Selectively activated dual tone multi-frequency detector
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United States of America Patent
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Oct 17, 1995
Grant Date -
N/A
app pub date -
Jan 12, 1994
filing date -
Jan 12, 1994
priority date (Note) -
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Abstract
A technique for improved DTMF detection utilizes a speech detector, either alone or in combination with other information from a voice processing arrangement, to adjust the sensitivity of the DTMF detector. The DTMF detector is turned completely off when the voice processing application is in the record mode, and when speech is detected.
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