Analog Synth Gallery

Arpeggiator:

Many synths can only play one note at a time (they are monophonic). With the arpeggiator on, if more than one note is pressed at a time, the synth will alternate between the notes. They also often have a range control that allows the user to tell the ynth to play additional octaves - so if the range is set to two octaves the synth will play the keys that are held down in the octave that they are played and then in the next octave up/down....

The cs15 is a beaut of a little (3 octave keyboard) monosynth and is set up in 2 parallel audio paths. The are 1 lfo (sine, ramp down, non-triggerable s/h), 2 VCOs, 2 VCFs, 2 egs (adsrs) and 2 VCAs. The first audio path starts with VCO1 (triangle, ramp down, and square, 64'-2', lfo mod, pw% 50-90, and pwm) and goes through a mixer module which is mixed with a noise source, either internal (white) or external. It is then ran through the VCF which can either be a LP, BP, or HP. It is a resonant filter, but does not go into sharp self oscillation. The filter can be modulated by the LFO or a EG (eg1+, EG1-, EG2+) and these modulation amounts are controllable. From the filter it goes in the AMP which

Synth Glossary