* JR Moore <[EMAIL PROTECTED]> on Mon, 01 May 2000
| Yeah BUT, analog signals when recorded don't have a set size. You can't say
| "1 minute of analog audio takes 5MB", you just can't. You can control the
| amount of audio it holds by changing the speed.
Say what? A CLV Laserdisc _always_ holds 60 minutes of analog video on the
video track and 60 minutes of analog audio on the audio track, and the
speed is constant (Constant Linear Velocity). A 60 minute cassette
_always_ holds 30 minutes of analog music on a side, and the speed is
constant. A T-120 VHS tape _always_ holds 120 minutes of analog video and
120 minutes of analog audio, and the speed is constant. In all three
cases, the media density is constant. Assuming that the 5MB per minute of
audio figure is accurate for a given media format, I can say with certainty
that 1 minute of analog audio always requires 5MB for that type of media.
Sony deliberately engineered Compact Disc to use the same mechanisms as
Laserdisc. The media densities are identical. That is how we got CDV, a
Compact Disc with both CD-DA and Laserdisc tracks. And the fact remains:
CD-DA uses less physical space on the media for the same length of signal.
--
Rat <[EMAIL PROTECTED]> \ Warning: pregnant women, the elderly, and
Minion of Nathan - Nathan says Hi! \ children under 10 should avoid prolonged
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