Pitch-scale and time-scale modification of speech by PSOLA techniques.

Function used by PSOLA speech modification technique. Finds exact point of pitch pulses in speech.

基于频域基音同步叠加的语音合成算法，在时域基音同步叠加的基础上增加频域调整的部分-Speech synthesis algorithm based on frequency domain pitch synchronous overlap and increase the frequency domain adjusted on the basis of the time-domain pitch synchronous superimposed on part

PSOLA Code Pitch Synchronous Overlap and A-PSOLA Code Pitch Synchronous Overlap and Add