Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-09-29
1990-02-20
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 43, G10L 708
Patent
active
049033069
ABSTRACT:
A voice pattern in the form of a matrix and comprised of a plurality of frames, each including time-spectral information and temporal information, is formed from an unknown input voice signal. The voice pattern is compared with each of the voice patterns of a library of known voices partly to select a plurality of candidate voices. Each of the library voices has a predetermined eigenvector and an inner product frequency distribution of inner products between the eigenvector and the frames of its voice pattern. Then, inner products between the voice pattern of the input voice signal and the eigenvector of each of the candidate library voice are calculated. One of the plurality of candidate library voices whose predetermined inner product frequency distribution is most similar to one of the thus calculated inner product frequency distributions is selected to identify the input voice signal.
REFERENCES:
patent: 4363102 (1982-12-01), Holmgren et al.
patent: 4403114 (1983-09-01), Sakoe
patent: 4715004 (1987-12-01), Kabasawa et al.
patent: 4720863 (1988-01-01), Li et al.
patent: 4752957 (1988-06-01), Maeda
Harkcom Gary V.
Merecki John A.
Ricoh & Company, Ltd.
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