A fixed filter bank provides direct access to the spectrum components of a given signal, breaking it into narrow bands you can fiddle with individually. Just lending an LFO to contort the low end of a guitar phrase, or letting a square wave impose a rhythm by turning on and off some mid-range — it’s an approach I have come to love. In this patch, a fairly rich noise source is being sent through a fixed filter bank. Four spans of the filter bank are going into a voltage-controlled mixer, and those each are being modulated by a synchronized quad LFO. In addition, the bounds of the noise source are being affected slightly by a slow LFO, separate from the quad LFO.

The filter bank is the newest module for me: the FXDf from Make Noise. The noise source is the Fourses module from Peter Blasser’s Ieaskul F. Mobenthey. The mixer is the ADDAC 802. The quad LFO is the Batumi from Xaoc. The additional LFO is the Dixie II from Intellijel.

The audio was recorded on a Zoom H4n via a Mackie mixer. The track was then trimmed of some high end and given a fade-in and a fade-out in Adobe Audition.

Tags: eurorack, modular, synthesizer, week 52 2018, View by:disquiet