200e

--- In 200e@yahoogroups.com, "r" <datacult@y...> wrote:
>...i know about the history and design of Grants waveformcity and 
> the wavetables etc....but where did Don's come from? What was his 
> thinking on his wave choices?

The 259e uses a sine as the driving function to the waveshaping table 
instead of a saw: a very different situation. the "warp" controls the 
ampiltude of the sine (how much of the table the driving function 
reaches) from 20 to 100%.

the tables on the green side are all mixtures of chebychev 
polynomials(other commmon spellings are "tchebychev", and "chebyshev")
. the red tables were created more freely.

with the right pair of chebychev tables one could move from even to 
odd harmonics with the morph pot, while using the warp to go from low 
to high levels of harmonic content, somewhat like the old 259.

yasi perera