G - Physics – 10 – L
Patent
G - Physics
10
L
354/47
G10L 15/00 (2006.01)
Patent
CA 1334689
A circuit for pattern matching on the frequency axis comprises a first transformation section having an adaptive filter generally identical to an adaptive finite impulse response filter with its delay elements having been replaced by all-pass filters, for performing frequency transformation on input pattern data from said memory means, a second transformation section having an adaptive filter generally identical to an adaptive finite impulse response filter with its delay elements having been replaced by all-pass filters, for performing frequency transformation on reference pattern data from the memory, and a control section for calculating a distance between the output data from the first transformation section and the second transformation section, controlling parameters of filters of at least one of the first and second transformation sections so as to minimize this distance, and generating a pattern matching residual output on the frequency axis based on the minimum distance.
565459
Ando Hiromi
Fukasawa Atsushi
Sato Shinichi
Sato Takura
Suzuki Yukio
Fetherstonhaugh & Co.
Oki Electric Industry Co. Ltd.
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