JPS49107723A - - Google Patents

Info

Publication number
JPS49107723A
JPS49107723A JP48143670A JP14367073A JPS49107723A JP S49107723 A JPS49107723 A JP S49107723A JP 48143670 A JP48143670 A JP 48143670A JP 14367073 A JP14367073 A JP 14367073A JP S49107723 A JPS49107723 A JP S49107723A
Authority
JP
Japan
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.)
Granted
Application number
JP48143670A
Other languages
Japanese (ja)
Other versions
JPS5317444B2 (https=
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 filed Critical
Publication of JPS49107723A publication Critical patent/JPS49107723A/ja
Publication of JPS5317444B2 publication Critical patent/JPS5317444B2/ja
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Electric hearing aids
    • H04R25/40Arrangements for obtaining a desired directivity characteristic
    • H04R25/402Arrangements for obtaining a desired directivity characteristic using contructional means
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
JP14367073A 1973-02-05 1973-12-24 Expired JPS5317444B2 (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00329673A US3835263A (en) 1973-02-05 1973-02-05 Microphone assembly operable in directional and non-directional modes

Publications (2)

Publication Number Publication Date
JPS49107723A true JPS49107723A (https=) 1974-10-14
JPS5317444B2 JPS5317444B2 (https=) 1978-06-08

Family

ID=23286501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14367073A Expired JPS5317444B2 (https=) 1973-02-05 1973-12-24

Country Status (9)

Country Link
US (1) US3835263A (https=)
JP (1) JPS5317444B2 (https=)
AT (1) AT332465B (https=)
CA (1) CA991738A (https=)
CH (1) CH587594A5 (https=)
DK (1) DK149294C (https=)
FR (1) FR2216745B1 (https=)
GB (1) GB1430200A (https=)
NL (1) NL167832C (https=)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006321A (en) * 1974-02-20 1977-02-01 Industrial Research Products, Inc. Transducer coupling system
US3909556A (en) * 1974-08-08 1975-09-30 Audivox Inc Directionally variable hearing aid
US4763753A (en) * 1984-07-05 1988-08-16 Etymotic Research, Inc. Insert earphones for audiometry
DE8529458U1 (de) * 1985-10-16 1987-05-07 Siemens AG, 1000 Berlin und 8000 München Hörgerät
CA1331803C (en) * 1988-12-21 1994-08-30 Murray A. Davis Hearing aid
AU645136B2 (en) * 1990-09-06 1994-01-06 British Telecommunications Public Limited Company Noise-cancelling handset
US5204907A (en) * 1991-05-28 1993-04-20 Motorola, Inc. Noise cancelling microphone and boot mounting arrangement
JPH067205A (ja) * 1992-06-26 1994-01-18 Ngk Insulators Ltd 靴用金属製中敷
US5524056A (en) 1993-04-13 1996-06-04 Etymotic Research, Inc. Hearing aid having plural microphones and a microphone switching system
US6798890B2 (en) 2000-10-05 2004-09-28 Etymotic Research, Inc. Directional microphone assembly
US6151399A (en) 1996-12-31 2000-11-21 Etymotic Research, Inc. Directional microphone system providing for ease of assembly and disassembly
US7881486B1 (en) * 1996-12-31 2011-02-01 Etymotic Research, Inc. Directional microphone assembly
US5878147A (en) 1996-12-31 1999-03-02 Etymotic Research, Inc. Directional microphone assembly
WO2000002419A1 (en) * 1998-07-01 2000-01-13 Resound Corporation External microphone protective membrane
US6597793B1 (en) 1998-08-06 2003-07-22 Resistance Technology, Inc. Directional/omni-directional hearing aid microphone and housing
US6690806B1 (en) * 1999-04-01 2004-02-10 Resistance Technology, Inc. Various directional/omni-directional hearing aid microphone and housing structures
WO2000079835A1 (de) * 1999-06-16 2000-12-28 Phonak Ag Hinterohr-hörgerät
US6876749B1 (en) * 1999-07-12 2005-04-05 Etymotic Research, Inc. Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics
US20020001391A1 (en) * 2000-03-16 2002-01-03 Resistance Technology, Inc. Acoustic switch with electronic switching capability
DE20009593U1 (de) * 2000-05-30 2000-08-10 AS Audio Service GmbH, 32051 Herford Hörgerätewinkel für HdO-Hörgeräte
US7136497B2 (en) * 2002-04-17 2006-11-14 Knowles Electronics, Llc. Acoustical switch for a directional microphone
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
US7751579B2 (en) * 2003-06-13 2010-07-06 Etymotic Research, Inc. Acoustically transparent debris barrier for audio transducers
US7233679B2 (en) * 2003-09-30 2007-06-19 Motorola, Inc. Microphone system for a communication device
US20060274909A1 (en) * 2003-10-03 2006-12-07 Oticon A/S Hearing aid with printed circuit board and microphone suspension
NL2000085C2 (nl) * 2006-06-02 2007-12-04 Varibel B V Bril met gehoorondersteuningsmiddelen welke slechts één omnidirectionele microfoon per oorbeugel gebruikt.
WO2008124786A2 (en) * 2007-04-09 2008-10-16 Personics Holdings Inc. Always on headwear recording system
US7832080B2 (en) * 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
WO2010042613A2 (en) * 2008-10-10 2010-04-15 Knowles Electronics, Llc Acoustic valve mechanisms
US8447054B2 (en) * 2009-11-11 2013-05-21 Analog Devices, Inc. Microphone with variable low frequency cutoff
DE102009056916B4 (de) * 2009-12-03 2011-07-21 Siemens Medical Instruments Pte. Ltd. Hörgerät mit einer platzsparenden Anordnung von Mikrofonen und Schallöffnungen
US20130177192A1 (en) * 2011-10-25 2013-07-11 Knowles Electronics, Llc Vented Microphone Module
US9344809B2 (en) 2013-03-14 2016-05-17 Robert Bosch Gmbh Digital acoustic low frequency response control for MEMS microphones
US9859879B2 (en) 2015-09-11 2018-01-02 Knowles Electronics, Llc Method and apparatus to clip incoming signals in opposing directions when in an off state
CN107249157A (zh) * 2017-08-09 2017-10-13 陆文胜 一种定向降噪耳机麦克风
DE102018221726A1 (de) 2017-12-29 2019-07-04 Knowles Electronics, Llc Audiovorrichtung mit akustischem Ventil
DE102018221725A1 (de) 2018-01-08 2019-07-11 Knowles Electronics, Llc Audiovorrichtung mit Ventilzustandsverwaltung
US10932069B2 (en) 2018-04-12 2021-02-23 Knowles Electronics, Llc Acoustic valve for hearing device
EP3884804A4 (en) 2018-11-20 2022-09-07 Toray Industries, Inc. PROTECTIVE CLOTHING
US11102576B2 (en) 2018-12-31 2021-08-24 Knowles Electronicis, LLC Audio device with audio signal processing based on acoustic valve state
US10917731B2 (en) 2018-12-31 2021-02-09 Knowles Electronics, Llc Acoustic valve for hearing device
US11774320B1 (en) * 2022-11-18 2023-10-03 xMEMS Labs, Inc. Acoustic impedance measuring system and acoustic impedance measuring method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770911A (en) * 1972-07-21 1973-11-06 Industrial Research Prod Inc Hearing aid system

Also Published As

Publication number Publication date
FR2216745A1 (https=) 1974-08-30
FR2216745B1 (https=) 1978-11-17
AT332465B (de) 1976-09-27
DE2400666B2 (de) 1977-05-18
DK149294B (da) 1986-04-21
CA991738A (en) 1976-06-22
NL7317130A (https=) 1974-08-07
GB1430200A (en) 1976-03-31
CH587594A5 (https=) 1977-05-13
ATA820273A (de) 1976-01-15
NL167832C (nl) 1982-01-18
JPS5317444B2 (https=) 1978-06-08
NL167832B (nl) 1981-08-17
DK149294C (da) 1986-09-29
AU6048473A (en) 1975-03-20
DE2400666A1 (de) 1974-08-08
US3835263A (en) 1974-09-10

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