Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1982-06-14
1985-04-02
Shaw, Gareth D.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
364200, 3645135, G06K 964, G10L 100
Patent
active
045091870
ABSTRACT:
In known speech recognition systems, processors and methods, utterances are analyzed to obtain a set of reference signals. An unknown signal may be compared with the reference signals. The unknown signal may be said to be the reference signal with which it most closely corresponds as defined by some correspondence measure. Known signal recognition arrangements using multiple processor cells tend to be expensive, in part because they tend to use many processor cells.
The disclosed system, processor and method contemplate an arrangement including an array of processor cells for time warping an unknown signal having m elements with respect to a reference signal having n elements or vice versa. The cells, responsive to control signals on a control diagonal, generate the correspondence measure. As the signals propagate through the array, the instant arrangement recirculates signals from cells near one (or first) periphery of the arrangement, e.g., from the right periphery, to cells near another (or second) periphery, e.g., to the left periphery. As a result, rather than using m.times.n processor cells, the instant arrangement may use substantially less than m.times.n cells.
REFERENCES:
patent: 3473160 (1969-10-01), Wahlstrom
patent: 4174514 (1979-11-01), Sternberg
patent: 4181821 (1980-01-01), Pirz et al.
patent: 4384273 (1983-05-01), Ackland et al.
First International Joint Conference on Pattern Recognition, 10/30/73-11/1/83, Wash. D.C.
Proceedings of the Caltech Conference on VLSI, 1/22/79-1/24/79, Calif. Institute of Technology.
Ackland Bryan D.
Burr David J.
Weste Neil H. E.
AT&T Bell Laboratories
Demetry Paul M.
Roddy Richard J.
Shaw Gareth D.
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