SERRA: Nano Modules’ ultimate ADSR Envelope
3,4 / 5,0 | 
Can envelopes be extraordinary or are they just utilities you have cluttering up the place? SERRA offers some interesting possibilities within our old friend the ADSR.
SERRA
As a basic function, SERRA is a fully controllable 4-segment, Attack, Decay, Sustain, Release module. The ADSR is held in a natty four-slider shape on the front panel that can be set by hand or controlled, varied and manipulated over CV. Give it a Gate or Trigger, and you’ll produce a smooth movement in voltage from the ENV output. But there’s more.
You have these two intriguing knobs at the top; an Attenuverter and an Offset. These refer to the use of an input signal that can modulate and move the envelope about. You can boost and squash an envelope, invert it and widen it under external control. Or, without any external interference, you can use the Offset to add or move voltage shifting the envelope up and down in power and placement. This manipulated envelope arrives at its own output.
Nano Serra · Source: Nano
Other features include the ability to range itself from 1 ms to 40 seconds with options to widen it further with external CV. Each segment has an LED in the sider so you can always see where you are in the envelope. There’s also an end-of-cycle (EOC) output to send a pulse out at the end of every envelope. One nice feature that I’ve not seen before is that the CV controls over the segments can be normalised. That means you can control all parts of the ADSR from a single source of modulation.
There’s nothing particularly revolutionary going on here, but Nano Modules has put together a nicely featured ADSR that offers a lot of creative uses over the usual envelope shaping of filters and VCAs.
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One response to “SERRA: Nano Modules’ ultimate ADSR Envelope”
They also added it as a module to VCV Rack.
(https://library.vcvrack.com/NANOModules/SERRA)