# Max/MSP : pfft~ based convolver

## The pfft~ convblock and complex multiply

It is a direct application of the mathematical property IFT ^{-1} [DFT(X(n) . DFT(Y(n)] = X(n) * Y(n) where * denotes the convolution operator.

## pfft~convolve unit test

A "short" signal (raised cosinus) is convolved with a Dirac. The result is the original signal delayed.

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