MOTM

I like this idea. It's not just a dumbed down 320 but a whole new module.

At 12:21 PM -0500 5/12/01, mark@... wrote:
>  >a) 3 pots, 6 jacks:
>
>(jacks cost less than pots, LED's draw current and make noise)
>
>1) UP
>2) DOWN
>3) HOLD
>
>6 jacks:
>
>1) UP
>2) DOWN
>3) HOLD
>4) THRESH
>5) OUT
>6) SLEW
>
>The time set by HOLD begins when the rising voltage reaches 5V or when the
>falling voltage reaches 0V.  THRESH uses a switched jack.  With a jack
>inserted into THRESH, and HOLD set to 0, the falling voltage begins when
>the rising voltage reaches the TRESH voltage, the rising voltage begins
>when falling voltage reaches 5V _minus_ the THRESH input voltage.  Got
>that??  Since the falling voltage cannot reach 5V, if THRESH input is 0V
>the cycle is not retriggered.  So if the input is a short trigger, it
>cycles once then stops.  If the input is a gate, the falling voltage (or
>hold) begins when the gate is released.  Note that HOLD also delays the
>onset of an envelope.  Modulating THRESH with a voltage can produce various
>functions, including a stepped function similar to S&H.
>
>SLEW output is an output -- OUT run through a simple "degenerative emitter"
>(but without the trimmers or current source).  It's more like a lag circuit
>than true sine shaper to save space and money, but it will produce an
>approximated sine if OUT is a triangle.
>
>Features:
>Makes tri, up saw, down saw, pulse, trapezoid, various functions, complex
>LFO's, and a multitude of unique shapes.
>No tempcos needed.
>Cannot be replaced by a 320, 300, or 310.
>Annoys people who already bought $erge and EM$ synths :)
>Can also be used a VC EG.
>
>Disadvantages:
>"single sided" output.
>No LED to indicate rate -- you'll have to use your ears, tough guy.
>No simple "rate" control for tri waveforms (you need a mult).
>No simple "PWM" for pulse waveforms (you need to modulate HOLD).
>

-- 
------------------------------------------------------------------------
Scott Juskiw 
scott@...