ER-301/Grid Quantizer

Applications

• adding grit to sounds (i.e. similar to bit crushing)
• restricting modulation signals to a finite set of levels (i.e. stair-case function)

This is not a pitch quantizer because this unit has no knowledge of 1V/oct or scales. A separate (and much more complicated) upcoming unit will take care of these tasks.

Description

This simple unit quantizes the incoming signal to a given number of levels with separate controls for pre-gain and post-gain.

${\mbox{QUANTIZE}}(x;{\mbox{pre}},{\mbox{levels}},{\mbox{post}})={\frac {{\mbox{FLOOR}}({\mbox{levels}}*{\mbox{pre}}*x)*{\mbox{post}}}{\mbox{levels}}}$

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  The transfer function for when levels = 8.

Parameters

pre

Control Type	Has Sub-chain?	Fader Range	Fader Scale
Simple Fader	no	-10 to 10	linear gain

This pre-gain multiplies the signal before quantization.

levels

Control Type	Has Sub-chain?	Fader Range	Fader Scale
Simple Fader	no	0 to 36	linear

This parameter sets the total number of output levels that exist between -0.5 and 0.5 (or equivalently, between 0 and 1). In other words, assuming the pre- and post-gains are 1, the distance between one output step and the next output step is: ${\frac {1}{\mbox{levels}}}$.

post

Control Type	Has Sub-chain?	Fader Range	Fader Scale
Simple Fader	no	-10 to 10	linear gain

This post-gain multiplies the signal after quantization.