H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/40 (2006.01) G10L 11/02 (2006.01)
Patent
CA 2053124
A speech detection circuit includes an amplifier for amplifying an input audio signal and having a variable gain, a rectifying circuit for rectifying an output signal of the amplifier, a comparator for comparing an output signal level of the rectifying circuit with a reference level, and a control circuit for outputting a control signal based on an output signal of the comparator. The control circuit outputs a control signal which indicates a power save mode after a predetermined time elapses from a time when the output signal level of the rectifying circuit becomes less than or equal to the reference level, and outputs a control signal which indicates a normal mode immediately when the output signal level of the rectifying circuit becomes greater than the reference level. The amplifier receives the control signal output from the control circuit and reduces its gain when the control signal indicates the power save mode.
Aota Masahiro
Ibuka Toshihiro
Komatsu Noriyoshi
Komatsuda Seiji
Matsumoto Yoshihiro
Fetherstonhaugh & Co.
Fujitsu Limited
LandOfFree
Speech detection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Speech detection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech detection circuit will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2050834