JPS6420767A - Voice switch device - Google Patents
Voice switch deviceInfo
- Publication number
- JPS6420767A JPS6420767A JP62177422A JP17742287A JPS6420767A JP S6420767 A JPS6420767 A JP S6420767A JP 62177422 A JP62177422 A JP 62177422A JP 17742287 A JP17742287 A JP 17742287A JP S6420767 A JPS6420767 A JP S6420767A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- input signal
- voice detection
- detection circuit
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To increase the suppressing sense of noise with less speech head and speech tail cutoff by providing a filter circuit subjected to insertion and deinsertion control by a voice detection circuit and a switching citcuit. CONSTITUTION:A voice detection circuit 11 detecting the presence of a voice from an input signal, a filter circuit 12 providing the frequency characteristic to the input signal and a switching citcuit 13 outputting an input signal when the voice detection circuit 11 decides it to be sound and outputting an output signal of the filter circuit 12 when the circuit 11 decides to be silent are provided. Thus, when the voice detection circuit 11 detects the silence period of the input signal, the switching circuit 13 applies control to output the output signal of the filter circuit 12, then speech head and tail cutoff is less and the noise suppressing effect is large.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62177422A JPS6420767A (en) | 1987-07-16 | 1987-07-16 | Voice switch device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62177422A JPS6420767A (en) | 1987-07-16 | 1987-07-16 | Voice switch device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6420767A true JPS6420767A (en) | 1989-01-24 |
Family
ID=16030651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62177422A Pending JPS6420767A (en) | 1987-07-16 | 1987-07-16 | Voice switch device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6420767A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5034871A (en) * | 1989-03-28 | 1991-07-23 | Matsushita Electric Works, Ltd. | DC to DC converter with steady control of output DC voltage by monitoring output DC current |
US5323457A (en) * | 1991-01-18 | 1994-06-21 | Nec Corporation | Circuit for suppressing white noise in received voice |
EP0615397A2 (en) * | 1993-03-11 | 1994-09-14 | Nec Corporation | Noise suppression circuit for radio transceiver microphone |
US5559880A (en) * | 1993-01-19 | 1996-09-24 | Mitsubishi Denki Kabushiki Kaisha | Circuit for hands free talking |
JP2007006410A (en) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | Interphone system for multiple dwelling house |
JP2009182594A (en) * | 2008-01-30 | 2009-08-13 | Aiphone Co Ltd | Intercom system |
-
1987
- 1987-07-16 JP JP62177422A patent/JPS6420767A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5034871A (en) * | 1989-03-28 | 1991-07-23 | Matsushita Electric Works, Ltd. | DC to DC converter with steady control of output DC voltage by monitoring output DC current |
US5323457A (en) * | 1991-01-18 | 1994-06-21 | Nec Corporation | Circuit for suppressing white noise in received voice |
US5559880A (en) * | 1993-01-19 | 1996-09-24 | Mitsubishi Denki Kabushiki Kaisha | Circuit for hands free talking |
EP0615397A2 (en) * | 1993-03-11 | 1994-09-14 | Nec Corporation | Noise suppression circuit for radio transceiver microphone |
EP0615397A3 (en) * | 1993-03-11 | 1994-10-19 | Nec Corp | Noise suppression circuit for radio transceiver microphone. |
JP2007006410A (en) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Works Ltd | Interphone system for multiple dwelling house |
JP2009182594A (en) * | 2008-01-30 | 2009-08-13 | Aiphone Co Ltd | Intercom system |
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