Digital Audio Effects, talk 11: Time and frequency-warping musical signals

In these DAFx talks, the main concepts in the field of audio effects processing will be presented. In the 11th seminar of the series, the interesting audio effects that can be obtained by warping the time and/or frequency axis of an audio signal will be described. Time warping aims at deforming the waveform or the envelope of the signal, while frequency warping modifies its spectral content by transforming a harmonic signal into an inharmonic one and vice versa. The effects obtained by warping often increase the richness of the signal by introducing detuning or fluctuation of the waveform. In this talk, we'll see that time and frequency warping give rise to a tremendous amount of possibilities still unexplored from a musical point of view.