CN103248985B - 一种带隔离直电容的音频功放杂音抑制电路 - Google Patents
一种带隔离直电容的音频功放杂音抑制电路 Download PDFInfo
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- 230000005236 sound signal Effects 0.000 claims description 39
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105139887B (zh) * | 2015-07-28 | 2018-01-19 | 苏州宏展信息科技有限公司 | 一种基于音频处理电路的录音笔 |
CN105187963B (zh) * | 2015-09-22 | 2019-11-08 | 青岛歌尔声学科技有限公司 | 麦克风的噪音抑制电路和方法 |
CN105578354B (zh) * | 2015-12-25 | 2018-12-25 | 山东海量信息技术研究院 | 一种基于飞腾平台的扬声器降噪方法 |
CN111464917B (zh) | 2017-04-28 | 2022-04-22 | 华为技术有限公司 | 一种pop音的抑制方法、音频输出电路和终端 |
CN109729479B (zh) * | 2017-10-31 | 2021-09-21 | 华为技术有限公司 | 音频播放电路以及音频播放设备 |
CN107889024A (zh) * | 2017-11-21 | 2018-04-06 | 深圳市沃特沃德股份有限公司 | 音频电路和车载控制系统 |
CN107837450A (zh) * | 2017-11-23 | 2018-03-27 | 深圳佳莱知家科技有限公司 | 一种智能调音睡眠引导控制系统 |
CN107911776B (zh) * | 2017-11-30 | 2020-09-22 | 珠海亿智电子科技有限公司 | 一种消除音频功放上电pop声的方法 |
CN108649959B (zh) * | 2018-08-07 | 2023-10-27 | 上海艾为电子技术股份有限公司 | 一种数字模拟转换器及数字功放子系统 |
CN110430497A (zh) * | 2019-07-31 | 2019-11-08 | 深圳市睿耳电子有限公司 | 一种控制话筒静音的电路、耳机线控器及耳机 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0069843B1 (de) * | 1981-07-10 | 1985-11-13 | Deutsche Thomson-Brandt GmbH | NF-Verstärker für ein Fernsehgerät |
US7164312B1 (en) * | 2004-08-02 | 2007-01-16 | National Semiconductor Corporation | Apparatus and method for pop-and-click suppression with fast turn-on time |
CN101309071A (zh) * | 2007-05-18 | 2008-11-19 | 展讯通信(上海)有限公司 | 一种抑制音频功率放大器瞬态噪声的装置 |
CN101325401A (zh) * | 2007-06-12 | 2008-12-17 | 上海沙丘微电子有限公司 | 全差分音频功率放大器开关机噪声抑制电路 |
CN101350593A (zh) * | 2008-08-26 | 2009-01-21 | 四川登巅微电子有限公司 | 一种pop噪音抑制电路 |
CN102333268A (zh) * | 2011-07-28 | 2012-01-25 | 四川和芯微电子股份有限公司 | Pop噪声抑制电路及方法 |
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- 2012-02-03 CN CN201210024913.8A patent/CN103248985B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0069843B1 (de) * | 1981-07-10 | 1985-11-13 | Deutsche Thomson-Brandt GmbH | NF-Verstärker für ein Fernsehgerät |
US7164312B1 (en) * | 2004-08-02 | 2007-01-16 | National Semiconductor Corporation | Apparatus and method for pop-and-click suppression with fast turn-on time |
CN101309071A (zh) * | 2007-05-18 | 2008-11-19 | 展讯通信(上海)有限公司 | 一种抑制音频功率放大器瞬态噪声的装置 |
CN101325401A (zh) * | 2007-06-12 | 2008-12-17 | 上海沙丘微电子有限公司 | 全差分音频功率放大器开关机噪声抑制电路 |
CN101350593A (zh) * | 2008-08-26 | 2009-01-21 | 四川登巅微电子有限公司 | 一种pop噪音抑制电路 |
CN102333268A (zh) * | 2011-07-28 | 2012-01-25 | 四川和芯微电子股份有限公司 | Pop噪声抑制电路及方法 |
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Denomination of invention: Noise-suppression circuit provided with blocking capacitor of audio amplifier Effective date of registration: 20171102 Granted publication date: 20151209 Pledgee: China Co truction Bank Corp Guangzhou economic and Technological Development Zone sub branch Pledgor: Anyka (Guangzhou) Microelectronics Technology Co., Ltd. Registration number: 2017990001008 |
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Denomination of invention: Noise-suppression circuit provided with blocking capacitor of audio amplifier Effective date of registration: 20190130 Granted publication date: 20151209 Pledgee: China Co truction Bank Corp Guangzhou economic and Technological Development Zone sub branch Pledgor: Anyka (Guangzhou) Microelectronics Technology Co., Ltd. Registration number: 2019440000051 |
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