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Re: [motm] Annoying MOTM envelope behavior

2002-05-08 by Paul Schreiber

Hmmm...

Just a few initial questions:

a) Are you *sure* these are the "Rev B" EGs (with the TRIG wire mod)?

b) What is the GATE source?

c) Are you using the TRIG input as well?

Paul S.



> 
> 1)  I patch up a sound and hit a key on the keyboard to trigger the sound and 
> it sounds OK.  Then I start playing and all of a sudden the sound gets 
> brighter and louder (I have envelopes going to both filter and amp).  This 
> isn't right.  The envelope should not output higher voltages because I'm 
> playing faster or more legato, yet it does.  I finally got around to scoping 
> it and confirmed it.  With the exception of a little initial spike the ADSR 
> outputs about 4 volts max.  Yet at certain settings if I play a fast trill I 
> can push it up to about 6 volts.  Set A=0, D=6, S=7, R=4 and go into the a 
> filter FM input and you'll see what I mean.
> 
> 2)  If the Sustain level is set way up to about 10, then the Decay acts like 
> an Attack.  I can set the Attack to 0 and move the Decay around to get 
> various length attacks.  It seems to control the attack time from the normal 
> 4 volts up to a higher voltage which is set by the sustain level.  Strange.
> 
> 3)  I can set Attack to 0, Decay to 0, and Sustain to 10 to get plain organ 
> type envelope, yet the attack portion is too soft.  It's impossible to get a 
> hard solid sound at this setting.
> 
> And I haven't even gotten into the somewhat artificial sound of the envelopes 
> either because I need to compare side by side with another synth.  But they 
> almost sound linear instead of exponential (even though I'm sure they're not) 
> and don't seem to have a really good bouncy and punchy quality I like.  But I 
> need to compare to others before I can say for sure what's going on here.
> 
> I've never experienced these things with any of my other synths.  Am I the 
> only one dealing with these issues?
> 
> -Elhardt
> 
> 
>  
> 
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> 
>

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