Conference cookie::notes$archive:cd_v1

   Sounds great, buy any Digital component, one D/A and hook 'em together
   with ribbon cable.  
   
   Only one flaw - it would take about a century to come up with a standard
   for these 'Digital Signal cables'.  
   
   				dave
   				----

Then some company would come out with 16 conductor digital monster cables
:-)

Carl

Why not have your "preamp" (read: control center) consist of a 16 bit multiply 
function? Then you could have speakers with integrated DAC and amp, 
eliminating "monster cable" and add creedence to the statement: 

			"Digital Ready"!

I realize that the last two statements were mainly in jest, but I do want
to point out that the signals coming out of the player are digital.
While Monster Cable might indeed come out with cables for digital signals
if there were a market, digital signal transmission is not as tricky
as high fidelity analog signal transmission.  A fairly simple cable with
guards (grounds) between each signal path will probably do the trick.

Also note that because Sony was the first to come out with an outboard
D/A, the Sony connector may very well become a defacto standard.  Does
anyone know if the outputs from the Pioneer are compatable with the Sony?

Who knows, someday you may even be able to use your D/A converter with
your video monitor and radio?

				       		-Dave

Hmmm... why not develop a digital speaker... should be very simple. Just
build a box, take 16 drivers where each one is twice as sensitive as the
previous one. Then feed the LSB to the most insensitive one etc. Should work
fine!!!

:-)

We got serious about this "D/A in the speaker" jazz in some other note.
At some point you still need to move air, which requires power that D/As
just can't deliver.  I would hate to think of the problems in phasing
16 drivers properly, but some speaker companies could make a lot of money
claiming that they were the only ones to do it "right".

To avoid the problems with running 16 x 2 wires around your house, you
could just use a hi-speed serial bus (like Ethernet) which only has 2
conductors, then put the decoding logic, D/A, and power amp in the vicinity
of the speaker. (Fiber optics next?)

While thinking about the possibilities, I relized that the outboard decoder
does make sense.  The player itself could then be dual purpose: You could
play your CDs containing audio information through the decoder, but could
also use the player as a CDROM connected to your computer.  Might not be
so far-fetched, eh?

Yeah, CDROM, Compact disc... Integrate AUDIO and homeCOMPUTER system?
                           
Honestly, I am waiting for this option before I buy my next generation
CD-player. Shouldn't be too long looking at the Philips products.
Porbbably we are Wait-For-Marketing peoples go-ahead, not waiting for
the technical details. The required eectronics are there. They just want
to ship a lot og this genreations players, and save the option for the next
generation or the one after that!

I was told, but could someone please correct or confirm what I will say,
that already the discs contain mahine readable titles/timing info. Perhaps
one day, you just put a new disc in the player, and an parallel home
computer wil pick up the new title and track info and store it in your database.

Hein van den Heuvel

Maybe this ties in with what I have been looking for/wondering about. I have the
Sony SL-2700 VCR, which with Sony's PCM-1 can become a digital recorder. If a CD
player had direct digital output, I could run that signal into my VCR and tape
it. I could then tie the VCR output to the D/A converter and play it back. But
they would never give the consumer the technology to copy CDs now, would they? 

Re .9:
     You couldn't just pipe the digital output of a CD player into
a VCR - you'd need to encode it as a video signal first - that's what
the PCM adaptors do.  As for giving "the consumer the technology to copy
CDs", it does appear that the industry wants to avoid this.  The new
Digital Audio Tape standard specifies that the sampling frequency of
44.1kHz is provided for playback only, to make it easy to produce
commerical DAT tapes from the masters for CDs, but to make it impossible
to directly digitally copy a CD at home.
				Steve

re: .8
	I think the information you're talking about is the "lead-in" section
of the disk.  It contains address and mode information for each track on
the disk.  It doesn't contain titles or anything like that.  

							>>>==>PStJTT

re .10

What sampling frequency does the PCM-1 use? If it matches the CD, then that
could be used to transfer them to tape. I just wonder how you avoid the D->A->D
step?