Extraction of speech parameters using a model of the human auditory system

A method for reducing the effect of interference on the spectrum of voiced speech sounds is described. The method divides the spectrum into a number of frequency regions and then uses the strength of voicing in each region as a measure of signal strength in that region. This approach is particularly suited to cases where the interference is made up of one or more sinusoidal waves. The output from the proposed system was also used to control a speech synthesizer. Informal listening tests showed that the speech produced was understandable, although it sounded metallic and machine-like due to the nature of the excitation signal that was used