Method for signal processing

Details Method for signal processing Method for signal processing

1983-06-02

1987-06-09

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

046726675

ABSTRACT:
A method and apparatus for processing a signal to extract selected information therefrom is provided. According to the method, an input signal is converted into a sequence of data samples, and these data samples are applied sequentially through a convolver having first and second sections, the output of the first section forming the input of the second section. A data sample in the second convolver section is then compared to each data sample in the first convolver section to produce an output signal of a plurality of data points, each of the data points representative of a midpoint position within the convolver between a pair of compared data samples. This comparison step is repeated for each data sample in the second convolver section and the output signals form a histogram from which the selected information is extracted. This method may be advantageously utilized in a speech recognition process for extracting various features from an input speech signal.

REFERENCES:
patent: 4161033 (1979-07-01), Martinson
patent: 4388491 (1983-06-01), Ohta et al.
Flanagan, Speech Analysis Synthesis and Perception, Second Edition, Springer Verlag 1972, pp. 192-199.

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