[PD] convolution weirdness

[Charles Henry]

The "weirdness" to which I was referring here was because rfft~
didin't have a nyquist component of the signal.  So, the error was
around .001 for regular tones and varied according to slight phase
shifts, between 0 and 1 at the Nyquist frequency.  So, I switched to
fft~ and ifft~ and the error dropped to 10^-8 (which is aprox. 1/24
bits of precision).
I am using Pd-extended-38.4.  Don't know if this has already been
reported or fixed.  I'm lagging behind current releases :)
Chuck