A Note for CC Boston Engineering

[Dan Strassberg]

But with today's technology, you don't HAVE to change the pitch when you
speed up the tempo (and reduce the playing time). As with sped-up reading
for the blind using a synthesizer to create the voice, the tempo need not be
linked to the pitch. Simply dropping samples out of the data stream
increases both pitch and tempo, but there are all-electronic methods of
increasing the tempo without increasing the pitch. Increasing only the tempo
is more complicated than increasing both pitch and tempo, but with today's
DSP technology, the task sounds well within the state of the art.

--
Dan Strassberg, dan.strassberg@att.net
eFax 707-215-6367

----- Original Message -----
From: "rogerkirk" <rogerkirk@mail.ttlc.net>
To: "Cooper Fox" <fox893@yahoo.com>;
<boston-radio-interest@rolinin.bostonradio.org>; "Matthew Osborne"
<mattosborne1976@yahoo.com>
Sent: Wednesday, April 05, 2006 2:58 PM
Subject: Re: A Note for CC Boston Engineering


> >> Ahem...  I may be completely off on this, but that
> >> was
> >> a trick in the 60s and 70s.  I don't believe you'd
> >> find many(if any) present day Top40's that pitch up
> >> their music.
> >>
> >> Am I right on this?
> >
> >Actually Cooper, I know for a fact that this practice
> >is very much commonplace today.  In fact, its not just
> >restricted to CHRs either - a lot of Hot ACs, straight
> >up ACs, country stations, and quite likely more do
> >this.
>
> Not only is it a "trick", but it's very effective.  With
> 70's technology, (speeding up media playback) upping the
> the pitch slightly makes a song sound "brighter."  The
> other side-effect is that listeners become used to a song's
> tempo.  Listening to it at "normal" speed on another station
> makes it sound draggy & slow by comparison. Of course, it
> also makes it sound draggy & slow on one's personal music
> device, too.
>
> As a Mobile DJ, I noticed (back in the 70's) that home-
> quality turntables seemed (on the average) to play songs
> just "a little bit" fast, too.  Of course, with today's
> technology, the tempo can be sped up without changing
> pitch and vice versa.