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Richard Harry Ketchum
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Wheaton, IL, US
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last 30 patents
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Patent Grant
Robust double-talk detection and recovery in a system for echo canc...
Patent number
6,757,384
Issue date
Jun 29, 2004
Lucent Technologies Inc.
Richard Harry Ketchum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
ASR talkoff suppressor
Patent number
6,744,885
Issue date
Jun 1, 2004
Lucent Technologies Inc.
Richard Harry Ketchum
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Patent Grant
HMM-based echo model for noise cancellation avoiding the problem of...
Patent number
6,606,595
Issue date
Aug 12, 2003
Lucent Technologies Inc.
Rathinavelu Chengalvarayan
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Detection of tones while minimizing incorrect identification of oth...
Patent number
5,765,125
Issue date
Jun 9, 1998
Lucent Technologies Inc.
Jeffrey Wayne Daugherty
H04 - ELECTRIC COMMUNICATION TECHNIQUE