GB1430200A - Microphone assembly operable in directional and non-directional modes - Google Patents

Microphone assembly operable in directional and non-directional modes

Info

Publication number
GB1430200A
GB1430200A GB4352373A GB4352373A GB1430200A GB 1430200 A GB1430200 A GB 1430200A GB 4352373 A GB4352373 A GB 4352373A GB 4352373 A GB4352373 A GB 4352373A GB 1430200 A GB1430200 A GB 1430200A
Authority
GB
United Kingdom
Prior art keywords
directional
non
microphone assembly
modes
assembly operable
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
GB4352373A
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.)
INDUSTRIAL RESEARCH PROD Inc
INDUSTRIAL RESEARCH PRODUCTS Inc
Original Assignee
INDUSTRIAL RESEARCH PROD Inc
INDUSTRIAL RESEARCH PRODUCTS 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
Priority to US32967373 priority Critical patent/US3835263A/en
Application filed by INDUSTRIAL RESEARCH PROD Inc, INDUSTRIAL RESEARCH PRODUCTS Inc filed Critical INDUSTRIAL RESEARCH PROD Inc
Publication of GB1430200A publication Critical patent/GB1430200A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • 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; DEAF-AID SETS; 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

Abstract

1430200 Spectacle frames INDUSTRIAL RESEARCH PRODUCTS Inc 17 Sept 1973 [5 Feb 1973] 43523/73 Heading G2J [Also in Division H4] A hearing aid having a microphone 11, Fig. 1 selectively operable in directional and non- directional modes is mounted in the temple piece 12 of a pair of spectacles.
GB4352373A 1973-02-05 1973-09-17 Microphone assembly operable in directional and non-directional modes Expired GB1430200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US32967373 US3835263A (en) 1973-02-05 1973-02-05 Microphone assembly operable in directional and non-directional modes

Publications (1)

Publication Number Publication Date
GB1430200A true GB1430200A (en) 1976-03-31

Family

ID=23286501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4352373A Expired GB1430200A (en) 1973-02-05 1973-09-17 Microphone assembly operable in directional and non-directional modes

Country Status (10)

Country Link
US (1) US3835263A (en)
JP (1) JPS5317444B2 (en)
AT (1) AT332465B (en)
CA (1) CA991738A (en)
CH (1) CH587594A5 (en)
DE (1) DE2400666B2 (en)
DK (1) DK149294C (en)
FR (1) FR2216745B1 (en)
GB (1) GB1430200A (en)
NL (1) NL167832C (en)

Families Citing this family (35)

* 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 (en) * 1985-10-16 1987-05-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
CA1331803C (en) * 1988-12-21 1994-08-30 Murray A. Davis Hearing aid
DE69120542T2 (en) * 1990-09-06 1996-11-28 British Telecomm "Noise Silencing handset"
US5204907A (en) * 1991-05-28 1993-04-20 Motorola, Inc. Noise cancelling microphone and boot mounting arrangement
JPH067205A (en) * 1992-06-26 1994-01-18 Ngk Insulators Ltd Metallic inner cushion for shoes
US7103191B1 (en) 1993-04-13 2006-09-05 Etymotic Research, Inc. Hearing aid having second order directional response
US5524056A (en) * 1993-04-13 1996-06-04 Etymotic Research, Inc. Hearing aid having plural microphones and a microphone switching system
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
AU4567099A (en) * 1998-07-01 2000-01-24 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 (en) * 1999-06-16 2000-12-28 Phonak Ag Hearing-aid, worn behind the ear
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 (en) * 2000-05-30 2000-08-10 Audio Service Gmbh As Hearing aid angle for BTE hearing aids
EP1330940B1 (en) 2000-10-05 2012-03-07 Etymotic Research, Inc Directional microphone assembly
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
WO2005034578A1 (en) * 2003-10-03 2005-04-14 Oticon A/S Hearing aid with printed circuit board and microphone suspension
NL2000085C2 (en) * 2006-06-02 2007-12-04 Varibel B V Glasses with hearing aids that only use one omnidirectional microphone per ear bracket.
US8111839B2 (en) * 2007-04-09 2012-02-07 Personics Holdings Inc. Always on headwear recording system
US7832080B2 (en) * 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
EP2345259A4 (en) * 2008-10-10 2013-08-28 Knowles Electronics Llc Acoustic valve mechanisms
US8447054B2 (en) * 2009-11-11 2013-05-21 Analog Devices, Inc. Microphone with variable low frequency cutoff
DE102009056916B4 (en) * 2009-12-03 2011-07-21 Siemens Medical Instruments Pte. Ltd. Hearing aid with a space-saving arrangement of microphones and sound openings
US20130177192A1 (en) * 2011-10-25 2013-07-11 Knowles Electronics, Llc Vented Microphone Module
KR101783191B1 (en) 2013-03-14 2017-09-29 로베르트 보쉬 게엠베하 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

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
JPS5317444B2 (en) 1978-06-08
FR2216745B1 (en) 1978-11-17
NL7317130A (en) 1974-08-07
CH587594A5 (en) 1977-05-13
ATA820273A (en) 1976-01-15
DE2400666B2 (en) 1977-05-18
DE2400666A1 (en) 1974-08-08
CA991738A (en) 1976-06-22
JPS49107723A (en) 1974-10-14
FR2216745A1 (en) 1974-08-30
US3835263A (en) 1974-09-10
CA991738A1 (en)
DK149294B (en) 1986-04-21
DK149294C (en) 1986-09-29
AU6048473A (en) 1975-03-20
AT332465B (en) 1976-09-27
NL167832B (en) 1981-08-17
NL167832C (en) 1982-01-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee