[Tom McCreadie]

William Sommerwerck wrote:

"Mike Rivers" wrote in message ...

And some people say "Dolby dulls the high end" because they
can hear the de-emphasis taking place when they switch in in
when the music is playing.

I tested this over 30 years ago. Dolby B does dull the top end. dbx II
doesn't.

Back in the late '70's and early '80's, Nakamichi was under fire from many
people who'd observed that Dolby B cassettes made on a Nakamichi deck generally
sounded dull when played back on the decks of other manufacturers. An
explanation for this apparent dullness, gaining rapid traction in audio circles,
was that all Nak decks employed an equalization deviating from standard.

Nakamichi vigorously protested that 'bum rap', insisting that they - and not the
other manufacturers - were the guys who were diligently interpreting and
adhering to the standard. To underpin their case and re-educate the misguided
:-), they had their research dept. punp out some 'White Papers ' and Technical
Bulletins, for example:
- "Nakamichi Cassette Equalization: The Standard View"
- Nakamichi Technical Bulletin 2. "Playback Equalization"
--
Tom McCreadie