Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1989-05-25
1990-04-17
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 46, G10L 708
Patent
active
049187325
ABSTRACT:
A method and arrangement for a speech recognition system employs channel bank information to represent speech. The method considers background noise included with the speech. The method includes determining three energy levels for each channel the first representative of background noise energy, the second representative of the input frame energy and the third representative of the word template frame energy. Values representing energy level differentials are assigned at each channel. If the second energy level is less than the first energy level, then a predetermined constant value is assigned at the particular channel. These values are combined to generate a distance measure depicting the similarity between the two frames.
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Gerson Ira A.
Lindsley Brett L.
Hackbart Rolland R.
Harkcom Gary V.
Jenski Raymond A.
Merecki John A.
Motorola Inc.
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