WO1995022878A3 - A background noise reducing microphone - Google Patents

A background noise reducing microphone Download PDF

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Publication number
WO1995022878A3
WO1995022878A3 PCT/US1995/001736 US9501736W WO9522878A3 WO 1995022878 A3 WO1995022878 A3 WO 1995022878A3 US 9501736 W US9501736 W US 9501736W WO 9522878 A3 WO9522878 A3 WO 9522878A3
Authority
WO
WIPO (PCT)
Prior art keywords
housing
microphone
membrane units
background noise
opening
Prior art date
Application number
PCT/US1995/001736
Other languages
French (fr)
Other versions
WO1995022878A2 (en
Inventor
Yosef Yacov Shacham
Shay Kaplan
Original Assignee
Mizur Technology Ltd
Yosef Yacov Shacham
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 Mizur Technology Ltd, Yosef Yacov Shacham filed Critical Mizur Technology Ltd
Priority to AU19157/95A priority Critical patent/AU1915795A/en
Publication of WO1995022878A2 publication Critical patent/WO1995022878A2/en
Publication of WO1995022878A3 publication Critical patent/WO1995022878A3/en

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Abstract

A background noise reducing microphone is disclosed which has a housing and two similar capacitive microphones. The housing has at least one opening facing the outside and each capacitive microphone has a vibratable membrane. The membranes are electrically connected together and mechanically coupled through the housing. Only one of the capacitive microphones faces the opening to the outside. In an alternative embodiment, the microphone of the present invention has a housing, at least two strain-measuring membrane units and an output unit connected to the output of the membrane units. The housing has one opening, as per the above, which only some of the membrane units face. The output unit outputs a signal corresponding to the difference in the outputs of the strain-measuring membrane units. In a further embodiment, a thin film microphone is disclosed which includes at least one vibratable membrane having acoustic openings therein and a solid static back plate.
PCT/US1995/001736 1994-02-16 1995-02-09 A background noise reducing microphone WO1995022878A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19157/95A AU1915795A (en) 1994-02-16 1995-02-09 A background noise reducing microphone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL10867694A IL108676A0 (en) 1994-02-16 1994-02-16 A background noise reducing microphone
IL108676 1994-02-16

Publications (2)

Publication Number Publication Date
WO1995022878A2 WO1995022878A2 (en) 1995-08-24
WO1995022878A3 true WO1995022878A3 (en) 1995-10-19

Family

ID=11065831

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/001736 WO1995022878A2 (en) 1994-02-16 1995-02-09 A background noise reducing microphone

Country Status (3)

Country Link
AU (1) AU1915795A (en)
IL (1) IL108676A0 (en)
WO (1) WO1995022878A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU718073B2 (en) * 1996-03-28 2000-04-06 Medtronic, Inc. Detection of pressure waves transmitted through catheter/lead body
DE102010015400B4 (en) * 2010-04-19 2013-01-17 Siemens Medical Instruments Pte. Ltd. Microphone for a hearing device and method for determining an airborne sound and a structure-borne sound
US11950055B2 (en) 2014-01-06 2024-04-02 Shenzhen Shokz Co., Ltd. Systems and methods for suppressing sound leakage
US9602930B2 (en) 2015-03-31 2017-03-21 Qualcomm Incorporated Dual diaphragm microphone
US11509994B2 (en) 2018-04-26 2022-11-22 Shenzhen Shokz Co., Ltd. Vibration removal apparatus and method for dual-microphone earphones
CN112637736B (en) 2018-04-26 2022-05-03 深圳市韶音科技有限公司 Earphone system and microphone device thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025359A (en) * 1960-02-25 1962-03-13 Gulton Ind Inc Vibration-compensated pressure sensitive microphone
EP0216326A2 (en) * 1985-09-20 1987-04-01 Colin Electronics Co., Ltd. Electroacoustic transducer
US4783821A (en) * 1987-11-25 1988-11-08 The Regents Of The University Of California IC processed piezoelectric microphone
JPH0329499A (en) * 1989-06-26 1991-02-07 Agency Of Ind Science & Technol Static condenser type microphone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025359A (en) * 1960-02-25 1962-03-13 Gulton Ind Inc Vibration-compensated pressure sensitive microphone
EP0216326A2 (en) * 1985-09-20 1987-04-01 Colin Electronics Co., Ltd. Electroacoustic transducer
US4783821A (en) * 1987-11-25 1988-11-08 The Regents Of The University Of California IC processed piezoelectric microphone
JPH0329499A (en) * 1989-06-26 1991-02-07 Agency Of Ind Science & Technol Static condenser type microphone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 157 (E - 1058) 19 April 1991 (1991-04-19) *

Also Published As

Publication number Publication date
AU1915795A (en) 1995-09-04
IL108676A0 (en) 1994-05-30
WO1995022878A2 (en) 1995-08-24

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