CN105530585B - 扬声器的直流阻抗检测方法及电路 - Google Patents
扬声器的直流阻抗检测方法及电路 Download PDFInfo
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- CN105530585B CN105530585B CN201510863596.2A CN201510863596A CN105530585B CN 105530585 B CN105530585 B CN 105530585B CN 201510863596 A CN201510863596 A CN 201510863596A CN 105530585 B CN105530585 B CN 105530585B
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- loud speaker
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- 238000001514 detection method Methods 0.000 title claims abstract description 53
- 230000010354 integration Effects 0.000 claims abstract description 150
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims description 35
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 12
- 238000012512 characterization method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000011897 real-time detection Methods 0.000 abstract description 4
- 239000013256 coordination polymer Substances 0.000 description 11
- 230000005611 electricity Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000005534 hematocrit Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 description 2
- 101150102866 adc1 gene Proteins 0.000 description 2
- 101150042711 adc2 gene Proteins 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
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Classifications
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0023—Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/14—Measuring resistance by measuring current or voltage obtained from a reference source
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (15)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510863596.2A CN105530585B (zh) | 2015-01-19 | 2015-11-30 | 扬声器的直流阻抗检测方法及电路 |
TW105100294A TWI605722B (zh) | 2015-01-19 | 2016-01-06 | 揚聲器的直流阻抗檢測方法及電路 |
US14/997,699 US9716954B2 (en) | 2015-01-19 | 2016-01-18 | DC impedance detection circuit and method for speaker |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510025308.6A CN104640053A (zh) | 2015-01-19 | 2015-01-19 | 扬声器的直流阻抗检测方法、电路以及d类音频放大器 |
CN2015100253086 | 2015-01-19 | ||
CN201510863596.2A CN105530585B (zh) | 2015-01-19 | 2015-11-30 | 扬声器的直流阻抗检测方法及电路 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105530585A CN105530585A (zh) | 2016-04-27 |
CN105530585B true CN105530585B (zh) | 2018-10-23 |
Family
ID=53218269
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510025308.6A Pending CN104640053A (zh) | 2015-01-19 | 2015-01-19 | 扬声器的直流阻抗检测方法、电路以及d类音频放大器 |
CN201510863596.2A Active CN105530585B (zh) | 2015-01-19 | 2015-11-30 | 扬声器的直流阻抗检测方法及电路 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510025308.6A Pending CN104640053A (zh) | 2015-01-19 | 2015-01-19 | 扬声器的直流阻抗检测方法、电路以及d类音频放大器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9716954B2 (zh) |
CN (2) | CN104640053A (zh) |
TW (1) | TWI605722B (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105048980B (zh) | 2015-08-18 | 2018-09-18 | 矽力杰半导体技术(杭州)有限公司 | 一种d类音频放大器 |
CN108605183B (zh) | 2016-01-29 | 2020-09-22 | 杜比实验室特许公司 | 具有功率共享、传信和多相电源的多通道电影院放大器 |
CN106454679B (zh) * | 2016-11-17 | 2019-05-21 | 矽力杰半导体技术(杭州)有限公司 | 扬声器振膜状态估计方法及应用其的扬声器驱动电路 |
CN106341763B (zh) | 2016-11-17 | 2019-07-30 | 矽力杰半导体技术(杭州)有限公司 | 扬声器驱动装置和扬声器驱动方法 |
CN106658295B (zh) * | 2017-01-20 | 2019-02-15 | 深圳市中移联半导体科技有限公司 | 一种扬声器直流电压检测电路 |
CN110062315B (zh) * | 2019-04-24 | 2020-12-22 | 深圳康佳电子科技有限公司 | 一种阻抗自适应功放电路及扬声器 |
CN111077360B (zh) * | 2019-12-05 | 2022-08-23 | 湖南一二三智能科技有限公司 | 一种目标电阻带电测量方法、装置及相关组件 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101102095A (zh) * | 2006-07-07 | 2008-01-09 | 雅马哈株式会社 | 偏移电压校正电路和d类放大器 |
CN102435850A (zh) * | 2010-09-03 | 2012-05-02 | Ls产电株式会社 | 电能管理系统 |
CN103257277A (zh) * | 2013-05-28 | 2013-08-21 | 天津天狮学院 | 基于恒流源的多功能虚拟仪器及控制方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI221196B (en) | 2001-09-06 | 2004-09-21 | Tokyo Electron Ltd | Impedance measuring circuit, its method, and electrostatic capacitance measuring circuit |
US7078964B2 (en) * | 2003-10-15 | 2006-07-18 | Texas Instruments Incorporated | Detection of DC output levels from a class D amplifier |
KR100812760B1 (ko) * | 2005-12-08 | 2008-03-12 | 김득수 | 축전지 내부 임피던스 유효성분 측정연산 장치 및 그 방법 |
JP2011242370A (ja) | 2010-05-21 | 2011-12-01 | Renesas Electronics Corp | インピーダンス検出回路及びインピーダンス検出回路の調整方法 |
EP2398253A1 (en) * | 2010-06-16 | 2011-12-21 | Nxp B.V. | Control of a loudspeaker output |
-
2015
- 2015-01-19 CN CN201510025308.6A patent/CN104640053A/zh active Pending
- 2015-11-30 CN CN201510863596.2A patent/CN105530585B/zh active Active
-
2016
- 2016-01-06 TW TW105100294A patent/TWI605722B/zh active
- 2016-01-18 US US14/997,699 patent/US9716954B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101102095A (zh) * | 2006-07-07 | 2008-01-09 | 雅马哈株式会社 | 偏移电压校正电路和d类放大器 |
CN102435850A (zh) * | 2010-09-03 | 2012-05-02 | Ls产电株式会社 | 电能管理系统 |
CN103257277A (zh) * | 2013-05-28 | 2013-08-21 | 天津天狮学院 | 基于恒流源的多功能虚拟仪器及控制方法 |
Also Published As
Publication number | Publication date |
---|---|
CN105530585A (zh) | 2016-04-27 |
US9716954B2 (en) | 2017-07-25 |
CN104640053A (zh) | 2015-05-20 |
US20160212556A1 (en) | 2016-07-21 |
TW201637463A (zh) | 2016-10-16 |
TWI605722B (zh) | 2017-11-11 |
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Address after: 310051 No. 6 Lianhui Street, Xixing Street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Silergy Semiconductor Technology (Hangzhou ) Co., Ltd. Address before: 310012 Wensanlu Road, Hangzhou Province, No. 90 East Software Park, science and technology building A1501 Patentee before: Silergy Semiconductor Technology (Hangzhou ) Co., Ltd. |
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Effective date of registration: 20200309 Address after: 210042 302, Xuanwu Road, 7, Xuanwu Road, Xuanwu District, Nanjing, Jiangsu, China, 7 Patentee after: Silergy Semiconductor Technology (Hangzhou) Ltd. Address before: 310051 No. 6 Lianhui Street, Xixing Street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Silergy Semiconductor Technology (Hangzhou) Ltd. |
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Address after: 210042 302, Xuanwu Road, 7, Xuanwu Road, Xuanwu District, Nanjing, Jiangsu, China, 7 Patentee after: Nanjing Sili Microelectronics Technology Co., Ltd Address before: 210042 302, Xuanwu Road, 7, Xuanwu Road, Xuanwu District, Nanjing, Jiangsu, China, 7 Patentee before: Silergy Semiconductor Technology (Hangzhou) Ltd. |
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