The playback speed of an audio signal is decreased or increased by repeatedly reproducing a preset audio signal domain or removing a domain of the audio signal. A memory stores the audio signal and an audio pitch is calculated from the audio signal readout from the memory. The audio pitch and...http://www.google.fr/patents/US5717829?utm_source=gb-gplus-shareBrevet US5717829 - Pitch control of memory addressing for changing speed of audio playback
Pitch control of memory addressing for changing speed of audio playback
