Description
This module couples with the Quadrature Sine to make an all analogue Frequency Shifter with rich sound potential.
Audio inputs pass through two precision 6-stage phase shift networks before being ring-modulated with the Sin/Cos from the QSine (connected via 2way cable on the back) – the sum and difference of the ring-modulators then give Down (difference) and Up (sum) shift outputs.
There are two audio inputs, the first of which has a polarising level control and a x 2 amplification factor – this feels like a good feature to use with external feedback processing (eg. try via the PT Delay module!). The audio path is DC coupled throughout – it is definitely worth experimenting processing sub-audio pulses etc. (especially with feedback).
The Feedback control feeds either the Down or Up output back into the input summing network – this brings about some very gnarly sonic areas. There is soft-limiting so that amplitudes don’t run out of control.
While typically designed for use at audio rates, having the QSine running at sub-audio rates gives some amazing phasing – especially if you externally mix/pan the outputs + dry signal.
Note – this is a frequency shifter not a pitch shifter! With anything other than pure sinewaves you’ll get some enharmonic possibilities!
eg – if the QSine is set to 100hz and a 60hz sinewave is fed into the audio input, you’d get a Down shift frequency output of 40hz (difference) and an Up shift frequency of 160hz.
The module combo is really quite experimental & capable of really animating a simple audio input – especially with feedback!
Size: 1FW
Current: +ve 50mA, -ve 50mA
