Tone recognition method using tone learning operation in an auto

Details Tone recognition method using tone learning operation in an auto Tone recognition method using tone learning operation in an auto

1996-02-01

1997-06-24

Brown, Thomas W.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 81, 379257, 379386, H04M 124, H04M 165

Patent

active

056424060

ABSTRACT:
The present invention provides an automatic answering system that, upon being provided with operating power, uses a tone pattern learning operation to identify an applicable busy tone pattern. After the applicable busy tone pattern is identified, when a calling party records a message on a recording medium of the system, the system performs a detection mode subroutine corresponding to the identified busy tone pattern and detects the busy tone in a rapid and accurate manner. As a result, unnecessary use of the recording medium is eliminated.

REFERENCES:
patent: 4694482 (1987-09-01), Reesor et al.
patent: 4935958 (1990-06-01), Morganstein et al.
patent: 5406621 (1995-04-01), Binal
patent: 5416836 (1995-05-01), Marinelli et al.
patent: 5463670 (1995-10-01), Chiang et al.
patent: 5479501 (1995-12-01), Lai

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