FFT resynthesis

FFT resynthesis analyzes a waveform with a fast Fourier transform (the algorithm that reports one magnitude and phase per frequency slot), edits that spectrum, and rebuilds a waveform from it with the inverse transform.

In wavetable work, the cycle is transformed into magnitudes and phases for each frequency bin. An editor can then remove partials, shift formants, or reset phase before the inverse transform builds the stored frame. Spectral morphing and harmonic editors use this process.