NL190946C - Hoorapparaat met klasse D versterker. - Google Patents

Hoorapparaat met klasse D versterker.

Info

Publication number
NL190946C
NL190946C NL8601169A NL8601169A NL190946C NL 190946 C NL190946 C NL 190946C NL 8601169 A NL8601169 A NL 8601169A NL 8601169 A NL8601169 A NL 8601169A NL 190946 C NL190946 C NL 190946C
Authority
NL
Netherlands
Prior art keywords
amplifier
class
hearing aid
hearing
aid
Prior art date
Application number
NL8601169A
Other languages
English (en)
Dutch (nl)
Other versions
NL8601169A (nl
NL190946B (nl
Original Assignee
Knowles Electronics 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 Knowles Electronics Inc filed Critical Knowles Electronics Inc
Publication of NL8601169A publication Critical patent/NL8601169A/nl
Publication of NL190946B publication Critical patent/NL190946B/xx
Application granted granted Critical
Publication of NL190946C publication Critical patent/NL190946C/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
    • H03K3/354—Astable circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Lock And Its Accessories (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Headphones And Earphones (AREA)
NL8601169A 1986-03-19 1986-05-07 Hoorapparaat met klasse D versterker. NL190946C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06839876 US4689819B1 (en) 1983-12-08 1986-03-19 Class D hearing aid amplifier
US83987686 1986-03-19

Publications (3)

Publication Number Publication Date
NL8601169A NL8601169A (nl) 1987-10-16
NL190946B NL190946B (nl) 1994-06-01
NL190946C true NL190946C (nl) 1994-11-01

Family

ID=25280867

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8601169A NL190946C (nl) 1986-03-19 1986-05-07 Hoorapparaat met klasse D versterker.

Country Status (7)

Country Link
US (1) US4689819B1 (da)
JP (1) JPS62248399A (da)
CA (1) CA1250362A (da)
DE (1) DE3616752A1 (da)
DK (2) DK174778B1 (da)
GB (1) GB2188208B (da)
NL (1) NL190946C (da)

Families Citing this family (113)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739511A (en) * 1985-01-25 1988-04-19 Rion Kabushiki Kaisha Hearing aid
US5111506A (en) * 1989-03-02 1992-05-05 Ensonig Corporation Power efficient hearing aid
US5014016A (en) * 1989-04-13 1991-05-07 Beltone Electronics Corporation Switching amplifier
US5303306A (en) * 1989-06-06 1994-04-12 Audioscience, Inc. Hearing aid with programmable remote and method of deriving settings for configuring the hearing aid
US5099856A (en) * 1989-11-08 1992-03-31 Etymotic Research, Inc. Electrode isolation amplifier
CH679966A5 (da) * 1989-11-29 1992-05-15 Ascom Audiosys Ag
US5097472A (en) * 1990-02-22 1992-03-17 Chenausky Peter P Preionized transversely excited laser
FR2668017B1 (fr) * 1990-10-11 1993-08-06 Aide Auditive Labo Rech Acqus Circuit de stimulation electrique pour prothese cochleaire.
CH681499A5 (da) * 1990-10-30 1993-03-31 Ascom Audiosys Ag
US5126684A (en) * 1991-03-04 1992-06-30 Potter Electrical Signal Company Digital power amplifier
DK0519088T3 (da) * 1991-06-10 1995-07-03 Siemens Audiologische Technik Fremgangsmåde og kredsløbsindretning til begrænsning af et udgangssignal
US5193116A (en) * 1991-09-13 1993-03-09 Knowles Electronics, Inc. Hearing and output transducer with self contained amplifier
US5276910A (en) * 1991-09-13 1994-01-04 Resound Corporation Energy recovering hearing system
US5389829A (en) * 1991-09-27 1995-02-14 Exar Corporation Output limiter for class-D BICMOS hearing aid output amplifier
US5247581A (en) * 1991-09-27 1993-09-21 Exar Corporation Class-d bicmos hearing aid output amplifier
ATE154180T1 (de) * 1992-03-31 1997-06-15 Siemens Audiologische Technik Schaltungsanordnung mit einem schaltverstärker
US5887070A (en) * 1992-05-08 1999-03-23 Etymotic Research, Inc. High fidelity insert earphones and methods of making same
USRE40696E1 (en) * 1992-05-08 2009-04-07 Etymotic Research, Inc. High fidelity insert earphones and methods of making same
DE4221304C1 (da) * 1992-06-29 1993-09-16 Siemens Audiologische Technik Gmbh, 91058 Erlangen, De
ATE132683T1 (de) * 1992-06-29 1996-01-15 Siemens Audiologische Technik Hörgerät
DK0576700T3 (da) * 1992-06-29 1996-06-03 Siemens Audiologische Technik Høreapparat
US5448644A (en) * 1992-06-29 1995-09-05 Siemens Audiologische Technik Gmbh Hearing aid
US5230344A (en) * 1992-07-31 1993-07-27 Intelligent Hearing Systems Corp. Evoked potential processing system with spectral averaging, adaptive averaging, two dimensional filters, electrode configuration and method therefor
USD360949S (en) 1993-09-01 1995-08-01 Knowles Electronics, Inc. Hearing aid receiver
USD360948S (en) 1993-09-01 1995-08-01 Knowles Electronics, Inc. Hearing aid receiver
USD360691S (en) 1993-09-01 1995-07-25 Knowles Electronics, Inc. Hearing aid receiver
EP0676909A1 (de) * 1994-03-31 1995-10-11 Siemens Audiologische Technik GmbH Programmierbares Hörgerät
US6466678B1 (en) 1994-11-30 2002-10-15 Etymotic Research, Inc. Hearing aid having digital damping
US5812679A (en) * 1994-11-30 1998-09-22 Killion; Mead Electronic damper circuit for a hearing aid and a method of using the same
US5745587A (en) * 1995-06-07 1998-04-28 Bausch & Lomb Incorporated Hearing aid amplifier circuitry
US5815581A (en) * 1995-10-19 1998-09-29 Mitel Semiconductor, Inc. Class D hearing aid amplifier with feedback
US5838807A (en) * 1995-10-19 1998-11-17 Mitel Semiconductor, Inc. Trimmable variable compression amplifier for hearing aid
US5894522A (en) * 1996-05-08 1999-04-13 Lucent Technologies Inc. Distortion reduction system
RU2115223C1 (ru) * 1996-05-22 1998-07-10 Владимир Михайлович Мамро Двухтактный усилитель мощности
DK0944956T3 (da) * 1996-12-11 2003-05-19 Gn Netcom As Klasse forstærker
US6044162A (en) * 1996-12-20 2000-03-28 Sonic Innovations, Inc. Digital hearing aid using differential signal representations
US6091272A (en) * 1997-12-18 2000-07-18 Vlsi Technologies, Inc. Low power clock squarer with tight duty cycle control
US5963106A (en) * 1998-03-16 1999-10-05 Sonic Innovations, Inc. Double-sided pulse width modulator
US6127885A (en) * 1998-08-31 2000-10-03 Cello, Limited Class D amplifiers including transition zone modulation
US6157252A (en) * 1998-09-09 2000-12-05 The Engineering Consortium, Inc. Battery polarity insensitive integrated circuit amplifier
US6173063B1 (en) * 1998-10-06 2001-01-09 Gn Resound As Output regulator for feedback reduction in hearing aids
US7010136B1 (en) * 1999-02-17 2006-03-07 Micro Ear Technology, Inc. Resonant response matching circuit for hearing aid
NL1011778C1 (nl) 1999-04-13 2000-10-16 Microtronic Nederland Bv Microfoon voor een hoorapparaat en een hoorapparaat voorzien van een dergelijke microfoon.
US6259615B1 (en) * 1999-07-22 2001-07-10 O2 Micro International Limited High-efficiency adaptive DC/AC converter
US6804129B2 (en) * 1999-07-22 2004-10-12 02 Micro International Limited High-efficiency adaptive DC/AC converter
US6472918B1 (en) * 1999-08-23 2002-10-29 Level One Communications, Inc. Self-referencing slicer method and apparatus for high-accuracy clock duty cycle generation
US6993144B1 (en) 1999-09-30 2006-01-31 Etymotic Research, Inc. Insert earphone assembly for audiometric testing and method for making same
US20060072776A1 (en) * 1999-12-17 2006-04-06 Tejaswi Vishwamitra Amplifier and sub-woofer speaker system
US6687380B1 (en) 1999-12-17 2004-02-03 Broan-Nutone Llc Active sub-woofer speaker system
US6445233B1 (en) 1999-12-30 2002-09-03 The Engineering Consortium, Inc. Multiple time constant rectifier apparatus and method
US6405164B1 (en) 1999-12-30 2002-06-11 Engineering Consortium, Inc. Audio compression circuit and method
US6549071B1 (en) * 2000-09-12 2003-04-15 Silicon Laboratories, Inc. Power amplifier circuitry and method using an inductance coupled to power amplifier switching devices
US6590987B2 (en) * 2001-01-17 2003-07-08 Etymotic Research, Inc. Two-wired hearing aid system utilizing two-way communication for programming
US7120501B2 (en) * 2001-01-23 2006-10-10 Microphonics, Inc. Transcanal cochlear implant system
US6829364B2 (en) * 2001-06-22 2004-12-07 Topholm & Westermann Aps, Ny Hearing aid with a capacitor having a large capacitance
US7110562B1 (en) 2001-08-10 2006-09-19 Hear-Wear Technologies, Llc BTE/CIC auditory device and modular connector system therefor
US7139404B2 (en) 2001-08-10 2006-11-21 Hear-Wear Technologies, Llc BTE/CIC auditory device and modular connector system therefor
US7515446B2 (en) * 2002-04-24 2009-04-07 O2Micro International Limited High-efficiency adaptive DC/AC converter
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
US7394209B2 (en) * 2004-02-11 2008-07-01 02 Micro International Limited Liquid crystal display system with lamp feedback
RU2274947C2 (ru) * 2004-07-15 2006-04-20 Открытое Акционерное Общество "Научно-Производственное Предприятие "Дальняя связь" Двухтактный усилитель мощности
US7668325B2 (en) 2005-05-03 2010-02-23 Earlens Corporation Hearing system having an open chamber for housing components and reducing the occlusion effect
US8295523B2 (en) 2007-10-04 2012-10-23 SoundBeam LLC Energy delivery and microphone placement methods for improved comfort in an open canal hearing aid
US7867160B2 (en) 2004-10-12 2011-01-11 Earlens Corporation Systems and methods for photo-mechanical hearing transduction
CN101473532B (zh) * 2006-09-11 2013-06-12 半导体元件工业有限责任公司 放大电路及其方法
US7889875B2 (en) * 2006-11-09 2011-02-15 National Chiao Tung University Class-D driving method for stereo load
US8023586B2 (en) * 2007-02-15 2011-09-20 Med-El Elektromedizinische Geraete Gmbh Inductive power and data transmission system based on class D and amplitude shift keying
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
EP2208367B1 (en) 2007-10-12 2017-09-27 Earlens Corporation Multifunction system and method for integrated hearing and communiction with noise cancellation and feedback management
US8046192B2 (en) * 2008-02-29 2011-10-25 Smurfit-Stone Container Enterprises, Inc. Baler machine monitoring and performance interfaces, systems and methods
WO2009155361A1 (en) 2008-06-17 2009-12-23 Earlens Corporation Optical electro-mechanical hearing devices with combined power and signal architectures
US8396239B2 (en) 2008-06-17 2013-03-12 Earlens Corporation Optical electro-mechanical hearing devices with combined power and signal architectures
BRPI0915203A2 (pt) 2008-06-17 2016-02-16 Earlens Corp dispostivo, sistema e método para transmitir um sinal de áudio, e, dispostivo e método para estimular um tecido alvo
US8160284B2 (en) * 2008-09-09 2012-04-17 Etymotic Research, Inc. Amplification circuit and hearing aid
EP3509324B1 (en) 2008-09-22 2023-08-16 Earlens Corporation Balanced armature devices and methods for hearing
US8588880B2 (en) 2009-02-16 2013-11-19 Masimo Corporation Ear sensor
US20100246866A1 (en) * 2009-03-24 2010-09-30 Swat/Acr Portfolio Llc Method and Apparatus for Implementing Hearing Aid with Array of Processors
TWI392214B (zh) * 2009-06-04 2013-04-01 Univ Nat Chiao Tung The driving device and driving method of multi - phase straight / AC converter
CN102598712A (zh) 2009-06-05 2012-07-18 音束有限责任公司 光耦合的中耳植入体声学系统和方法
US9544700B2 (en) 2009-06-15 2017-01-10 Earlens Corporation Optically coupled active ossicular replacement prosthesis
US10286215B2 (en) 2009-06-18 2019-05-14 Earlens Corporation Optically coupled cochlear implant systems and methods
US8401214B2 (en) 2009-06-18 2013-03-19 Earlens Corporation Eardrum implantable devices for hearing systems and methods
WO2011005500A2 (en) 2009-06-22 2011-01-13 SoundBeam LLC Round window coupled hearing systems and methods
CN102598715B (zh) 2009-06-22 2015-08-05 伊尔莱茵斯公司 光耦合骨传导设备、系统及方法
WO2010151636A2 (en) 2009-06-24 2010-12-29 SoundBeam LLC Optical cochlear stimulation devices and methods
WO2010151647A2 (en) 2009-06-24 2010-12-29 SoundBeam LLC Optically coupled cochlear actuator systems and methods
US8649540B2 (en) * 2009-10-30 2014-02-11 Etymotic Research, Inc. Electronic earplug
EP2378793B1 (en) * 2010-04-14 2013-01-23 GN Resound A/S Hearing instrument configured for wireless communication in bursts and a method of supplying power to such
EP2656639B1 (en) 2010-12-20 2020-05-13 Earlens Corporation Anatomically customized ear canal hearing apparatus
EP2469705B1 (en) 2010-12-21 2015-12-02 Sonion Nederland B.V. Generation of a supply voltage from output of a class-D audio amplifier
US9590571B2 (en) 2012-10-02 2017-03-07 Knowles Electronics, Llc Single stage buffer with filter
US9402131B2 (en) 2013-10-30 2016-07-26 Knowles Electronics, Llc Push-pull microphone buffer
US10034103B2 (en) 2014-03-18 2018-07-24 Earlens Corporation High fidelity and reduced feedback contact hearing apparatus and methods
EP3169396B1 (en) 2014-07-14 2021-04-21 Earlens Corporation Sliding bias and peak limiting for optical hearing devices
US9485594B2 (en) 2014-08-06 2016-11-01 Knowles Electronics, Llc Connector arrangement in hearing instruments
US9924276B2 (en) 2014-11-26 2018-03-20 Earlens Corporation Adjustable venting for hearing instruments
WO2017011461A1 (en) 2015-07-15 2017-01-19 Knowles Electronics, Llc Hybrid transducer
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
DK3888564T3 (da) 2015-10-02 2025-07-14 Earlens Corp Indretning til tilpasset afgivelse af medicin i øregangen
US9843292B2 (en) 2015-10-14 2017-12-12 Knowles Electronics, Llc Method and apparatus for maintaining DC bias
WO2017083679A1 (en) 2015-11-12 2017-05-18 Knowles Electronics, Llc Method and apparatus to increase audio band microphone sensitivity
US20170195806A1 (en) 2015-12-30 2017-07-06 Earlens Corporation Battery coating for rechargable hearing systems
US10492010B2 (en) 2015-12-30 2019-11-26 Earlens Corporations Damping in contact hearing systems
US11350226B2 (en) 2015-12-30 2022-05-31 Earlens Corporation Charging protocol for rechargeable hearing systems
WO2018048794A1 (en) 2016-09-09 2018-03-15 Earlens Corporation Contact hearing systems, apparatus and methods
EP3319215B1 (en) * 2016-11-03 2020-12-23 GN Hearing A/S Hearing instrument comprising switched capacitor dc-dc power converter
WO2018093733A1 (en) 2016-11-15 2018-05-24 Earlens Corporation Improved impression procedure
DK3343956T3 (en) 2016-12-30 2021-05-03 Sonion Nederland Bv A circuit and a receiver comprising the circuit
WO2019164529A1 (en) * 2018-02-26 2019-08-29 Hewlett-Packard Development Company, L.P. Acoustic transducers with pole plates
WO2019173470A1 (en) 2018-03-07 2019-09-12 Earlens Corporation Contact hearing device and retention structure materials
US11115744B2 (en) 2018-04-02 2021-09-07 Knowles Electronics, Llc Audio device with conduit connector
WO2019199680A1 (en) 2018-04-09 2019-10-17 Earlens Corporation Dynamic filter
CN110460796B (zh) * 2019-08-30 2021-04-27 中瑞恒（北京）科技有限公司 一种工业设备运行监控信号调节电路

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995114A (en) * 1974-05-09 1976-11-30 Dahlberg Electronics, Inc. Ultra low current amplifier
JPS525204A (en) * 1975-07-01 1977-01-14 Seiko Epson Corp Hearing aid
GB1541004A (en) * 1975-11-07 1979-02-21 Nat Res Dev Hearing aid
US4016501A (en) * 1975-12-29 1977-04-05 Motorola, Inc. Switching amplifier system
DE7907666U1 (de) * 1979-03-19 1980-08-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hoerhilfegeraet
US4361734A (en) * 1980-07-21 1982-11-30 Kahn Arthur R Hearing aid
US4396806B2 (en) * 1980-10-20 1998-06-02 A & L Ventures I Hearing aid amplifier
DE3151352A1 (de) * 1981-01-09 1982-09-02 National Research Development Corp., London "hoerhilfe"
DE8106942U1 (de) * 1981-03-11 1982-07-15 Siemens AG, 1000 Berlin und 8000 München Im ohr zu tragendes hoerhilfegeraet
JPS5857199U (ja) * 1981-10-13 1983-04-18 リオン株式会社 補聴器
DE3205685A1 (de) * 1982-02-17 1983-08-25 Robert Bosch Gmbh, 7000 Stuttgart Hoergeraet
DE3205686A1 (de) * 1982-02-17 1983-08-25 Robert Bosch Gmbh, 7000 Stuttgart Hoergeraet
FR2522451B1 (fr) * 1982-03-01 1988-10-14 Audibel Perfectionnement au circuit de controle automatique de gain d'un systeme d'amplification a transistors et appareil de correction auditive equipe d'un tel circuit
AT372812B (de) * 1982-04-07 1983-11-25 Viennatone Gmbh Im ohr hoergeraet
DE3231030A1 (de) * 1982-08-20 1984-02-23 Robert Bosch Gmbh, 7000 Stuttgart Mehrstufiger hoergeraeteverstaerker
US4463318A (en) * 1982-08-30 1984-07-31 Rca Corporation Power amplifier circuit employing field-effect power transistors
CH658354A5 (de) * 1983-01-11 1986-10-31 Gfeller Ag Hoergeraet mit einstellbaren charakteristischen werten.
US4471490A (en) * 1983-02-16 1984-09-11 Gaspare Bellafiore Hearing aid
US4592087B1 (en) * 1983-12-08 1996-08-13 Knowles Electronics Inc Class D hearing aid amplifier
AT379724B (de) * 1984-04-16 1986-02-25 Viennatone Gmbh Aktive tonblende fuer hoergeraete
DE3431584A1 (de) * 1984-08-28 1986-03-13 Siemens AG, 1000 Berlin und 8000 München Hoerhilfegeraet
DE8517421U1 (de) * 1985-06-14 1985-08-01 Dreve, Wolfgang, 4750 Unna Im-Ohr-Hörgerät

Also Published As

Publication number Publication date
GB2188208B (en) 1989-11-29
DK33292D0 (da) 1992-03-12
DE3616752A1 (de) 1988-01-07
DK33292A (da) 1992-03-12
JPS62248399A (ja) 1987-10-29
US4689819A (en) 1987-08-25
GB8609052D0 (en) 1986-05-21
US4689819B1 (en) 1996-08-13
GB2188208A (en) 1987-09-23
DE3616752C2 (da) 1988-08-04
DK174778B1 (da) 2003-11-03
DK209786A (da) 1987-09-20
CA1250362A (en) 1989-02-21
NL8601169A (nl) 1987-10-16
NL190946B (nl) 1994-06-01
JPH0445040B2 (da) 1992-07-23
DK209786D0 (da) 1986-05-06

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A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: KNOWLES ELECTRONICS, INC.

SNR Assignments of patents or rights arising from examined patent applications

Owner name: KNOWLES ELECTRONICS, LLC

V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20060507