A real-time pitch detection algorithm for speech signals is presented.Combining the wavelet waveform with the time-domain waveform
adopting adaptive methods which get a new benchmark by researching for the latest wavelet transform extreme point and making use of multi-characteristic parameters
such as average energy
zero-crossing rate
old peak-amplitude and current peak estimation
the algorithm extracts the wavelet coefficient maxima.Experimental results show the algorithm can detect the pitch pulse in 2.5ms and is suitable for speech and residual signals.