FFT

[Martin Czech]

:::  I know we've touched on this before but... does anyone have
:::or know of, a formula for doing a FFT with two waveforms?
:::
:::  It seems the waveterm/ppg/wave breakdown the eprom stored
:::wave and perform a FFT transform of some kind to get the 
:::waves inbetween the two ROM waves...
:::

They waves are anti symetric, so only one half is to be stored.
For linear readout: extend by mirror image (time AND polarity).

You don't need FFT for this.

You need it however, to store any wave into that symmetric
format.



m.c.