Dave Smith Instruments SYNTHESIZERS

Sorry if this is a repeat for any of you (posted on the board...)

Hi folks,
 I'm slowly getting through all of the great features on my PEK and have
come across something strange. In all of the documentation and diagrams for
signal flow of the evolver voice, it shows that the feedback 2 for delay
sends the delayed signal back to the filter section, where it should follow
through the VCA and then through the delay again. Mine doesn't. I have a
basic patch of plain saw waves going through an open filter and no envelopes
or modulation (VCA level = 0, sustain = 100), and then through delay 1, with
time set at 125 and amount at 70. This exhibits a signal, with repeat.
Turning up feedback 2 should give me multiple repeats, but it does not -
just the same one note and one repeat. The feedback 1 works as it should
(when turned up, more repeats occur). Feedback 2 seems not to do anything,
EXCEPT when I'm holding a note down on the keyboard, or when the release
time of the VCA is turned up. Then, it does its job, but only until the note
is released. What is up with this? Shouldn't it output multiple repeats
similar to feedback 1, but affected by filtering, etc.? Maybe something else
is supposed to be on, but I can't figure it out.

Thanks,
Mark

Mark Spano <spano@...> writes:
> Feedback 2 seems not to do anything, EXCEPT when I'm holding a note
> down on the keyboard, or when the release time of the VCA is turned
> up. Then, it does its job, but only until the note is released. What
> is up with this? Shouldn't it output multiple repeats similar to
> feedback 1, but affected by filtering, etc.? Maybe something else is
> supposed to be on, but I can't figure it out.

Er, well the filter is before the VCA, and FB2 gets "injected" into the
filter's input, so FB2 will be affected by both the filter and VCA
envelopes -- it's just like the oscillators in that sense.

-Miles
-- 
Love is a snowmobile racing across the tundra.  Suddenly it flips over,
pinning you underneath.  At night the ice weasels come.  --Nietzsche

> Er, well the filter is before the VCA, and FB2 gets 
> "injected" into the filter's input, so FB2 will be affected 
> by both the filter and VCA envelopes -- it's just like the 
> oscillators in that sense.
> 

Yes, as he says the second feedback is cuttoff by the amplifyer - so the
repeats wont be heard.

A way arount this is to open the Vca, and then use the mod matrix and ENV3
to directly modulate the Oscillator levels.  

Tony