Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1988-02-22
1990-07-17
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
3645135, G10L 500
Patent
active
049426087
ABSTRACT:
A pattern recognition apparatus is constituted by a feature data extraction section, a RAM for storing feature data, a memory for storing standard pattern data, an arithmetic section for performing a similarity measurement calculation between input pattern data and the standard pattern data, based on a multiple similarity method, and a controller for recognizing an input signal, based on the calculation result from the arithmetic section. The arithmetic section is constituted by: a bus, a first multiplexer for selecting any of the feature data, data on the data bus, and a constant, a second multiplexer for selecting any of the feature data, the standard pattern data, and data on the data bus, first and second registers for storing output data from the first multiplexer and from the second multiplexer, respectively, a partial product generator for generating partial products of the data stored in the first and second registers, a shifter for shifting the partial products by a predetermined number of bits, a digital adder for adding the output data from the shifter to other data, and outputting the addition result onto the data bus, a third register for storing the output data from the adder, and a third multiplexer for selecting one of the data stored in the third register and output data of the adder, and supplying the data selected, as the other data, to the adder, for the adder to perform an accumulation operation.
REFERENCES:
patent: 3688267 (1972-08-01), Iijima et al.
patent: 4752957 (1988-06-01), Maeda
patent: 4783806 (1988-11-01), Nakamura et al.
Kabushiki Kaisha Toshiba
Kemeny Emanuel S.
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