JP2015007794A5 - - Google Patents
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- Publication number
- JP2015007794A5 JP2015007794A5 JP2014164679A JP2014164679A JP2015007794A5 JP 2015007794 A5 JP2015007794 A5 JP 2015007794A5 JP 2014164679 A JP2014164679 A JP 2014164679A JP 2014164679 A JP2014164679 A JP 2014164679A JP 2015007794 A5 JP2015007794 A5 JP 2015007794A5
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- inverting input
- output
- resistor
- node
- 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.)
- Withdrawn
Links
- 239000003990 capacitor Substances 0.000 claims 2
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11186155.5A EP2584558B1 (en) | 2011-10-21 | 2011-10-21 | Active noise reduction |
| EP11186155.5 | 2011-10-21 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012232034A Division JP5792141B2 (ja) | 2011-10-21 | 2012-10-19 | 能動ノイズ低減 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016143043A Division JP6190501B2 (ja) | 2011-10-21 | 2016-07-21 | 能動ノイズ低減 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2015007794A JP2015007794A (ja) | 2015-01-15 |
| JP2015007794A5 true JP2015007794A5 (enExample) | 2015-08-13 |
Family
ID=45581716
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012232034A Active JP5792141B2 (ja) | 2011-10-21 | 2012-10-19 | 能動ノイズ低減 |
| JP2014164679A Withdrawn JP2015007794A (ja) | 2011-10-21 | 2014-08-13 | 能動ノイズ低減 |
| JP2016143043A Active JP6190501B2 (ja) | 2011-10-21 | 2016-07-21 | 能動ノイズ低減 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012232034A Active JP5792141B2 (ja) | 2011-10-21 | 2012-10-19 | 能動ノイズ低減 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016143043A Active JP6190501B2 (ja) | 2011-10-21 | 2016-07-21 | 能動ノイズ低減 |
Country Status (3)
| Country | Link |
|---|---|
| US (3) | US9099076B2 (enExample) |
| EP (1) | EP2584558B1 (enExample) |
| JP (3) | JP5792141B2 (enExample) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9288579B2 (en) * | 2013-01-28 | 2016-03-15 | Neofidelity, Inc. | Method for dynamically adjusting gain of parametric equalizer according to input signal, dynamic parametric equalizer and dynamic parametric equalizer system employing the same |
| EP3063951A4 (en) | 2013-10-28 | 2017-08-02 | 3M Innovative Properties Company | Adaptive frequency response, adaptive automatic level control and handling radio communications for a hearing protector |
| CN103888876B (zh) * | 2014-03-31 | 2018-05-08 | 深圳市冠旭电子股份有限公司 | 一种耳机噪音处理电路及耳机 |
| CN104661153B (zh) * | 2014-12-31 | 2018-02-02 | 歌尔股份有限公司 | 一种耳机音效补偿方法、装置及耳机 |
| EP3338279B1 (en) * | 2015-08-20 | 2024-10-02 | Cirrus Logic International Semiconductor Ltd. | Feedback adaptive noise cancellation (anc) controller and method having a feedback response partially provided by a fixed-response filter |
| EP3182406B1 (en) * | 2015-12-16 | 2020-04-01 | Harman Becker Automotive Systems GmbH | Sound reproduction with active noise control in a helmet |
| EP3185241B1 (en) * | 2015-12-23 | 2020-02-05 | Harman Becker Automotive Systems GmbH | Externally coupled loudspeaker system |
| US10778089B2 (en) * | 2017-04-07 | 2020-09-15 | Texas Instruments Incorporated | Cascaded active electro-magnetic interference filter |
| US10374510B2 (en) | 2017-04-07 | 2019-08-06 | Texas Instruments Incorporated | Compensated active electro-magnetic interference filters |
| CN109495082A (zh) * | 2018-12-29 | 2019-03-19 | 合肥惠科金扬科技有限公司 | 一种音频传输的多级匹配电路、方法及终端设备 |
| US11601045B2 (en) | 2019-04-01 | 2023-03-07 | Texas Instruments Incorporated | Active electromagnetic interference filter with damping network |
| US10770056B1 (en) | 2019-07-11 | 2020-09-08 | Harman Becker Automotive Systems Gmbh | Selective noise cancellation for a vehicle |
| US11330358B2 (en) * | 2020-08-21 | 2022-05-10 | Bose Corporation | Wearable audio device with inner microphone adaptive noise reduction |
| CN113409755B (zh) * | 2021-07-26 | 2023-10-31 | 北京安声浩朗科技有限公司 | 主动降噪方法、装置及主动降噪耳机 |
| KR20230040667A (ko) | 2021-09-16 | 2023-03-23 | 삼성전자주식회사 | 전력 관리 집적 회로를 포함하는 전자 장치 및 그 운용 방법 |
| CN115499747A (zh) * | 2022-09-16 | 2022-12-20 | 展讯通信（上海）有限公司 | 反馈滤波器系数确定方法、装置及电子设备 |
| CN118474630B (zh) * | 2024-07-09 | 2024-09-20 | 江西红声技术有限公司 | 一种基于高噪声环境主动降噪电路 |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758798Y2 (enExample) | 1978-01-25 | 1982-12-15 | ||
| JPS54110762A (en) | 1978-02-20 | 1979-08-30 | Hiromichi Watanabe | Method of forming variable active rc filter circuit |
| JPS5840935A (ja) | 1981-09-03 | 1983-03-10 | Fujitsu Ten Ltd | 高周波同調回路 |
| US4801890A (en) * | 1985-06-17 | 1989-01-31 | Dolby Ray Milton | Circuit arrangements for modifying dynamic range using variable combining techniques |
| JPH03150945A (ja) | 1989-11-07 | 1991-06-27 | Sumitomo Electric Ind Ltd | 光受信器回路 |
| WO1991010284A1 (en) | 1989-12-28 | 1991-07-11 | Meyer Sound Laboratories Incorporated | Correction circuit and method for a two-way loudspeaker system |
| JPH03274895A (ja) | 1990-03-24 | 1991-12-05 | Calsonic Corp | アクティブ・ノイズ・キャンセラー |
| JPH11305784A (ja) | 1998-04-24 | 1999-11-05 | Matsushita Electric Ind Co Ltd | 騒音制御装置 |
| CN1830141B (zh) * | 2003-07-28 | 2011-06-22 | 皇家飞利浦电子股份有限公司 | 音频调节装置和方法 |
| JP2005257720A (ja) * | 2004-03-09 | 2005-09-22 | Matsushita Electric Ind Co Ltd | 能動騒音制御装置 |
| JP5564743B2 (ja) | 2006-11-13 | 2014-08-06 | ソニー株式会社 | ノイズキャンセル用のフィルタ回路、ノイズ低減信号生成方法、およびノイズキャンセリングシステム |
| JP4983360B2 (ja) * | 2007-04-16 | 2012-07-25 | ヤマハ株式会社 | 音響特性補正システム |
| WO2009041012A1 (ja) * | 2007-09-28 | 2009-04-02 | Dimagic Co., Ltd. | ノイズ制御システム |
| GB2456501B (en) * | 2007-11-13 | 2009-12-23 | Wolfson Microelectronics Plc | Ambient noise-reduction system |
| EP2133866B1 (en) * | 2008-06-13 | 2016-02-17 | Harman Becker Automotive Systems GmbH | Adaptive noise control system |
| US8693699B2 (en) * | 2008-07-29 | 2014-04-08 | Dolby Laboratories Licensing Corporation | Method for adaptive control and equalization of electroacoustic channels |
| MY151403A (en) * | 2008-12-04 | 2014-05-30 | Sony Emcs Malaysia Sdn Bhd | Noise cancelling headphone |
| US8345888B2 (en) | 2009-04-28 | 2013-01-01 | Bose Corporation | Digital high frequency phase compensation |
| US8472637B2 (en) * | 2010-03-30 | 2013-06-25 | Bose Corporation | Variable ANR transform compression |
| US8737636B2 (en) * | 2009-07-10 | 2014-05-27 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation |
| US9818394B2 (en) * | 2009-11-30 | 2017-11-14 | Graeme Colin Fuller | Realisation of controller transfer function for active noise cancellation |
| JP5353748B2 (ja) * | 2010-02-18 | 2013-11-27 | 株式会社Ｊｖｃケンウッド | 雑音除去装置および雑音除去方法 |
| US8600069B2 (en) * | 2010-03-26 | 2013-12-03 | Ford Global Technologies, Llc | Multi-channel active noise control system with channel equalization |
| US9053697B2 (en) | 2010-06-01 | 2015-06-09 | Qualcomm Incorporated | Systems, methods, devices, apparatus, and computer program products for audio equalization |
| US8909524B2 (en) * | 2011-06-07 | 2014-12-09 | Analog Devices, Inc. | Adaptive active noise canceling for handset |
-
2011
- 2011-10-21 EP EP11186155.5A patent/EP2584558B1/en active Active
-
2012
- 2012-10-19 JP JP2012232034A patent/JP5792141B2/ja active Active
- 2012-10-19 US US13/656,274 patent/US9099076B2/en active Active
-
2014
- 2014-08-13 JP JP2014164679A patent/JP2015007794A/ja not_active Withdrawn
-
2015
- 2015-03-27 US US14/671,632 patent/US9734814B2/en active Active
-
2016
- 2016-07-21 JP JP2016143043A patent/JP6190501B2/ja active Active
-
2017
- 2017-08-14 US US15/676,157 patent/US10056066B2/en active Active
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