[PD] [polywavesynth] and [polygrainsynth] bug fix

[hard off]

hi again....some more comments

1) at first i also tried changing the ADSR sliders to a log setting, and
totally understand what you mean about the low values and clicking.  my
workaround was just to change the range from 1-5000 to 5-5000.  however, i
think an even better solution is not the log function, but an exponential
one.

if you change the sliders to 0-1 range and then do:

[r slider-value]
|
[pow 2]   (or 3)
|
[* 5000]
|
[+ 1]

then that gives the most user-friendly sliders in my opinion.


2) i understand that you can change the pan position and speed, but unless
i'm mistaken, there is no way just to keep everything centre panned.  i
think a pan width slider would be helpful.  however, maybe that's just
something i want and wouldn't be that important for anyone else, so i might
just put that on my own modified version.

3) not sure what was happening with the gain problem.  perhaps svf~ puts out
some gnarly peaks that are well above the -1 1 threshold, and that was
making things sound weird when i changed volume.  the problem seems fine
now, because i deleted the gain section from the polywavevoice~ abtraction
and put the gain directly onto the ouptut of polywavesynth~.  the gain
slider also had a really unusable range, so i also adjusted that into a more
manageable range.



i will definitely use this synth a lot from now on.  today i was running it
with an SH101 emulator i am making, and a modified sequenced version of
frank's vosim~ abstraction, and some drum synths, and it was all sounding
pretty sweet.  really cool to be able to get some polyphony happening and do
chords and stuff!
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