I think a simple AR envelope would be a good idea -- not just for
drum sounds, but also for modulating filters, synced VCO's, etc.
My modular is in MOTM format, so I'm thinking of a 1U module with
four knobs and four jacks, having two AR envelopes, each with a
trigger input and envelope output. Imho, having separate trigger and
gate inputs is unnecessary.
In order to make better use of gates, it could be designed that the
envelope is held high as long as input is held high. That is the
attack starts when the input goes high, and the release starts only
after the input goes low (and the attack is finished). So it would
produce full AR envelopes with short drum triggers as one would
expect, but could also be controlled by using gates of different
lengths. Also looping, cascading, and different gate/trigger logic
(eg. the output always goes low when the input goes low, the envelope
resets on a new leading edge, etc.) could easily be implemented with
switched jacks and a couple of toggle switches, or hardwired
according to individual preference.
While I would need to look into this further, if a panel were
available, this could probably be built using two MOTM-800 PCB's
(which are $20 each). The problem would be getting decent 1M pots.
On 11/8/07, thomas white put forth:
drum sounds, but also for modulating filters, synced VCO's, etc.
My modular is in MOTM format, so I'm thinking of a 1U module with
four knobs and four jacks, having two AR envelopes, each with a
trigger input and envelope output. Imho, having separate trigger and
gate inputs is unnecessary.
In order to make better use of gates, it could be designed that the
envelope is held high as long as input is held high. That is the
attack starts when the input goes high, and the release starts only
after the input goes low (and the attack is finished). So it would
produce full AR envelopes with short drum triggers as one would
expect, but could also be controlled by using gates of different
lengths. Also looping, cascading, and different gate/trigger logic
(eg. the output always goes low when the input goes low, the envelope
resets on a new leading edge, etc.) could easily be implemented with
switched jacks and a couple of toggle switches, or hardwired
according to individual preference.
While I would need to look into this further, if a panel were
available, this could probably be built using two MOTM-800 PCB's
(which are $20 each). The problem would be getting decent 1M pots.
On 11/8/07, thomas white put forth:
>Ken,
>
>Not too sure what your thoughts would be on this
>but... I have recently found the need for a simple
>Attack/Decay or Attack/Release module to use with my
>growing drum synth section of my modular. Have you
>ever thought about making a simple pcb like this? I
>was motivated to ask you after recently rediscovering
>your bandpass filter pcb with the stacking nature and
>pcb mounted pots. Anyway, thought I would put the
>question out there to see what you would think. My
>needs would be something like
>
>Attack Pot
>Release Pot
>Gate Input
>Trigger Input
>Envelope Out
>Manual Trigger Button
>LED for twinkly light folks
>MTA-156 power connector as standard with most other
>modules
>
>Of course, if you wanted to get really fancy you could
>add a "end out" pulse like the burst generator so they
>could be looped if you had multiple units. This would
>need a 4th jack though (but worth it for me)
>
>Just my two cents. No other pcb manufacturer has
>anything less than a full ADSR or VCADSR. I need to
>save space as many out in the community now do. Anyone
>else see a need for something like this?
>
>Thomas White
> Natural Rhythm
>www.naturalrhythmmusic.com