buffered to heck and back and reclocked. audio is a different beast.
I have no preference between optical and coax but I sure can see how having the extra conversion between eletrical and optic energy can have an effect.
-edit- keep in mind that it is still an analog signal, it just happens to be pulsed between two states that can be interpreted as digital.
Six of one half dozen of another. While true audiophiles have been known to be fiercely loyal to one or the other for average people using average equipment there is no difference.Strongly disagree. Music and movies work much better with coax. Music for sure almost always sounds better with coax.
The reason is that optical connections are fussy from a reliability standpoint and very prone to jitter, the time based distortion that John Royster discussed. Another consideration is that optical cables are less flexible for tight space installations.
Use a good contact cleaner like Caig ProGold and go coax.
Whenever we have tried optical in the studio it has been a disaster for one reason or another so we gave up a while ago.