Ryohei Kumagai

Acoustic recognition system using accumulate power series

A recognitiion method and system for associating a pattern, such as a printed character with an acoustic signal, such as speech. A multilevel power sequence is generated from the acoustic signal, and the sequence is segmented into phonemes. The multilevel power sequence is converted into a binary level sequence to reduce noise. The binary power sequence is accumulated to give a series whose elements are partial sums of the sequence as a function of time. The accumulated sequence is differentiated to give a series whose elements are the derivatives of the accumulated sequence as a function of time. The differentiated sequence is then associated with a pattern, such as a printed character.