Dimensions
12 HP
64 mm deep
Current Draw
10 mA +12V
10 mA -12V
? mA 5V
Price
$180 Price in €

This Module is currently available.

RS-120 Comb Filter

Comb filter based upon a BBD (bucket brigade device) analogue delay line

The RS-120 is quite an unusual filter because unlike other filters it cuts several notches into the audio signal which result in a comb-like look of the frequency spectrum. Soundwise it is perfectly suited to create phaser and flanger sounds.

The filter is based on a bucket-brigade-device delay with very short times that clearly changes the phase of the signal. The feedback of this delay is used here as a resonance parameter that goes up to self-oscillation.

There are two audio inputs with level control. Unity gain is reached at the pot´s position 4, beyond this point the filter will be overdriven.

A control sets the delay time from 2.5ms to 25ms and in addition there are two CV inputs for controlling delay time, one with fixed 1V/oct and a variable one.

https://www.analoguesystems.co.uk/index.php/as-modules/rs120


Ø 3.50 (4 Votes) Average Rating
submitted Oct 16th 2012, 22:43 by modemboy | last Change Mar 23rd 2020, 02:19 by motorhead412

20 Users are observing this