WO2002003752A3 - A directional microphone - Google Patents

A directional microphone Download PDF

Info

Publication number
WO2002003752A3
WO2002003752A3 PCT/IB2001/001166 IB0101166W WO0203752A3 WO 2002003752 A3 WO2002003752 A3 WO 2002003752A3 IB 0101166 W IB0101166 W IB 0101166W WO 0203752 A3 WO0203752 A3 WO 0203752A3
Authority
WO
WIPO (PCT)
Prior art keywords
sound
rigid
inlet
transporting means
transporting
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.)
Ceased
Application number
PCT/IB2001/001166
Other languages
French (fr)
Other versions
WO2002003752A2 (en
Inventor
Mike Geskus
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.)
Microtonic Nederland BV
Original Assignee
Microtonic Nederland BV
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 Microtonic Nederland BV filed Critical Microtonic Nederland BV
Priority to AU2001274417A priority Critical patent/AU2001274417A1/en
Priority to EP01940930A priority patent/EP1302091A2/en
Publication of WO2002003752A2 publication Critical patent/WO2002003752A2/en
Publication of WO2002003752A3 publication Critical patent/WO2002003752A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements 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
    • H04R1/342—Arrangements 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 for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements 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
    • H04R1/38—Arrangements 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones

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)

Abstract

A directional microphone assembly comprising a surface part having at least two inlet holes for sound, a microphone having at least two sound inlets, and means for transporting sound from each inlet hole to a respective sound inlet, where the transporting means are hollow and at least substantially rigid. The microphone assembly may be used in directional microphones such as for use in hearing aids. The advantage of using rigid transporting means is seen in that the assembly may simply be forced against a face plate instead of soft tubes having to be assembled thereto. It is further described how the shape of the rigid transporting means (e.g. the diameter, the inner surface and the curvature) influences the frequency response and directionality of the tubing and how the diameter of the inlet hole influences the directionality.
PCT/IB2001/001166 2000-07-06 2001-07-02 A directional microphone Ceased WO2002003752A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001274417A AU2001274417A1 (en) 2000-07-06 2001-07-02 A directional microphone
EP01940930A EP1302091A2 (en) 2000-07-06 2001-07-02 A directional microphone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21646300P 2000-07-06 2000-07-06
US60/216,463 2000-07-06

Publications (2)

Publication Number Publication Date
WO2002003752A2 WO2002003752A2 (en) 2002-01-10
WO2002003752A3 true WO2002003752A3 (en) 2002-12-05

Family

ID=22807167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/001166 Ceased WO2002003752A2 (en) 2000-07-06 2001-07-02 A directional microphone

Country Status (4)

Country Link
US (1) US20020006211A1 (en)
EP (1) EP1302091A2 (en)
AU (1) AU2001274417A1 (en)
WO (1) WO2002003752A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
DE10260304B3 (en) * 2002-12-20 2004-07-08 Siemens Audiologische Technik Gmbh Hearing aid system with side-specific hearing aid devices that can be worn behind the ears
US9571948B2 (en) 2012-12-11 2017-02-14 Starkey Laboratories, Inc. Low profile offset spout for hearing assistance device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0681410A2 (en) * 1994-05-04 1995-11-08 AT&T Corp. Single diaphragm second order differential microphone assembly
US5524056A (en) * 1993-04-13 1996-06-04 Etymotic Research, Inc. Hearing aid having plural microphones and a microphone switching system
US6075869A (en) * 1996-12-31 2000-06-13 Etymotic Research, Inc. Directional microphone assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6151399A (en) * 1996-12-31 2000-11-21 Etymotic Research, Inc. Directional microphone system providing for ease of assembly and disassembly
US6160896A (en) * 1998-05-08 2000-12-12 Motorola, Inc. Variable frequency response microphone porting system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524056A (en) * 1993-04-13 1996-06-04 Etymotic Research, Inc. Hearing aid having plural microphones and a microphone switching system
EP0681410A2 (en) * 1994-05-04 1995-11-08 AT&T Corp. Single diaphragm second order differential microphone assembly
US6075869A (en) * 1996-12-31 2000-06-13 Etymotic Research, Inc. Directional microphone assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BUERKLI-HALEVY O: "THE DIRECTIONAL MICROPHONE ADVANTAGE", August 1987, HEARING INSTRUMENTS, HARCOURT BRACE JOVANOVICH PUBL. DULUTH, MINNESOTA, US, VOL. 38, NR. 8, PAGE(S) 34,36-38, ISSN: 0092-4466, XP000795077 *

Also Published As

Publication number Publication date
WO2002003752A2 (en) 2002-01-10
AU2001274417A1 (en) 2002-01-14
US20020006211A1 (en) 2002-01-17
EP1302091A2 (en) 2003-04-16

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