Another approach is to use a Taylor Expansion. It's pretty accurate in the
first quadrant. One advantage over the resonator is that it does not drift.
Another advantage is that you can do FM without paying the penalty of
recalculating the coefficients.

Here is some free Java source.

Phil Burk

On Wed, Feb 20, 2019, 4:12 PM robert bristow-johnson <> wrote:

> personally, i think that phase accumulator and wavetable lookup and
> intersample interpolation is the best way to do a time-varying sinusoidal
> oscillator,
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