GB1248088A - Improvements relating to microphones - Google Patents

Improvements relating to microphones

Info

Publication number
GB1248088A
GB1248088A GB00803/69A GB1080369A GB1248088A GB 1248088 A GB1248088 A GB 1248088A GB 00803/69 A GB00803/69 A GB 00803/69A GB 1080369 A GB1080369 A GB 1080369A GB 1248088 A GB1248088 A GB 1248088A
Authority
GB
United Kingdom
Prior art keywords
circuits
switching elements
sampling
electrode
conducting
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
Application number
GB00803/69A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1248088A publication Critical patent/GB1248088A/en
Expired 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
    • H04R19/00—Electrostatic transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • 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
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • 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
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/26—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with weighted coding, i.e. the weight given to a digit depends on the position of the digit within the block or code word, e.g. there is a given radix and the weights are powers of this radix

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Pressure Sensors (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measuring Fluid Pressure (AREA)
GB00803/69A 1968-03-01 1969-02-28 Improvements relating to microphones Expired GB1248088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH312968A CH466376A (de) 1968-03-01 1968-03-01 Anordnung zur Umwandlung von Drücken in digitale elektrische Signale

Publications (1)

Publication Number Publication Date
GB1248088A true GB1248088A (en) 1971-09-29

Family

ID=4249234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB00803/69A Expired GB1248088A (en) 1968-03-01 1969-02-28 Improvements relating to microphones

Country Status (5)

Country Link
US (1) US3626096A (fr)
CH (1) CH466376A (fr)
DE (1) DE1910156C3 (fr)
FR (1) FR1603889A (fr)
GB (1) GB1248088A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2175611A1 (fr) * 1972-03-16 1973-10-26 Rybak Boris
CH539845A (de) * 1972-06-30 1973-07-31 Ibm Elektroakustischer Wandler
US3958237A (en) * 1975-03-31 1976-05-18 Gte Laboratories Incorporated Acoustic to pulse code transducer
US4395593A (en) * 1979-11-27 1983-07-26 Bell Telephone Laboratories, Incorporated Acoustic differential digital coder
DE3020247C2 (de) * 1980-05-28 1982-09-02 Franz Vertriebsgesellschaft mbH, 7634 Kippenheim Verfahren und Anordnung zur Umwandlung von Schallwellen in digitale elektrische Signale mit Hilfe von elektroakustischen Wandlern
US4515997A (en) * 1982-09-23 1985-05-07 Stinger Jr Walter E Direct digital loudspeaker
US4704556A (en) * 1983-12-05 1987-11-03 Leslie Kay Transducers
DE3642055A1 (de) * 1986-12-09 1988-07-07 Wolfgang Dr Littmann Einrichtung zur direkten umwandlung von schall in digitale information - digitales mikrofon
EP0561566B1 (fr) * 1992-03-18 1999-07-28 Knowles Electronics, Inc. Microphone à condensateur à l'état solide
US5490220A (en) * 1992-03-18 1996-02-06 Knowles Electronics, Inc. Solid state condenser and microphone devices
US5949892A (en) * 1995-12-07 1999-09-07 Advanced Micro Devices, Inc. Method of and apparatus for dynamically controlling operating characteristics of a microphone
US5870482A (en) * 1997-02-25 1999-02-09 Knowles Electronics, Inc. Miniature silicon condenser microphone
JP3377173B2 (ja) * 1998-02-16 2003-02-17 松下電器産業株式会社 ディジタル式電気音響変換器
KR20050075659A (ko) 2004-01-17 2005-07-21 삼성전자주식회사 디지털 출력을 갖는 압력센서, 그 제조방법 및 그 센싱방법
DE102009035973B4 (de) * 2009-08-04 2011-07-07 Baumer Innotec Ag Anordnung und Verfahren zur kapazitiven Druckmessung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236947A (en) * 1961-12-21 1966-02-22 Ibm Word code generator
DE1252258C2 (de) * 1965-04-13 1974-06-20 Nach dem elektrostatischen prinzip arbeitender elektroakustischer wandler und verfahren zu seiner herstellung

Also Published As

Publication number Publication date
DE1910156B2 (de) 1978-11-30
FR1603889A (fr) 1971-06-07
DE1910156C3 (de) 1979-07-26
CH466376A (de) 1968-12-15
US3626096A (en) 1971-12-07
DE1910156A1 (de) 1969-10-23

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