MOTM

> From: "Eric S. Crawley" <esc@...>
>
> This confuses me a bit.  I think there are 3 types of glide:
>
> -Linear: linear rate in volts/sec
>
> - Exp: exp rate so the pitch "slows" a bit as it reaches the end point
>
> - "Variable": This is what the Expressionist does.  The rate changes to
> make the glide *time* constant.  It is still a linear glide but with a
> slope that varies depending on the interval so that the glide time is
> constant.  I *think* that is what I said in my original message.  It
> certainly isn't exponential.  I think it is useful but it still
> isn't quite
> as musical as exponential glide.
>
> Am I missing something here?  Paul says he is going to allow continuous
> control from lin to exp which is really cool.

I agree with what you said, I think we're just nitpicking on semantics here.
If you play 1 note and glide to the next on the Expressionist, it glides
linearly, and so sounds just like normal linear glide to the ear (in the
context of just those 2 notes). How about a new term: "variable slope
linear", or as JH likes to call it in his interpolating scanner notes,
"piecewise linear".

> I had the first ELP album on the CD player this morning and it is really
> easy to hear the exponential glide on "Lucky Man".  The glide
> takes its own
> sweet time getting to the final pitch.  I think the reason this is more
> appealing is that singers tend to use "exponential glide" when
> sliding into
> the correct pitch.

Exactly - that's my theory, too.

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...