Correlation function computing device

Details Correlation function computing device Correlation function computing device

1986-11-24

1988-10-04

Harkcom, Gary V.

Boots, shoes, and leggings

381 38, 381 49, G06F 15336, G10L 702, G10L 900

Patent

active

047759518

ABSTRACT:
A correlation function computing device capable of computing a selfcorrelation function or the like is constructed to comprise a window function memorizing circuit, an A/D converting circuit for converting time series of a voice signal into digital values, a multiplier for calculating products of the window functions and the digitalized time series of the voice signal and also products required for the computation of the correlation function, a memory circuit for storing the products of the window functions and the digitalized time series of the voice signal delivered from the multiplier, a selector circuit for transferring data supplied to the multiplier, an adder for obtaining a product-sum in a divided manner, a memory circuit of a first-in and first-out type for storing the product-sum dividedly obtained in the adder, and a control circuit for controlling all of the aforementioned circuits.

REFERENCES:
patent: 3706929 (1972-12-01), Robinson et al.
patent: 3819920 (1974-06-01), Goldfischer
patent: 4063082 (1977-12-01), Nussbaumer
patent: 4071899 (1978-01-01), Holy
patent: 4282405 (1981-08-01), Taguchi

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