Frap Tools Sapel is a random module for modular synthesizers in Eurorack format. It randomly generates control voltages and noise. The module is divided into two sections, one generates audio noise in four different versions (white, blue, pink and red noise) and the other two mirrored random clocks, random voltages and random clock sources. It is also possible to set a random distribution via potentiometer and apply the selected distribution to each of the four paths independently.
Audio NoiseEach form of noise has its own output, with the following audio signals:
The dual clock generator consists of two independently operating stages. This is based on the signals from the random voltage channels. The frequencies can be set by potentiometers and modulated by CV inputs. Normal and arbitrary clock signals can be picked up individually, whereby the random output has two operating modes:
Two channels generate random voltages on a semitone and octave basis. The number of steps (n) used can be varied from 1 to 6 via rotary control or CV inputs. There are two ways of processing the values: