Conference cookie::notes$archive:cd_v1

    In mass production, DEC can manufacture CD's of VMS for $2.75 a shot.
    
    Going to the CD store has never been quite the same ...
    
    jp

    Re: .2
    
    I think it would be DDDD, since the source is also digital.
    
    I wonder what it sounds like.  I'll have to find someone with a
    "hollow state" audio system to listen to it on - it would be the
    first time VMS was ever run on vacuum tube equipment!
    
    				Paul
    

    Actually it would be DDDDD since the source of the source is DIGITAL.
    
    (you may now remove tongues from cheeks)
    David.

CD ROMs are supposed to make some of the LOUDEST noise ever.
... A headbangers delight.   (�:  ~/~  :�)

    If you do decide to play a CDROM disc on your audio CD player,
    first turn the volume ALL THE WAY DOWN!  When you play it, you
    will hear a high-level buzz that doesn't really change much.
    
    I have a couple of CDROM discs with various VAX software on them- 
    haven't located an RRD50 to play them on!
    
    				Steve

    CDROM's make a very loud and obnoxious noise on audio CD Players.
    
    I've also heard it rumored that with a relatively simple change
    to the hardware, Digital's CD Readers can be made to play audio
    CD as well.   Haven't seen it done yet though.   I have one, but
    I haven't really played with it enough to figure it out yet.
    
    -Monty-

    Does the RRD-50 have a D/A converter in it?  If not, it would not
    be easy to make it play audio CDs.
    
    On the other hand, does DEC or any third party have a D/A board
    for the VAX?  If so, how big a VAX would it take to move the music
    off the disk and to the D/A in real-time?  Would there be any computes
    left over, perhaps for some signal processing?
    
    Also, would it be possible to connect a DAT recorder's digital input
    to the VAX, and use the VAX to change the sampling frequency and
    allow digital to digital copying of CDs onto DAT cassettes (for
    personal uses which do not infringe on the copyright!)?
    
    				Paul
    

    Back for the VMS V2 announcement, Steve Beckhardt hooked up an
    LPA11-K to a cassette deck and a magtape drive to digitally sample
    and record "Also Spracht Zarathrustra" (sp?) on magtape, and then
    played it back through the 780.  It looked and sounded impressive,
    but I think it was lost on the audience.
    
    We have several A/D converters for VAXen, especially MicroVAX.
    
    				Steve

         A demo like this has already been done.  A cassette was
         played, via a standard 'walkman' cassette deck, into a
         VAXlab using the ADV11.  The data was stored on disk
         and could be played back via some external speakers.
         There was also an array processor used to do some
         FFT's.  This is all very easy to do with the VAXlab
         hardware and software (VSL).
         
         -Eric

    
    	I've also heard it "rumored" that they had Fleetwood Mac playing
    off a VAX up in Marlboro manufacturing some years ago. The person
    told me you could see the head on the RRP type disk do a read every
    few seconds or so, yet, the music played continuously and in stereo.
    
    	Note that FZ has "Unlawful reproduction or Sampling" in his
    legal threat on his material. Uh Uh Uh! No No! You cant take those
    bits arrranged like so - they're *his*! If you disregard this, I'm
    sure you could build an impressive library of sounds. You could
    probably take some samples and convolve them with another to get
    a completely unrecognisable result. Modulate one song with another,
    etc.
    
    	Joe Jas
    

    I believe the $150 was quoted as the price to distribute the product
    on a tape.  This would include the price of the tape itself (which
    I am sure is much less than $15 wholesale) and all the costs incurred
    in putting the software on the media, storage costs, etc.
    
    -Eric

    
    I'm relatively close to this issue, as we are working with a customer
    with 800 Vaxes who needs a simple way to get their media to everyone.
    As I understand it, CD's can be pressed, one after another, just
    like a production line.  That isn't really the case with copying
    tapes (espcially when you need thousands of copies at once).  There
    has to be a lot less people working the equipment that copies VMS
    onto CD's than you need to have people load tapes.
    
    Bruce

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Note 1.2                            CD Notes                              2 of 9
LDP::WEAVER "Laboratory Data Products"               18 lines  24-NOV-1986 18:53
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This NOTES file is intended for discussion of CD's as audio products.
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	    					Thanks,
	   					-Dave (the moderator)

    Just a note from the current moderator.  It's been interesting
    so far, but the content of most of the notes doesn't belong
    here.  You might want to resume the conversation in the VMSNOTES
    conference.

    No no, please don't move it to the VMSNOTES conference.  Move
    it to the HACKERS conference instead.
    
    	Thanks,
    
    	A reader of HACKERS but not VMSNOTES

    Seems to me one of:
    
	Compact Discs as peripherals    LDP::CDPERIPH
	Compact Disk Reader             CDROM::CD_READER
    
    would be more appropriate
    
    				Steve