WO2005009072A3 - Microphone comprising integral multi-level quantizer and single-bit conversion means - Google Patents
Microphone comprising integral multi-level quantizer and single-bit conversion means Download PDFInfo
- Publication number
- WO2005009072A3 WO2005009072A3 PCT/DK2004/000680 DK2004000680W WO2005009072A3 WO 2005009072 A3 WO2005009072 A3 WO 2005009072A3 DK 2004000680 W DK2004000680 W DK 2004000680W WO 2005009072 A3 WO2005009072 A3 WO 2005009072A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- digital
- microphone
- converter
- level quantizer
- conversion means
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/580,505 US7630504B2 (en) | 2003-11-24 | 2004-10-08 | Microphone comprising integral multi-level quantizer and single-bit conversion means |
AT04762899T ATE495625T1 (en) | 2003-11-24 | 2004-10-08 | MICROPHONE WITH AN INTEGRAL MULTI-LEVEL QUANTIZER AND SINGLE-BIT CONVERTER |
EP04762899A EP1690437B1 (en) | 2003-11-24 | 2004-10-08 | Microphone comprising integral multi-level quantizer and single-bit conversion means |
CN2004800332228A CN1879446B (en) | 2003-11-24 | 2004-10-08 | Microphone comprising integral multi-level quantizer and single-bit conversion means |
DE602004031044T DE602004031044D1 (en) | 2003-11-24 | 2004-10-08 | MICROPHONE WITH AN INTEGRAL MULTIPLE LEVEL QUANTIZER AND BIT IMPROVERS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52503903P | 2003-11-24 | 2003-11-24 | |
US60/525,039 | 2003-11-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005009072A2 WO2005009072A2 (en) | 2005-01-27 |
WO2005009072A3 true WO2005009072A3 (en) | 2005-03-24 |
Family
ID=34079506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK2004/000680 WO2005009072A2 (en) | 2003-11-24 | 2004-10-08 | Microphone comprising integral multi-level quantizer and single-bit conversion means |
Country Status (6)
Country | Link |
---|---|
US (1) | US7630504B2 (en) |
EP (1) | EP1690437B1 (en) |
CN (1) | CN1879446B (en) |
AT (1) | ATE495625T1 (en) |
DE (1) | DE602004031044D1 (en) |
WO (1) | WO2005009072A2 (en) |
Families Citing this family (54)
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EP1690437B1 (en) * | 2003-11-24 | 2011-01-12 | Epcos Pte Ltd | Microphone comprising integral multi-level quantizer and single-bit conversion means |
US8041066B2 (en) | 2007-01-03 | 2011-10-18 | Starkey Laboratories, Inc. | Wireless system for hearing communication devices providing wireless stereo reception modes |
US9774961B2 (en) | 2005-06-05 | 2017-09-26 | Starkey Laboratories, Inc. | Hearing assistance device ear-to-ear communication using an intermediate device |
KR20080063267A (en) | 2005-07-19 | 2008-07-03 | 아우디오아시스 에이/에스 | Programmable microphone |
DE202006002942U1 (en) * | 2006-02-22 | 2007-07-05 | Brauner, Dirk | Adapter for microphones |
GB2446966B (en) | 2006-04-12 | 2010-07-07 | Wolfson Microelectronics Plc | Digital circuit arrangements for ambient noise-reduction |
WO2007144808A2 (en) * | 2006-06-15 | 2007-12-21 | Nxp B.V. | A method of providing a clock frequency for a processor |
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 |
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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 (en) * | 2008-12-16 | 2012-11-15 | 한국전자통신연구원 | Apparatus and method for amplifying signal, and wireless transmitter therewith |
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 (en) * | 2009-06-11 | 2016-06-22 | 应美盛股份有限公司 | High performance voice frequency amplifying circuit |
US8737653B2 (en) | 2009-12-30 | 2014-05-27 | Starkey Laboratories, Inc. | Noise reduction system for hearing assistance devices |
DE102010006132B4 (en) | 2010-01-29 | 2013-05-08 | Epcos Ag | Miniaturized electrical component with a stack of a MEMS and an ASIC |
US20130129117A1 (en) * | 2011-11-21 | 2013-05-23 | Henrik Thomsen | Audio amplification circuit |
CN103138687B (en) * | 2011-11-22 | 2017-04-12 | 应美盛股份有限公司 | Distortion inhibition in high level audio frequency amplifying circuit |
EP2608569B1 (en) * | 2011-12-22 | 2014-07-23 | ST-Ericsson SA | Digital microphone device with extended dynamic range |
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 |
EP2984760A2 (en) * | 2013-04-09 | 2016-02-17 | Cirrus Logic, Inc. | Systems and methods for compressing a digital signal in a digital microphone system |
CN110244833B (en) | 2013-05-23 | 2023-05-12 | 美商楼氏电子有限公司 | Microphone assembly |
US9711166B2 (en) * | 2013-05-23 | 2017-07-18 | Knowles Electronics, Llc | Decimation synchronization in a microphone |
US10020008B2 (en) | 2013-05-23 | 2018-07-10 | Knowles Electronics, Llc | Microphone and corresponding digital interface |
US20180317019A1 (en) | 2013-05-23 | 2018-11-01 | Knowles Electronics, Llc | Acoustic activity detecting microphone |
US10028054B2 (en) | 2013-10-21 | 2018-07-17 | Knowles Electronics, Llc | Apparatus and method for frequency detection |
CN104348484B (en) * | 2013-07-31 | 2018-08-21 | 钰太芯微电子科技(上海)有限公司 | A kind of more bit moduli converters of continuous time for digital microphone |
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 |
CN107112012B (en) | 2015-01-07 | 2020-11-20 | 美商楼氏电子有限公司 | Method and system for audio processing and computer readable storage medium |
TW201640322A (en) | 2015-01-21 | 2016-11-16 | 諾爾斯電子公司 | 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 (en) * | 2015-04-23 | 2015-07-22 | 西安电子科技大学 | High-precision and low-distortion digital-analog converter |
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 (en) * | 2017-01-31 | 2020-11-18 | 株式会社富士通ゼネラル | Motor control device |
CN107221335B (en) * | 2017-05-27 | 2020-07-14 | 大连理工大学 | Digitization device and method for monitoring audio signal |
CN110800247A (en) * | 2017-07-03 | 2020-02-14 | 索尼半导体解决方案公司 | Transmitter and transmitting method, and receiver and receiving 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 (en) * | 2020-02-20 | 2023-01-30 | 시러스 로직 인터내셔널 세미컨덕터 리미티드 | Audio system with digital microphone |
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 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051799A (en) * | 1989-02-17 | 1991-09-24 | Paul Jon D | Digital output transducer |
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 |
WO2003023970A2 (en) * | 2001-09-07 | 2003-03-20 | Microsemi Corporation | Serial data interface with reduced power consumption |
WO2003088709A1 (en) * | 2002-04-10 | 2003-10-23 | Sonion A/S | Microphone assembly with auxiliary analog input |
Family Cites Families (12)
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DE69527790D1 (en) * | 1995-09-29 | 2002-09-19 | St Microelectronics Srl | Digital microphone device |
DE19606261C2 (en) * | 1996-02-06 | 1998-04-09 | Stage Tec Entwicklungsgesellsc | Microphone with assigned amplifier |
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 (en) | 1998-10-07 | 2001-10-24 | Knowles Electronics, LLC | Digital hearing aid microphone |
US20020106091A1 (en) | 2001-02-02 | 2002-08-08 | Furst Claus Erdmann | Microphone unit with internal A/D converter |
GB2386280B (en) * | 2002-03-07 | 2005-09-14 | Zarlink Semiconductor Inc | Digital microphone |
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 (en) * | 2003-11-24 | 2011-01-12 | Epcos Pte Ltd | Microphone comprising integral multi-level quantizer and single-bit conversion means |
-
2004
- 2004-10-08 EP EP04762899A patent/EP1690437B1/en active Active
- 2004-10-08 AT AT04762899T patent/ATE495625T1/en not_active IP Right Cessation
- 2004-10-08 CN CN2004800332228A patent/CN1879446B/en not_active Expired - Fee Related
- 2004-10-08 US US10/580,505 patent/US7630504B2/en active Active
- 2004-10-08 WO PCT/DK2004/000680 patent/WO2005009072A2/en not_active Application Discontinuation
- 2004-10-08 DE DE602004031044T patent/DE602004031044D1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051799A (en) * | 1989-02-17 | 1991-09-24 | Paul Jon D | Digital output transducer |
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 |
WO2003023970A2 (en) * | 2001-09-07 | 2003-03-20 | Microsemi Corporation | Serial data interface with reduced power consumption |
WO2003088709A1 (en) * | 2002-04-10 | 2003-10-23 | Sonion A/S | Microphone assembly with auxiliary analog input |
Also Published As
Publication number | Publication date |
---|---|
WO2005009072A2 (en) | 2005-01-27 |
CN1879446B (en) | 2011-02-16 |
EP1690437A2 (en) | 2006-08-16 |
CN1879446A (en) | 2006-12-13 |
US20070127761A1 (en) | 2007-06-07 |
DE602004031044D1 (en) | 2011-02-24 |
ATE495625T1 (en) | 2011-01-15 |
EP1690437B1 (en) | 2011-01-12 |
US7630504B2 (en) | 2009-12-08 |
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