|
PM osc saw 2 square morph |
|
If you have played a little with the PM oscillator you will no that carrier:modulator ratio 1:1 gives a sawtooth like spectrum and 1:2 gives a square like spectrum. This idea uses a LevMod (ring modulator) and level shifter to shape the sine through to a 2X frequency sine. So a signal applied to the Mod Depth input will morph from saw-ish to square-ish.
Because the modulator is the output of the carrier, this is known as feedback FM, the Phase mod level is quite sensitive and will break into noise if set much higher.
The example patch contains two circuits as shown and filter envelope etc.  PMSawSquare.pch2
|
|
Last Updated ( Wednesday, 01 February 2006 )
|
I have no clue what they're talking about, maybe it's something you can use:
"If the OscPM is set to 0 Hz in the Part tuning mode and initially reset by a short pulse on the Sync input (e.g. by using the Status module Var. Change output) this module can act as a sine function. To use this option, open the Phase Mod knob fully and add a linear mixer in front of the Phase Mod input. If the linear mixer knob is set to [6.3 (8)], a control signal between -64 and +64 units will cover exactly 360 degrees of a sine function. The sine value will be available on the output of the module." (from the manual). EDIT: Here is a patch that uses the sine shaper. A triangle wave is clipped to make a square with variable slope sides. Passed through the sine shaper you get a sort of CZ101 phase distortion, resonant sweep. Without using a filter.  cz101.pch2 |
|
Last Updated ( Sunday, 29 January 2006 )
|
|