[Pythonsound-devel] Oscillators broken

[Maurizio U. P. <um...@ti...>]

Hello Paul.

OMDE oscillators function were broken for non-constant frequency values.
For this reason, temporarily, they work with constant frequencies.

The problem is due to the main difference between Cmask and pmask
algorithms.

In Pmask the interpreter has total control on time flow. The author is
always sure that if

t2 > t1

he will never evaluate a generator at t1 after he evaluated it at t2.
Hence he can pick a reasonable small dt and integrate all functions by
this step.

OMDE functions can be evaluate randomly so, in theory, each time I want
the value of an oscillator at some time t1, I have to calculate its phase
at t1, integrating the phase value from the beginning. Do you know any
better method?

Of course I could add some phase value caching and speed up things in most
of the cases (most of the times, using pmask algorithms, the things work
just like with Cmask)...

Any ideas?

Maurizio Umberto Puxeddu.