A method for segmenting a signal into segments having similar spectral characteristics
is provided. Initially the method generates a table of previous values from older
signal values that contains a scoring value for the best segmentation of previous
values and a segment length of the last previously identified segment. The method
then receives a new sample of the signal and computes a new spectral characteristic
function for the signal based on the received sample. A new scoring function is
computed from the spectral characteristic function. Segments of the signal are
recursively identified based on the newly computed scoring function and the table
of previous values. The spectral characteristic function can be a selected one
of an autocorrelation function and a discrete Fourier transform. An example is
provided for segmenting a speech signal.
