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- Newsgroups: rec.audio
- Path: sparky!uunet!mdisea!uw-coco!uw-beaver!karty
- From: karty@cs.washington.edu (Richard Karty)
- Subject: Could a CD be played backwards, or slower?
- Message-ID: <1993Jan28.001507.2901@beaver.cs.washington.edu>
- Sender: news@beaver.cs.washington.edu (USENET News System)
- Organization: Computer Science & Engineering, U. of Washington, Seattle
- Date: Thu, 28 Jan 93 00:15:07 GMT
- Lines: 35
-
- Some idle speculation...
-
- Question #1:
-
- I am wondering if a CD could be played backwards.
-
- Here is what I've been thinking:
-
- (N.B. I have only a lay understanding of the technology. I don't even
- know if I'm using the word 'bit' properly. So please bear with me!)
-
- Let's assume the motor and so forth could be easily reversed. Now a
- bit of digital information that was, say "1010011" on the CD, (which
- encodes the number 83, right?) would come out as "1100101" - which is
- totally different.
-
- So lets say the CD player could be designed to reverse the binary
- digits of each "bit" (number/group/chunk/whatever it's called) so that
- it is read correctly, but it would start with the last bit and proceed
- to the first.
-
- What would that sound like? Like an analog tape or record being played
- backwards?
-
- Question #2:
-
- What would you hear if you slowed down a CD?
-
- - if you slowed down the speed of rotation, or the sampling rate, or
- both?
-
- Thanks for any ideas you may have on this. If you think it's
- inappropriate to take up space on rec.audio with this subject, please
- respond by e-mail.
-
-