INSTRUMENT design – wavetable and function-table oscillator objects
The Ooscili object is an interpolating wavetable and function table unit generator used in RTcmix instrument design. What the heck does this mean? It’s an oscillator. It oscillates. The thing that it oscillates is the wavetable or function table array. The slightly less-functional Ooscil object does pretty much the same thing except that it does not interpolate (except for the nexti method intended for use in special cases).
They can replace the older oscili and oscil functions used in previous incarnations of RTcmix/cmix. They can also partially replace the tablei and table and array/table functions used for generating longer-span control envelopes. This cute trick is accomplished by creating an Ooscili or Ooscil object with the frequency set to 1.0/dur where dur is the time-span of the control function.
The values returned by the Ooscili::next() method will be interpolated between points in the original wavetable/function table array. The wavetable/function table array will be accessed cyclically at a rate determined by the frequency set for the Ooscili object. Again, Ooscil does the same thing but no interpolation.
used as an oscillator:
used as an envelope or control signal generator: