CA2289033A1 - Active headset with bridge amplifier - Google Patents

Active headset with bridge amplifier Download PDF

Info

Publication number
CA2289033A1
CA2289033A1 CA002289033A CA2289033A CA2289033A1 CA 2289033 A1 CA2289033 A1 CA 2289033A1 CA 002289033 A CA002289033 A CA 002289033A CA 2289033 A CA2289033 A CA 2289033A CA 2289033 A1 CA2289033 A1 CA 2289033A1
Authority
CA
Canada
Prior art keywords
bridge amplifier
active headset
microphone
frequency range
given frequency
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.)
Granted
Application number
CA002289033A
Other languages
French (fr)
Other versions
CA2289033C (en
Inventor
Owen Jones
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.)
NCT Group Inc
Original Assignee
Nct Group, Inc.
Owen Jones
Noise Cancellation Technologies, 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
Application filed by Nct Group, Inc., Owen Jones, Noise Cancellation Technologies, Inc. filed Critical Nct Group, Inc.
Publication of CA2289033A1 publication Critical patent/CA2289033A1/en
Application granted granted Critical
Publication of CA2289033C publication Critical patent/CA2289033C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • A61F11/145—Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/128—Vehicles
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3222—Manual tuning

Abstract

An active headset providing for reduction of external noise over a given frequency range by a microphone which generates an external noise cancellation signal spectrum, wherein a bridge amplifier circuit is interposed between the microphone (10) and the loudspeaker (20) and the gain of the bridge amplifier for peak amplitude of the noise cancellation signal is user adjustable (30) without substantially reducing the breadth of the given frequency range over which noise reduction is effective.
CA002289033A 1997-04-30 1998-04-20 Active headset with bridge amplifier Expired - Fee Related CA2289033C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/846,443 US6069959A (en) 1997-04-30 1997-04-30 Active headset
US08/846,443 1997-04-30
PCT/US1998/007948 WO1998048737A1 (en) 1997-04-30 1998-04-20 Active headset with bridge amplifier

Publications (2)

Publication Number Publication Date
CA2289033A1 true CA2289033A1 (en) 1998-11-05
CA2289033C CA2289033C (en) 2005-06-14

Family

ID=25297956

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002289033A Expired - Fee Related CA2289033C (en) 1997-04-30 1998-04-20 Active headset with bridge amplifier

Country Status (7)

Country Link
US (1) US6069959A (en)
EP (1) EP1014894A4 (en)
AU (1) AU7139898A (en)
CA (1) CA2289033C (en)
MY (1) MY128422A (en)
TW (1) TW387200B (en)
WO (1) WO1998048737A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6704428B1 (en) * 1999-03-05 2004-03-09 Michael Wurtz Automatic turn-on and turn-off control for battery-powered headsets
US7215766B2 (en) * 2002-07-22 2007-05-08 Lightspeed Aviation, Inc. Headset with auxiliary input jack(s) for cell phone and/or other devices
US7327850B2 (en) * 2003-07-15 2008-02-05 Bose Corporation Supplying electrical power
US7089042B2 (en) * 2004-01-08 2006-08-08 Fellowes, Inc. Headset with variable gain based on position of microphone boom
CA2481629A1 (en) * 2004-09-15 2006-03-15 Dspfactory Ltd. Method and system for active noise cancellation
GB2479675B (en) * 2006-04-01 2011-11-30 Wolfson Microelectronics Plc Ambient noise-reduction control system
GB2445984B (en) 2007-01-25 2011-12-07 Sonaptic Ltd Ambient noise reduction
US7888907B2 (en) * 2007-10-30 2011-02-15 Bose Corporation Controlled charging and use of power source
TWI385573B (en) * 2008-08-27 2013-02-11 Realtek Semiconductor Corp Audio device and audio input/output method
US9020158B2 (en) * 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US8135140B2 (en) 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
US8718289B2 (en) * 2009-01-12 2014-05-06 Harman International Industries, Incorporated System for active noise control with parallel adaptive filter configuration
JP5253275B2 (en) * 2009-04-03 2013-07-31 セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー Amplifier circuit for condenser microphone
US8189799B2 (en) * 2009-04-09 2012-05-29 Harman International Industries, Incorporated System for active noise control based on audio system output
US8199924B2 (en) * 2009-04-17 2012-06-12 Harman International Industries, Incorporated System for active noise control with an infinite impulse response filter
US8077873B2 (en) * 2009-05-14 2011-12-13 Harman International Industries, Incorporated System for active noise control with adaptive speaker selection
WO2011161487A1 (en) 2010-06-21 2011-12-29 Nokia Corporation Apparatus, method and computer program for adjustable noise cancellation
US9837066B2 (en) 2013-07-28 2017-12-05 Light Speed Aviation, Inc. System and method for adaptive active noise reduction
US9414165B2 (en) * 2014-01-27 2016-08-09 Invensense, Inc. Acoustic sensor resonant peak reduction
CN106658255A (en) * 2016-10-21 2017-05-10 声源科技（深圳）有限公司 Filter circuit for noise reduction headset
CN108564939A (en) * 2018-06-28 2018-09-21 陈经纶 A kind of active sound field extension noise reduction system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180782A (en) * 1978-06-05 1979-12-25 Rca Corporation Phantom full-bridge amplifier
US4455675A (en) * 1982-04-28 1984-06-19 Bose Corporation Headphoning
US4721919A (en) * 1986-12-22 1988-01-26 General Motors Corporation Class G bridge amplifier with unipolar supplies
GB8717043D0 (en) * 1987-07-20 1987-08-26 Plessey Co Plc Noise reduction systems
US5138664A (en) * 1989-03-25 1992-08-11 Sony Corporation Noise reducing device
US5732143A (en) * 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
CA2107316C (en) * 1992-11-02 1996-12-17 Roger David Benning Electronic cancellation of ambient noise in telephone receivers

Also Published As

Publication number Publication date
WO1998048737A1 (en) 1998-11-05
EP1014894A4 (en) 2008-05-14
AU7139898A (en) 1998-11-24
WO1998048737A9 (en) 1999-03-25
US6069959A (en) 2000-05-30
MY128422A (en) 2007-01-31
EP1014894A1 (en) 2000-07-05
CA2289033C (en) 2005-06-14
TW387200B (en) 2000-04-11

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Legal Events

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EEER Examination request
MKLA Lapsed