Boots – shoes – and leggings
Patent
1987-08-13
1989-01-03
Harkcom, Gary V.
Boots, shoes, and leggings
381 51, G06F 738, G10L 502
Patent
active
047962160
ABSTRACT:
A digital filter for synthesized speech includes a full adder (72) that is multiplexed to perform multiplication and addition/subtraction operations. The inputs of the adder (72) are multiplexed by multiplexers (90) and (92). The adder (72) calculates Y-values and B-values. The B-values are input to a delay stack (116) and the Y-values are stored in a Y-register (78). One product is generated of a multiplier stored in a K-stack (128) and a multiplicand selected by a multiplexer (122). The multiplicand is a prestored summation that was earlier stored in a sum register (82). This product is stored in an ACC register (74) and utilized in both the calculation of the B-values and the Y-values. Therefore, only one multiplication is required for corresponding Y- and B-values, thereby reducing the number of multiplication steps required in processing each stage of a digital filter.
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Morton Alec J.
Renner Karl H.
Harkcom Gary V.
Hiller William E.
Merrett N. Rhys
Sharp Melvin
Shaw Dale M.
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