CN113746994B - 一种轨道交通用抗啸叫自动增益调节的手咪电路实现方法 - Google Patents
一种轨道交通用抗啸叫自动增益调节的手咪电路实现方法 Download PDFInfo
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- CN113746994B CN113746994B CN202111302940.2A CN202111302940A CN113746994B CN 113746994 B CN113746994 B CN 113746994B CN 202111302940 A CN202111302940 A CN 202111302940A CN 113746994 B CN113746994 B CN 113746994B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000010363 phase shift Effects 0.000 claims abstract description 15
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 78
- 230000005236 sound signal Effects 0.000 claims description 33
- 238000001914 filtration Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000000670 limiting effect Effects 0.000 abstract description 2
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000001629 suppression Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202111302940.2A CN113746994B (zh) | 2021-11-05 | 2021-11-05 | 一种轨道交通用抗啸叫自动增益调节的手咪电路实现方法 |
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CN202111302940.2A CN113746994B (zh) | 2021-11-05 | 2021-11-05 | 一种轨道交通用抗啸叫自动增益调节的手咪电路实现方法 |
Publications (2)
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CN113746994A CN113746994A (zh) | 2021-12-03 |
CN113746994B true CN113746994B (zh) | 2022-04-08 |
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CN202111302940.2A Active CN113746994B (zh) | 2021-11-05 | 2021-11-05 | 一种轨道交通用抗啸叫自动增益调节的手咪电路实现方法 |
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CN (1) | CN113746994B (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204103872U (zh) * | 2014-10-27 | 2015-01-14 | 南京铁道职业技术学院 | 一种带啸叫抑制功能的音频功率放大装置 |
CN104410941A (zh) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | 基于移相处理的自增益宽范围音频处理系统 |
CN104768104A (zh) * | 2015-02-09 | 2015-07-08 | 江苏海湾电气科技有限公司 | 船用抗环境噪声和防啸叫话筒电路 |
CN105142068A (zh) * | 2015-07-29 | 2015-12-09 | 合肥赛为智能有限公司 | 一种对讲系统中麦克风啸叫抑制电路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1157875C (zh) * | 1999-11-24 | 2004-07-14 | 赵锦伟 | 无线传声发射设备的音频信号预处理装置 |
CN112118501A (zh) * | 2020-09-15 | 2020-12-22 | 陕西宝成航空仪表有限责任公司 | 具有啸叫抑制功能的机载话筒麦克风信号放大电路 |
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2021
- 2021-11-05 CN CN202111302940.2A patent/CN113746994B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204103872U (zh) * | 2014-10-27 | 2015-01-14 | 南京铁道职业技术学院 | 一种带啸叫抑制功能的音频功率放大装置 |
CN104410941A (zh) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | 基于移相处理的自增益宽范围音频处理系统 |
CN104768104A (zh) * | 2015-02-09 | 2015-07-08 | 江苏海湾电气科技有限公司 | 船用抗环境噪声和防啸叫话筒电路 |
CN105142068A (zh) * | 2015-07-29 | 2015-12-09 | 合肥赛为智能有限公司 | 一种对讲系统中麦克风啸叫抑制电路 |
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CN113746994A (zh) | 2021-12-03 |
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Inventor after: Yang Shuai Inventor after: Dong Guojun Inventor after: Wang Wei Inventor after: Shi Bingchen Inventor after: Liu Guoqing Inventor after: Zhang Qingping Inventor after: Zheng Caishun Inventor after: Liu Jiaxi Inventor after: Hu Lin Inventor before: Yang Shuai Inventor before: Dong Guojun Inventor before: Wang Wei Inventor before: Shi Bingchen Inventor before: Liu Guoqing Inventor before: Zhang Qingping Inventor before: Zheng Caixia Inventor before: Liu Jiaxi Inventor before: Hu Lin |
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Address after: 300456 room 506-11, building 1, Rongsheng Plaza, Binhai Zhongguancun Science Park, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee after: TIANJIN 712 MOBILE COMMUNICATIONS Co.,Ltd. Address before: 300140 No. 185, new great road, Tianjin, Hebei District Patentee before: TIANJIN 712 MOBILE COMMUNICATIONS Co.,Ltd. |
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Address after: 300456 room 506-11, building 1, Rongsheng Plaza, Binhai Zhongguancun Science Park, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee after: Tianjin 712 Mobile Communication Co.,Ltd. Country or region after: China Address before: 300456 room 506-11, building 1, Rongsheng Plaza, Binhai Zhongguancun Science Park, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: TIANJIN 712 MOBILE COMMUNICATIONS Co.,Ltd. Country or region before: China |