A system and methodology for prosody modification

摘要

A prosody modification system and methodology calculates synchronization marks in an original, quasi-periodic signal to a finer precision than the sampling rate of the original signal. Synthetic synchronization marks are generated according to the desired prosody modification also to a finer precision than the sampling rate of the original signal. Waveforms are extracted from the original signal and are fine-shifted to the exact location on the synthetic time axis by a resampling technique. The fine-shifted waveforms are windowed by an asymmetric filtering window, overlapped, and summed together to produce a synthetic signal.