Catherine McKay wrote:
> OK, now I'm really confused. Someone else (Cassy?)
> asked me whether it was an audio or a video DVD. I
> thought a DVD WAS audio. What the heck is an audio
> DVD and how does it differ from a CD?
DVD audio uses the high capacity of DVDs to store far more music
information. Because of
this, DVD audio can play back music either in
two-channel form, the way
CDs do now, but with much higher
resolution, or in
six-channel form using a surround sound system.
Currently, CD audio has a
44.1kHz/16-bit bit rate, while two-channel
DVD audio is 192kHz/24-bit
playback. Six-channel is 96kHz/24-bit,
meaning the six-speaker mix
of music is higher quality and has greater
depth than two-channel
compact disc.
The higher frequency and bit
rate mean much better audio range for
the music, allowing for more
depth and all kinds of subtle, softer details
to be heard. The narrow bit
rate of CDs means only so much data can
get through, so a lot of
subtleties are lost.
Jerry
