DE602004031044D1 - Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln - Google Patents
Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmittelnInfo
- Publication number
- DE602004031044D1 DE602004031044D1 DE602004031044T DE602004031044T DE602004031044D1 DE 602004031044 D1 DE602004031044 D1 DE 602004031044D1 DE 602004031044 T DE602004031044 T DE 602004031044T DE 602004031044 T DE602004031044 T DE 602004031044T DE 602004031044 D1 DE602004031044 D1 DE 602004031044D1
- Authority
- DE
- Germany
- Prior art keywords
- microphone
- bit
- improvers
- digital
- level quantizer
- 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.)
- Active
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/04—Structural association of microphone with electric circuitry therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
- H03M7/3035—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with provisions for rendering the modulator inherently stable, e.g. by restricting the swing within the loop, by removing part of the zeroes using local feedback loops, by positioning zeroes outside the unit circle causing the modulator to operate in a chaotic regime
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52503903P | 2003-11-24 | 2003-11-24 | |
PCT/DK2004/000680 WO2005009072A2 (en) | 2003-11-24 | 2004-10-08 | Microphone comprising integral multi-level quantizer and single-bit conversion means |
Publications (1)
Publication Number | Publication Date |
---|---|
DE602004031044D1 true DE602004031044D1 (de) | 2011-02-24 |
Family
ID=34079506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE602004031044T Active DE602004031044D1 (de) | 2003-11-24 | 2004-10-08 | Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln |
Country Status (6)
Country | Link |
---|---|
US (1) | US7630504B2 (de) |
EP (1) | EP1690437B1 (de) |
CN (1) | CN1879446B (de) |
AT (1) | ATE495625T1 (de) |
DE (1) | DE602004031044D1 (de) |
WO (1) | WO2005009072A2 (de) |
Families Citing this family (54)
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EP1690437B1 (de) * | 2003-11-24 | 2011-01-12 | Epcos Pte Ltd | Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln |
US9774961B2 (en) | 2005-06-05 | 2017-09-26 | Starkey Laboratories, Inc. | Hearing assistance device ear-to-ear communication using an intermediate device |
US8041066B2 (en) | 2007-01-03 | 2011-10-18 | Starkey Laboratories, Inc. | Wireless system for hearing communication devices providing wireless stereo reception modes |
EP1908330A2 (de) * | 2005-07-19 | 2008-04-09 | Audioasics A/S | Programmierbares mikrofon |
DE202006002942U1 (de) * | 2006-02-22 | 2007-07-05 | Brauner, Dirk | Adapter für Mikrofone |
GB2446966B (en) | 2006-04-12 | 2010-07-07 | Wolfson Microelectronics Plc | Digital circuit arrangements for ambient noise-reduction |
CN101467116B (zh) * | 2006-06-15 | 2010-10-13 | Nxp股份有限公司 | 为处理器提供时钟频率的方法及电子设备 |
US8208642B2 (en) | 2006-07-10 | 2012-06-26 | Starkey Laboratories, Inc. | Method and apparatus for a binaural hearing assistance system using monaural audio signals |
US8542850B2 (en) * | 2007-09-12 | 2013-09-24 | Epcos Pte Ltd | Miniature microphone assembly with hydrophobic surface coating |
DE102007058951B4 (de) * | 2007-12-07 | 2020-03-26 | Snaptrack, Inc. | MEMS Package |
US7889108B2 (en) * | 2008-05-09 | 2011-02-15 | Asahi Kasei Microdevices Corporation | Hybrid delta-sigma ADC |
US8411603B2 (en) * | 2008-06-19 | 2013-04-02 | Broadcom Corporation | Method and system for dual digital microphone processing in an audio CODEC |
WO2010063660A2 (en) * | 2008-12-05 | 2010-06-10 | Audioasics A/S | Wind noise detection method and system |
KR101201198B1 (ko) * | 2008-12-16 | 2012-11-15 | 한국전자통신연구원 | 신호를 증폭하는 장치 및 방법, 이를 이용한 무선 송신 장치 |
US8345888B2 (en) * | 2009-04-28 | 2013-01-01 | Bose Corporation | Digital high frequency phase compensation |
US8085946B2 (en) * | 2009-04-28 | 2011-12-27 | Bose Corporation | ANR analysis side-chain data support |
US9083288B2 (en) * | 2009-06-11 | 2015-07-14 | Invensense, Inc. | High level capable audio amplification circuit |
CN101924525B (zh) * | 2009-06-11 | 2016-06-22 | 应美盛股份有限公司 | 高性能音频放大电路 |
US8737653B2 (en) | 2009-12-30 | 2014-05-27 | Starkey Laboratories, Inc. | Noise reduction system for hearing assistance devices |
DE102010006132B4 (de) | 2010-01-29 | 2013-05-08 | Epcos Ag | Miniaturisiertes elektrisches Bauelement mit einem Stapel aus einem MEMS und einem ASIC |
US20130129117A1 (en) * | 2011-11-21 | 2013-05-23 | Henrik Thomsen | Audio amplification circuit |
CN103138687B (zh) * | 2011-11-22 | 2017-04-12 | 应美盛股份有限公司 | 能处理高电平的音频放大电路中的失真抑制 |
EP2608569B1 (de) * | 2011-12-22 | 2014-07-23 | ST-Ericsson SA | Digitalmikrofonvorrichtung mit erweitertem dynamischen Bereich |
US9467774B2 (en) * | 2012-02-10 | 2016-10-11 | Infineon Technologies Ag | System and method for a PCM interface for a capacitive signal source |
US9673767B2 (en) * | 2012-08-10 | 2017-06-06 | Tdk Corporation | MEMS microphone and method of operating the MEMS microphone |
US9374646B2 (en) * | 2012-08-31 | 2016-06-21 | Starkey Laboratories, Inc. | Binaural enhancement of tone language for hearing assistance devices |
US9332345B1 (en) * | 2013-04-09 | 2016-05-03 | Cirrus Logic, Inc. | Use of microphone capacitance as a switched capacitor in an input network of a delta-sigma modulator |
EP3000241B1 (de) * | 2013-05-23 | 2019-07-17 | Knowles Electronics, LLC | Mikrofon mit sprachaktivitätserkennung und verfahren zum betrieb davon |
US10028054B2 (en) | 2013-10-21 | 2018-07-17 | Knowles Electronics, Llc | Apparatus and method for frequency detection |
US20180317019A1 (en) | 2013-05-23 | 2018-11-01 | Knowles Electronics, Llc | Acoustic activity detecting microphone |
US10020008B2 (en) | 2013-05-23 | 2018-07-10 | Knowles Electronics, Llc | Microphone and corresponding digital interface |
US9711166B2 (en) | 2013-05-23 | 2017-07-18 | Knowles Electronics, Llc | Decimation synchronization in a microphone |
CN104348484B (zh) * | 2013-07-31 | 2018-08-21 | 钰太芯微电子科技(上海)有限公司 | 一种用于数字麦克风的连续时间多比特模数转换器 |
US9502028B2 (en) | 2013-10-18 | 2016-11-22 | Knowles Electronics, Llc | Acoustic activity detection apparatus and method |
US9147397B2 (en) | 2013-10-29 | 2015-09-29 | Knowles Electronics, Llc | VAD detection apparatus and method of operating the same |
US10003379B2 (en) | 2014-05-06 | 2018-06-19 | Starkey Laboratories, Inc. | Wireless communication with probing bandwidth |
US10812900B2 (en) * | 2014-06-02 | 2020-10-20 | Invensense, Inc. | Smart sensor for always-on operation |
US9626981B2 (en) | 2014-06-25 | 2017-04-18 | Cirrus Logic, Inc. | Systems and methods for compressing a digital signal |
WO2016112113A1 (en) | 2015-01-07 | 2016-07-14 | Knowles Electronics, Llc | Utilizing digital microphones for low power keyword detection and noise suppression |
WO2016118480A1 (en) | 2015-01-21 | 2016-07-28 | Knowles Electronics, Llc | Low power voice trigger for acoustic apparatus and method |
US10121472B2 (en) | 2015-02-13 | 2018-11-06 | Knowles Electronics, Llc | Audio buffer catch-up apparatus and method with two microphones |
CN104796145A (zh) * | 2015-04-23 | 2015-07-22 | 西安电子科技大学 | 一种高精度低失真数模转换器 |
US9478234B1 (en) | 2015-07-13 | 2016-10-25 | Knowles Electronics, Llc | Microphone apparatus and method with catch-up buffer |
US9894437B2 (en) * | 2016-02-09 | 2018-02-13 | Knowles Electronics, Llc | Microphone assembly with pulse density modulated signal |
US10281485B2 (en) * | 2016-07-29 | 2019-05-07 | Invensense, Inc. | Multi-path signal processing for microelectromechanical systems (MEMS) sensors |
JP6787158B2 (ja) * | 2017-01-31 | 2020-11-18 | 株式会社富士通ゼネラル | モータ制御装置 |
CN107221335B (zh) * | 2017-05-27 | 2020-07-14 | 大连理工大学 | 一种监控音频信号的数字化装置和方法 |
US11108988B2 (en) * | 2017-07-03 | 2021-08-31 | Sony Semiconductor Solutions Corporation | Transmitter and transmission method and receiver and reception method |
US10348326B2 (en) * | 2017-10-23 | 2019-07-09 | Infineon Technologies Ag | Digital silicon microphone with interpolation |
US11646725B2 (en) * | 2017-10-28 | 2023-05-09 | Solos Technology Limited | Fractional time delay structures in digitally oversampled microphone systems, circuits, and methods |
US11637546B2 (en) | 2018-12-14 | 2023-04-25 | Synaptics Incorporated | Pulse density modulation systems and methods |
KR102493866B1 (ko) * | 2020-02-20 | 2023-01-30 | 시러스 로직 인터내셔널 세미컨덕터 리미티드 | 디지털 마이크로폰을 가진 오디오 시스템 |
US11683624B1 (en) * | 2020-05-12 | 2023-06-20 | Qualcomm Technologies, Inc. | Transducer with analog and digital modulators |
US11139820B1 (en) * | 2020-07-17 | 2021-10-05 | Infineon Technologies Ag | Efficient digital gain implementation in digital microphones |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051799A (en) * | 1989-02-17 | 1991-09-24 | Paul Jon D | Digital output transducer |
EP0766494B1 (de) * | 1995-09-29 | 2002-08-14 | STMicroelectronics S.r.l. | Digitale mikrophonische Vorrichtung |
DE19606261C2 (de) * | 1996-02-06 | 1998-04-09 | Stage Tec Entwicklungsgesellsc | Mikrofon mit zugeortnetem Verstärker |
US5769848A (en) * | 1996-05-14 | 1998-06-23 | Wattanasirichaigoon; Somkiat | Endoscopic instrument |
GB2319922B (en) | 1996-11-27 | 2000-05-03 | Sony Uk Ltd | Microphone |
US6198417B1 (en) * | 1998-01-29 | 2001-03-06 | Massachusetts Institute Of Technology | Pipelined oversampling A/D converter |
US6449370B1 (en) * | 1998-02-16 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Digital electro-acoustic transducer |
EP1052880A3 (de) | 1998-10-07 | 2001-10-24 | Knowles Electronics, LLC | Mikrofon für digitales Hörhilfegerät |
US6326912B1 (en) * | 1999-09-24 | 2001-12-04 | Akm Semiconductor, Inc. | Analog-to-digital conversion using a multi-bit analog delta-sigma modulator combined with a one-bit digital delta-sigma modulator |
US20020106091A1 (en) | 2001-02-02 | 2002-08-08 | Furst Claus Erdmann | Microphone unit with internal A/D converter |
AU2002324959A1 (en) * | 2001-09-07 | 2003-03-24 | Microsemi Corporation | Serial data interface with reduced power consumption |
GB2386280B (en) * | 2002-03-07 | 2005-09-14 | Zarlink Semiconductor Inc | Digital microphone |
DK1493303T3 (da) * | 2002-04-10 | 2007-10-29 | Sonion As | Mikrofonenhed med yderligere analog indgang |
US7274716B2 (en) * | 2003-06-18 | 2007-09-25 | Texas Instruments Incorporated | Multiplexed sigma-delta interface |
US6958717B1 (en) * | 2003-08-25 | 2005-10-25 | Analog Devices, Inc. | Method and apparatus for interconnecting analog and digital sections of A/D and D/A converters |
EP1690437B1 (de) * | 2003-11-24 | 2011-01-12 | Epcos Pte Ltd | Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln |
-
2004
- 2004-10-08 EP EP04762899A patent/EP1690437B1/de active Active
- 2004-10-08 US US10/580,505 patent/US7630504B2/en active Active
- 2004-10-08 CN CN2004800332228A patent/CN1879446B/zh not_active Expired - Fee Related
- 2004-10-08 WO PCT/DK2004/000680 patent/WO2005009072A2/en not_active Application Discontinuation
- 2004-10-08 DE DE602004031044T patent/DE602004031044D1/de active Active
- 2004-10-08 AT AT04762899T patent/ATE495625T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE495625T1 (de) | 2011-01-15 |
CN1879446B (zh) | 2011-02-16 |
CN1879446A (zh) | 2006-12-13 |
WO2005009072A3 (en) | 2005-03-24 |
US20070127761A1 (en) | 2007-06-07 |
WO2005009072A2 (en) | 2005-01-27 |
EP1690437B1 (de) | 2011-01-12 |
US7630504B2 (en) | 2009-12-08 |
EP1690437A2 (de) | 2006-08-16 |
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