Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Reexamination Certificate
2006-12-05
2006-12-05
Harper, V. Paul (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
C704S214000, C704S226000
Reexamination Certificate
active
07146314
ABSTRACT:
Data handling dynamically responds to changing noise power conditions to separate valid data from noise. A reference power level acts as a threshold between dynamically assumed noise and valid data, and dynamically refers to the reference power level changing adaptively with the background noise. The introduction of dynamic noise control in VOX (Voice Activated Transmission) improves a VOX device operation in a noisy environment, even when the background noise profiles are changing. Processing is on a frame by frame basis for successive frames. The threshold is adaptively changed when a comparison of frame signal power to the threshold indicates speech or the absence of speech in the compared frame repeatedly and continuously for a period of time involving plural successive frames having no valid speech or noise above the threshold to correspondingly reduce or increase the threshold by changing the threshold to a value that is a function of the input signal power.
REFERENCES:
patent: 4277645 (1981-07-01), May, Jr.
patent: 4357491 (1982-11-01), Daaboul
patent: 4410763 (1983-10-01), Strawczynski et al.
patent: 4700392 (1987-10-01), Kato et al.
patent: 4712235 (1987-12-01), Jones
patent: 4829578 (1989-05-01), Roberts
patent: 5152007 (1992-09-01), Uribe
patent: 5276765 (1994-01-01), Freeman et al.
patent: 5907823 (1999-05-01), Sjoberg et al.
patent: 5991718 (1999-11-01), Malah
patent: 6154721 (2000-11-01), Sonnic
patent: 6275794 (2001-08-01), Benyassine et al.
patent: 6381568 (2002-04-01), Supplee et al.
patent: 6381570 (2002-04-01), Li et al.
patent: 2002/0021798 (2002-02-01), Terada et al.
patent: 2002/0041678 (2002-04-01), Basburg-Ertem et al.
patent: 2004/0125962 (2004-07-01), Christoph
Harper V. Paul
Renesas Technology Corporation
Squire Sanders & Dempsey L.L.P.
LandOfFree
Dynamic adjustment of noise separation in data handling,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic adjustment of noise separation in data handling,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic adjustment of noise separation in data handling,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3686736