DE69720536D1 - Audio a/d-wandler mit frequenzmodulation - Google Patents

Audio a/d-wandler mit frequenzmodulation

Info

Publication number
DE69720536D1
DE69720536D1 DE69720536T DE69720536T DE69720536D1 DE 69720536 D1 DE69720536 D1 DE 69720536D1 DE 69720536 T DE69720536 T DE 69720536T DE 69720536 T DE69720536 T DE 69720536T DE 69720536 D1 DE69720536 D1 DE 69720536D1
Authority
DE
Germany
Prior art keywords
frequenzmodulation
audio
wandler mit
wandler
mit
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.)
Expired - Lifetime
Application number
DE69720536T
Other languages
English (en)
Inventor
W Dent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
Original Assignee
Ericsson Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of DE69720536D1 publication Critical patent/DE69720536D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Analogue/Digital Conversion (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Amplifiers (AREA)
DE69720536T 1996-06-03 1997-06-03 Audio a/d-wandler mit frequenzmodulation Expired - Lifetime DE69720536D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/657,388 US6067363A (en) 1996-06-03 1996-06-03 Audio A/D convertor using frequency modulation
PCT/US1997/009038 WO1997047090A1 (en) 1996-06-03 1997-06-03 An audio a/d converter using frequency modulation

Publications (1)

Publication Number Publication Date
DE69720536D1 true DE69720536D1 (en) 2003-05-08

Family

ID=24636954

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69720536T Expired - Lifetime DE69720536D1 (en) 1996-06-03 1997-06-03 Audio a/d-wandler mit frequenzmodulation

Country Status (9)

Country Link
US (2) US6067363A (de)
EP (2) EP0972345B1 (de)
JP (1) JP2001505719A (de)
CN (1) CN1106713C (de)
AU (1) AU725450B2 (de)
BR (1) BR9709287A (de)
DE (1) DE69720536D1 (de)
MY (1) MY119179A (de)
WO (1) WO1997047090A1 (de)

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US6067363A (en) * 1996-06-03 2000-05-23 Ericsson Inc. Audio A/D convertor using frequency modulation
US7103643B1 (en) 1999-12-08 2006-09-05 Qualcomm Inc E-mail software and method and system for distributing advertisements to client devices that have such E-mail software installed thereon
AU2002237204A1 (en) * 2001-03-09 2002-09-24 Techtronic A/S An electret condensor microphone preamplifier that is insensitive to leakage currents at the input
FR2846165A1 (fr) * 2002-10-17 2004-04-23 St Microelectronics Sa Procede d'estimation de la phase dans un systeme de communication numerique et boucle a verrouillage de phase
US6975258B2 (en) * 2003-01-23 2005-12-13 Corporation For National Research Initiatives Circuit for direct digital delta-sigma conversion of variable electrical capacitance
US6853733B1 (en) * 2003-06-18 2005-02-08 National Semiconductor Corporation Two-wire interface for digital microphones
KR100576373B1 (ko) 2004-03-08 2006-05-03 학교법인 한양학원 디지털 모듈레이션 기법을 이용한 디지털 ｄｃ-ｄｃ 컨버터
FR2902249B1 (fr) * 2006-06-13 2008-11-21 St Microelectronics Rousset Procede d'echantillonnage numerique et dispositif de mise en oeuvre correspondant
US7697899B2 (en) * 2006-08-31 2010-04-13 Broadcom Corporation RFIC with on-chip acoustic transducer circuit
JP4850086B2 (ja) * 2007-02-14 2012-01-11 パナソニック株式会社 Ｍｅｍｓマイクロホン装置
CN101452683B (zh) * 2007-12-05 2010-10-13 联咏科技股份有限公司 电压发生系统
US7692462B2 (en) * 2008-01-25 2010-04-06 Himax Technologies Limited Delay-locked loop and a stabilizing method thereof
JP5162796B2 (ja) * 2008-03-11 2013-03-13 株式会社オーディオテクニカ デジタルマイクロホン
US8629795B2 (en) * 2009-09-09 2014-01-14 Taiwan Semiconductor Manufacturing Company, Ltd. Micro-electro-mechanical systems (MEMS), systems, and operating methods thereof
US8401600B1 (en) 2010-08-02 2013-03-19 Hypres, Inc. Superconducting multi-bit digital mixer
TWI516138B (zh) * 2010-08-24 2016-01-01 杜比國際公司 從二聲道音頻訊號決定參數式立體聲參數之系統與方法及其電腦程式產品
CN102324237B (zh) * 2011-05-30 2013-01-02 深圳市华新微声学技术有限公司 麦克风阵列语音波束形成方法、语音信号处理装置及系统
WO2015087372A1 (ja) * 2013-12-12 2015-06-18 救救ｃｏｍ株式会社 単一指向性接話型マイクロフォン
US9936304B2 (en) * 2016-08-23 2018-04-03 Infineon Technologies Ag Digital silicon microphone with configurable sensitivity, frequency response and noise transfer function
US11162972B2 (en) * 2018-05-23 2021-11-02 University Of Central Florida Research Foundation, Inc. Resonant MEMS piezoelectric sensor
US11374586B2 (en) * 2019-10-13 2022-06-28 Ultraleap Limited Reducing harmonic distortion by dithering

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US3533101A (en) * 1967-03-20 1970-10-06 Motorola Inc Frequency to digital conversions
US3656132A (en) * 1970-05-26 1972-04-11 Joseph S Brumbelow Remote monitor system
SE351335B (de) * 1972-01-05 1972-11-20 Ericsson Telefon Ab L M
GB1515287A (en) * 1974-05-30 1978-06-21 Plessey Co Ltd Piezoelectric transducers
DE2833335A1 (de) * 1978-07-29 1980-03-06 Licentia Gmbh Digitaler frequenzdiskriminator
JPS5852780Y2 (ja) * 1980-07-19 1983-12-01 パイオニア株式会社 マイクロホン
US4471340A (en) * 1981-06-02 1984-09-11 The United States Of America As Represented By The Secretary Of The Navy Analog to digital converter
FR2511570A1 (fr) * 1981-08-11 1983-02-18 Thomson Csf Transducteur electroacoustique a polymere piezoelectrique
US4593266A (en) * 1983-08-08 1986-06-03 Rca Corporation Analog-to-digital converter/demodulator for FM signals
US4758821A (en) * 1983-12-28 1988-07-19 Timeback Systems, Inc. Methods and apparatus for analog-to-digital conversion
JPH0636640B2 (ja) * 1985-06-26 1994-05-11 松下電器産業株式会社 圧電型マイクロホン
US4739278A (en) * 1985-11-12 1988-04-19 Hughes Aircraft Company Digital phase-frequency discriminator comprising simplified reset means and associated method
US4759069A (en) * 1987-03-25 1988-07-19 Sy/Lert System Emergency signal warning system
US4847903A (en) * 1987-05-22 1989-07-11 Recoton Corporation Wireless remote speaker system
JPH02177646A (ja) * 1988-12-27 1990-07-10 Nec Corp 電話機における圧電送話器の無極性インピーダンス変換回路
DE3942818C1 (en) * 1989-12-23 1991-04-11 Ant Nachrichtentechnik Gmbh, 7150 Backnang, De Async. scan rate converter - has interpolation filter increasing input scan rate and decimation filter reducing scan rate read out from holder
US5084669A (en) * 1990-03-08 1992-01-28 Telefonaktiebolaget L M Ericsson Direct phase digitization
US5126743A (en) * 1990-05-25 1992-06-30 New Sd, Inc. System and method for converting a DSB input signal to a frequency encoded output signal
US5189420A (en) * 1990-06-08 1993-02-23 The Mitre Corporation Method and apparatus for direct analog to formatted digital number conversion
GB9026906D0 (en) * 1990-12-11 1991-01-30 B & W Loudspeakers Compensating filters
US5315583A (en) * 1991-04-11 1994-05-24 Usa Digital Radio Method and apparatus for digital audio broadcasting and reception
US5220275A (en) * 1991-07-26 1993-06-15 Ericsson Ge Mobile Communication Holding, Inc. Accumulator phase digitizer
US5157730A (en) * 1991-10-15 1992-10-20 Hualon Microelectrics Corporation Pulse rate modulation type piezoelectric crystal driver device
US5222144A (en) * 1991-10-28 1993-06-22 Ford Motor Company Digital quadrature radio receiver with two-step processing
US5300829A (en) * 1992-09-09 1994-04-05 Intel Corporation BiCMOS circuit with negative VBE protection
GB2270596A (en) * 1992-09-15 1994-03-16 Evangelos Arkas Analogue to digital and digital to analogue converters
US5727023A (en) * 1992-10-27 1998-03-10 Ericsson Inc. Apparatus for and method of speech digitizing
US5461643A (en) * 1993-04-08 1995-10-24 Motorola Direct phase digitizing apparatus and method
JP2555936B2 (ja) * 1993-06-30 1996-11-20 日本電気株式会社 ディジタルマイクロホン
JPH0758549A (ja) * 1993-08-09 1995-03-03 Sony Corp 周波数変調回路
JP3437237B2 (ja) * 1994-01-21 2003-08-18 松下電器産業株式会社 増幅装置
US5455868A (en) * 1994-02-14 1995-10-03 Edward W. Sergent Gunshot detector
JP2550914B2 (ja) * 1994-06-21 1996-11-06 日本電気株式会社 折りたたみ型携帯電話装置
US5649020A (en) * 1994-08-29 1997-07-15 Motorola, Inc. Electronic driver for an electromagnetic resonant transducer
US5949892A (en) * 1995-12-07 1999-09-07 Advanced Micro Devices, Inc. Method of and apparatus for dynamically controlling operating characteristics of a microphone
US6067363A (en) * 1996-06-03 2000-05-23 Ericsson Inc. Audio A/D convertor using frequency modulation
US5654677A (en) * 1996-06-24 1997-08-05 Ericsson Inc. Relaxation oscillator of reduced complexity using CMOS equivalent of a four-layer diode

Also Published As

Publication number Publication date
CN1106713C (zh) 2003-04-23
MY119179A (en) 2005-04-30
EP1133213A3 (de) 2002-09-11
US6731763B1 (en) 2004-05-04
BR9709287A (pt) 1999-08-10
US6067363A (en) 2000-05-23
EP0972345B1 (de) 2003-04-02
WO1997047090A1 (en) 1997-12-11
AU3145497A (en) 1998-01-05
JP2001505719A (ja) 2001-04-24
EP0972345A1 (de) 2000-01-19
EP1133213A2 (de) 2001-09-12
CN1227680A (zh) 1999-09-01
AU725450B2 (en) 2000-10-12

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Legal Events

Date Code Title Description
8332 No legal effect for de