[PD] Analog/good-sounding oscillators in PD

[Martin Peach]

alexandre matheson wrote:

> hello,
>
> Sounds like a very interesting project.
>
> It is my understanding that analog synthesizers generate the basic 
> waveforms with additive synthesis.

Analog synths do subtractive synthesis: they start with square and 
triangle waves and pass them through filters to remove harmonics. The 
square and triangle waves are derived from the voltage on a capacitor 
that's charged and discharged at a constant rate.
A fourier synthesizer does additive synthesis by adding harmonics 
together at various levels. Analog synths have trouble with this because 
analog oscillators generally don't stay synchronized.

Martin