An Algorithm for V/UV/S Segmentation of Speech

Let f(n) be a sampled voice signal. Our goal is to identify the voiced (V) portions of f (as opposed to the silence (S) and unvoiced (UV) portions). In the following discussion, the sampling rate is 22050 Hz, quantized at 8 bits. A window of length of 880 is twice the maximum period of the minimum frequency of 50 Hz we will track in the time domain. We use the algorithm described below to provide a robust estimate of the fundamental period to start our glottal pulse (GP) or pitch tracker described in [1].