Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Reexamination Certificate
2006-09-13
2011-10-11
Dorvil, Richemond (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
C704S231000, C704S246000, C704S238000, C700S245000
Reexamination Certificate
active
08036888
ABSTRACT:
A sound input from sound sources existing in a plurality of directions is accepted and converted into a signal on a frequency axis. A suppressing function to suppress the converted signal on a frequency axis is computed, an amplitude component of a signal on a frequency axis is multiplied by the computed suppressing function and the converted signal on a frequency axis is corrected. A phase component of each converted signal on a frequency axis is computed for each frequency and a difference of phase components is computed. A probability value indicative of probability of existence of a sound source in a predetermined direction is specified based on the computed difference and a suppressing function to suppress a sound input from a sound source other than a sound source in a predetermined direction is computed based on the specified probability value.
REFERENCES:
patent: 5335312 (1994-08-01), Mekata et al.
patent: 5539859 (1996-07-01), Robbe et al.
patent: 5574824 (1996-11-01), Slyh et al.
patent: 6009396 (1999-12-01), Nagata
patent: 6130949 (2000-10-01), Aoki et al.
patent: 6707910 (2004-03-01), Valve et al.
patent: 7031474 (2006-04-01), Yuen et al.
patent: 7039199 (2006-05-01), Rui
patent: 7209567 (2007-04-01), Kozel et al.
patent: 7415117 (2008-08-01), Tashev et al.
patent: 7454332 (2008-11-01), Koishida et al.
patent: 7454335 (2008-11-01), Gao et al.
patent: 2007/0003074 (2007-01-01), Ruwisch
patent: 697 13 647 (1997-09-01), None
patent: 697 32 329 (2005-01-01), None
patent: 0 901 267 (1999-03-01), None
patent: 1065909 (2001-01-01), None
patent: 5-22787 (1993-01-01), None
patent: 6-204771 (1994-07-01), None
patent: 10-313497 (1998-11-01), None
patent: 2001-45592 (2001-02-01), None
patent: 2001-166025 (2001-06-01), None
Communication from German Patent Office dated May 31, 2007 with English translation (5 pages).
Thomas M. Sulllivan: “Multi-Microphone Correlation-Based Processing for Robust Automatic Speech Recognition,” Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, Aug. 1996 (pp. 1-113).
Office Action dated May 10, 2011 corresponding to Japanese Patent Application No. 2006-147043 with English translation and Certification of translation.
Dorvil Richemond
Fujitsu Limited
Kratz Quintos & Hanson, LLP
Villena Mark
LandOfFree
Collecting sound device with directionality, collecting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Collecting sound device with directionality, collecting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collecting sound device with directionality, collecting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4282919