DK0781446T3 - Retningsbestemt øreanordning med adaptiv båndvidde og forstærkningskontrol - Google Patents

Retningsbestemt øreanordning med adaptiv båndvidde og forstærkningskontrol

Info

Publication number
DK0781446T3
DK0781446T3 DK95928089T DK95928089T DK0781446T3 DK 0781446 T3 DK0781446 T3 DK 0781446T3 DK 95928089 T DK95928089 T DK 95928089T DK 95928089 T DK95928089 T DK 95928089T DK 0781446 T3 DK0781446 T3 DK 0781446T3
Authority
DK
Denmark
Prior art keywords
gain control
ear device
adaptive bandwidth
directional ear
directional
Prior art date
Application number
DK95928089T
Other languages
Danish (da)
English (en)
Inventor
David A Hotvet
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Application granted granted Critical
Publication of DK0781446T3 publication Critical patent/DK0781446T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Psychology (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
DK95928089T 1994-09-02 1995-07-19 Retningsbestemt øreanordning med adaptiv båndvidde og forstærkningskontrol DK0781446T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/300,345 US5550923A (en) 1994-09-02 1994-09-02 Directional ear device with adaptive bandwidth and gain control
PCT/US1995/009115 WO1996008004A1 (en) 1994-09-02 1995-07-19 Directional ear device with adaptive bandwidth and gain control

Publications (1)

Publication Number Publication Date
DK0781446T3 true DK0781446T3 (da) 1999-07-19

Family

ID=23158716

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95928089T DK0781446T3 (da) 1994-09-02 1995-07-19 Retningsbestemt øreanordning med adaptiv båndvidde og forstærkningskontrol

Country Status (8)

Country Link
US (1) US5550923A (de)
EP (1) EP0781446B1 (de)
JP (1) JPH10505475A (de)
CA (1) CA2197661C (de)
DE (1) DE69505833T2 (de)
DK (1) DK0781446T3 (de)
ES (1) ES2123279T3 (de)
WO (1) WO1996008004A1 (de)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8085959B2 (en) * 1994-07-08 2011-12-27 Brigham Young University Hearing compensation system incorporating signal processing techniques
US6072885A (en) * 1994-07-08 2000-06-06 Sonic Innovations, Inc. Hearing aid device incorporating signal processing techniques
AUPM900594A0 (en) * 1994-10-24 1994-11-17 Cochlear Pty. Limited Automatic sensitivity control
US6978159B2 (en) 1996-06-19 2005-12-20 Board Of Trustees Of The University Of Illinois Binaural signal processing using multiple acoustic sensors and digital filtering
US6987856B1 (en) 1996-06-19 2006-01-17 Board Of Trustees Of The University Of Illinois Binaural signal processing techniques
US5903655A (en) * 1996-10-23 1999-05-11 Telex Communications, Inc. Compression systems for hearing aids
AU6168099A (en) * 1998-09-30 2000-04-17 House Ear Institute Band-limited adaptive feedback canceller for hearing aids
US6876751B1 (en) * 1998-09-30 2005-04-05 House Ear Institute Band-limited adaptive feedback canceller for hearing aids
US6405164B1 (en) 1999-12-30 2002-06-11 Engineering Consortium, Inc. Audio compression circuit and method
US6445233B1 (en) 1999-12-30 2002-09-03 The Engineering Consortium, Inc. Multiple time constant rectifier apparatus and method
US7206423B1 (en) 2000-05-10 2007-04-17 Board Of Trustees Of University Of Illinois Intrabody communication for a hearing aid
AU2001261344A1 (en) * 2000-05-10 2001-11-20 The Board Of Trustees Of The University Of Illinois Interference suppression techniques
US6801629B2 (en) * 2000-12-22 2004-10-05 Sonic Innovations, Inc. Protective hearing devices with multi-band automatic amplitude control and active noise attenuation
DE10249416B4 (de) 2002-10-23 2009-07-30 Siemens Audiologische Technik Gmbh Verfahren zum Einstellen und zum Betrieb eines Hörhilfegerätes sowie Hörhilfegerät
US7512448B2 (en) 2003-01-10 2009-03-31 Phonak Ag Electrode placement for wireless intrabody communication between components of a hearing system
DE10310580A1 (de) * 2003-03-11 2004-10-07 Siemens Audiologische Technik Gmbh Vorrichtung und Verfahren zur Adaption von Hörgerätemikrofonen
US7352871B1 (en) 2003-07-24 2008-04-01 Mozo Ben T Apparatus for communication and reconnaissance coupled with protection of the auditory system
US20050058313A1 (en) 2003-09-11 2005-03-17 Victorian Thomas A. External ear canal voice detection
SE526944C2 (sv) * 2003-11-27 2005-11-22 Peltor Ab Hörselskydd
US20050238181A1 (en) * 2003-11-27 2005-10-27 Sigvard Nilsson Hearing protector
US20050129252A1 (en) * 2003-12-12 2005-06-16 International Business Machines Corporation Audio presentations based on environmental context and user preferences
US20050128192A1 (en) * 2003-12-12 2005-06-16 International Business Machines Corporation Modifying visual presentations based on environmental context and user preferences
WO2006026812A2 (en) * 2004-09-07 2006-03-16 Sensear Pty Ltd Apparatus and method for sound enhancement
SE528515C2 (sv) * 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa med mikrofonanordning
SE528514C2 (sv) 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa
SE528519C2 (sv) * 2005-04-29 2006-12-05 Peltor Ab Hörselkåpa
US8238576B2 (en) * 2005-06-30 2012-08-07 Cirrus Logic, Inc. Level dependent bass management
DE102005036867A1 (de) * 2005-07-15 2007-01-18 Daimlerchrysler Ag Sicherstellung der Privatsphäre bei Lautsprecherausgaben
TWI315830B (en) * 2005-09-05 2009-10-11 Hon Hai Prec Ind Co Ltd An audio processing system and method
TWI283355B (en) * 2005-09-05 2007-07-01 Hon Hai Prec Ind Co Ltd An audio processing system and method
WO2007028246A1 (en) * 2005-09-08 2007-03-15 Sonami Communications Inc. Method and apparatus for directional enhancement of speech elements in noisy environments
TW200720988A (en) * 2005-11-18 2007-06-01 Hon Hai Prec Ind Co Ltd System and method for managing volume
TWI274472B (en) * 2005-11-25 2007-02-21 Hon Hai Prec Ind Co Ltd System and method for managing volume
CN101026363B (zh) * 2006-02-18 2010-12-08 鸿富锦精密工业（深圳）有限公司 保护听力的系统、方法及声音输出装置
US7903825B1 (en) 2006-03-03 2011-03-08 Cirrus Logic, Inc. Personal audio playback device having gain control responsive to environmental sounds
CN101060313B (zh) * 2006-04-19 2012-06-20 鸿富锦精密工业（深圳）有限公司 保护听力的方法及声音输出装置
CN101060314B (zh) * 2006-04-19 2011-06-08 鸿富锦精密工业（深圳）有限公司 保护听力的方法及声音输出装置
WO2007147077A2 (en) 2006-06-14 2007-12-21 Personics Holdings Inc. Earguard monitoring system
SE530023C2 (sv) * 2006-06-20 2008-02-12 Peltor Ab Hörselkåpa
US11750965B2 (en) 2007-03-07 2023-09-05 Staton Techiya, Llc Acoustic dampening compensation system
US11856375B2 (en) 2007-05-04 2023-12-26 Staton Techiya Llc Method and device for in-ear echo suppression
US11683643B2 (en) 2007-05-04 2023-06-20 Staton Techiya Llc Method and device for in ear canal echo suppression
JP2008301069A (ja) * 2007-05-30 2008-12-11 Audio Technica Corp 出力信号のオーバーフロー防止方法及びデジタル信号処理装置
SE531700C2 (sv) * 2007-09-28 2009-07-14 Msa Sordin Ab System för hörselskydd, innefattande en yttre hörselskyddande enhet och en inre hörselskyddande enhet
GB0725115D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Split filter
SE532379C2 (sv) * 2008-03-26 2009-12-29 3M Svenska Ab Hörselskydd innefattande behandlingsanordningar för behandling av repeterbart och icke-repeterbart buller
SE531656E5 (sv) * 2008-05-12 2011-04-26 3M Svenska Ab Hörselskydd
US8600067B2 (en) 2008-09-19 2013-12-03 Personics Holdings Inc. Acoustic sealing analysis system
US9219964B2 (en) 2009-04-01 2015-12-22 Starkey Laboratories, Inc. Hearing assistance system with own voice detection
US8477973B2 (en) 2009-04-01 2013-07-02 Starkey Laboratories, Inc. Hearing assistance system with own voice detection
US8379872B2 (en) * 2009-06-01 2013-02-19 Red Tail Hawk Corporation Talk-through listening device channel switching
US20110135117A1 (en) * 2009-12-04 2011-06-09 Sony Ericsson Mobile Communications Ab Enhanced surround sound experience
US9215527B1 (en) 2009-12-14 2015-12-15 Cirrus Logic, Inc. Multi-band integrated speech separating microphone array processor with adaptive beamforming
US8908877B2 (en) * 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
US20140100714A1 (en) * 2012-10-04 2014-04-10 Ford Global Technologies, Llc Vehicular squeak and rattle detection
US9831843B1 (en) 2013-09-05 2017-11-28 Cirrus Logic, Inc. Opportunistic playback state changes for audio devices
US9391576B1 (en) 2013-09-05 2016-07-12 Cirrus Logic, Inc. Enhancement of dynamic range of audio signal path
EP3611932A3 (de) * 2013-10-28 2020-09-16 3M Innovative Properties Company Adaptiver frequenzgang, adaptive automatische pegelregelung und handhabung von funkkommunikation für einen gehörschütz
US10043534B2 (en) 2013-12-23 2018-08-07 Staton Techiya, Llc Method and device for spectral expansion for an audio signal
US9774342B1 (en) 2014-03-05 2017-09-26 Cirrus Logic, Inc. Multi-path analog front end and analog-to-digital converter for a signal processing system
US9525940B1 (en) 2014-03-05 2016-12-20 Cirrus Logic, Inc. Multi-path analog front end and analog-to-digital converter for a signal processing system
US9306588B2 (en) 2014-04-14 2016-04-05 Cirrus Logic, Inc. Switchable secondary playback path
US10785568B2 (en) 2014-06-26 2020-09-22 Cirrus Logic, Inc. Reducing audio artifacts in a system for enhancing dynamic range of audio signal path
US9900689B2 (en) * 2014-06-30 2018-02-20 Harman International Industries Incorporated Adaptive detector and auto mode for dynamics processor
US9596537B2 (en) 2014-09-11 2017-03-14 Cirrus Logic, Inc. Systems and methods for reduction of audio artifacts in an audio system with dynamic range enhancement
US10163453B2 (en) 2014-10-24 2018-12-25 Staton Techiya, Llc Robust voice activity detector system for use with an earphone
US9503027B2 (en) 2014-10-27 2016-11-22 Cirrus Logic, Inc. Systems and methods for dynamic range enhancement using an open-loop modulator in parallel with a closed-loop modulator
US9584911B2 (en) 2015-03-27 2017-02-28 Cirrus Logic, Inc. Multichip dynamic range enhancement (DRE) audio processing methods and apparatuses
US9959856B2 (en) 2015-06-15 2018-05-01 Cirrus Logic, Inc. Systems and methods for reducing artifacts and improving performance of a multi-path analog-to-digital converter
US9955254B2 (en) 2015-11-25 2018-04-24 Cirrus Logic, Inc. Systems and methods for preventing distortion due to supply-based modulation index changes in an audio playback system
US9543975B1 (en) 2015-12-29 2017-01-10 Cirrus Logic, Inc. Multi-path analog front end and analog-to-digital converter for a signal processing system with low-pass filter between paths
US9880802B2 (en) 2016-01-21 2018-01-30 Cirrus Logic, Inc. Systems and methods for reducing audio artifacts from switching between paths of a multi-path signal processing system
US10616693B2 (en) 2016-01-22 2020-04-07 Staton Techiya Llc System and method for efficiency among devices
US9998826B2 (en) 2016-06-28 2018-06-12 Cirrus Logic, Inc. Optimization of performance and power in audio system
US10545561B2 (en) 2016-08-10 2020-01-28 Cirrus Logic, Inc. Multi-path digitation based on input signal fidelity and output requirements
US10263630B2 (en) 2016-08-11 2019-04-16 Cirrus Logic, Inc. Multi-path analog front end with adaptive path
US9813814B1 (en) 2016-08-23 2017-11-07 Cirrus Logic, Inc. Enhancing dynamic range based on spectral content of signal
US9780800B1 (en) 2016-09-19 2017-10-03 Cirrus Logic, Inc. Matching paths in a multiple path analog-to-digital converter
US9762255B1 (en) 2016-09-19 2017-09-12 Cirrus Logic, Inc. Reconfiguring paths in a multiple path analog-to-digital converter
US9929703B1 (en) 2016-09-27 2018-03-27 Cirrus Logic, Inc. Amplifier with configurable final output stage
EP3520433A2 (de) * 2016-09-28 2019-08-07 3M Innovative Properties Company Adaptive elektronische gehörschutzvorrichtung
US9967665B2 (en) 2016-10-05 2018-05-08 Cirrus Logic, Inc. Adaptation of dynamic range enhancement based on noise floor of signal
CN110915238B (zh) * 2017-01-03 2022-04-05 立声公司 语音清晰度增强系统
US10321230B2 (en) 2017-04-07 2019-06-11 Cirrus Logic, Inc. Switching in an audio system with multiple playback paths
US10008992B1 (en) 2017-04-14 2018-06-26 Cirrus Logic, Inc. Switching in amplifier with configurable final output stage
US9917557B1 (en) 2017-04-17 2018-03-13 Cirrus Logic, Inc. Calibration for amplifier with configurable final output stage
US10951994B2 (en) 2018-04-04 2021-03-16 Staton Techiya, Llc Method to acquire preferred dynamic range function for speech enhancement
EP3829785A1 (de) * 2018-08-03 2021-06-09 UAB "Neurotechnology" Verfahren zur erzeugung von parametrischem schall und mittel zur durchführung des verfahrens

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306991A (en) * 1963-06-04 1967-02-28 Homer J Wood Protective hearing aid
US3394226A (en) * 1963-08-19 1968-07-23 Daniel E. Andrews Jr. Special purpose hearing aid
US3573400A (en) * 1968-08-14 1971-04-06 Bell Telephone Labor Inc Directional microphone
US3678416A (en) * 1971-07-26 1972-07-18 Richard S Burwen Dynamic noise filter having means for varying cutoff point
US3952158A (en) * 1974-08-26 1976-04-20 Kyle Gordon L Ear protection and hearing device
DE2460535A1 (de) * 1974-12-20 1976-06-24 Fraunhofer Ges Forschung Persoenlicher schallschutz mit signalangepasster stoerunterdrueckung und erhaltung des richtungshoerens
DE2658301C2 (de) * 1976-12-22 1978-12-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hörgerät
US4061875A (en) * 1977-02-22 1977-12-06 Stephen Freifeld Audio processor for use in high noise environments
JPS5857199U (ja) * 1981-10-13 1983-04-18 リオン株式会社 補聴器
AT383428B (de) * 1984-03-22 1987-07-10 Goerike Rudolf Brillengestell zur verbesserung des natuerlichen hoerens
US4701953A (en) * 1984-07-24 1987-10-20 The Regents Of The University Of California Signal compression system
JP2562295B2 (ja) * 1985-11-19 1996-12-11 株式会社 オ−デイオテクニカ 狭指向性マイクロホン
US4928311A (en) * 1986-01-03 1990-05-22 Trompler Lyle D Noise limiting circuit for earmuffs
US4718099A (en) * 1986-01-29 1988-01-05 Telex Communications, Inc. Automatic gain control for hearing aid
US4750207A (en) * 1986-03-31 1988-06-07 Siemens Hearing Instruments, Inc. Hearing aid noise suppression system
US4790018A (en) * 1987-02-11 1988-12-06 Argosy Electronics Frequency selection circuit for hearing aids
US4969534A (en) * 1988-08-08 1990-11-13 Minnesota Mining And Manufacturing Company Hearing aid employing a viscoelastic material to adhere components to the casing
US5027410A (en) * 1988-11-10 1991-06-25 Wisconsin Alumni Research Foundation Adaptive, programmable signal processing and filtering for hearing aids
US5070527A (en) * 1989-03-02 1991-12-03 Acs Communications, Inc. Time dependant, variable amplitude threshold output circuit for frequency variant and frequency invarient signal discrimination
AT407815B (de) * 1990-07-13 2001-06-25 Viennatone Gmbh Hörgerät
JPH0491542A (ja) * 1990-08-07 1992-03-25 Fujitsu Ltd 指向性マイクモジュール及び該モジュールを備えた電話機用ハンドセット
US5285502A (en) * 1992-03-31 1994-02-08 Auditory System Technologies, Inc. Aid to hearing speech in a noisy environment
DK0639962T3 (da) * 1992-04-30 1999-10-25 Noise Cancellation Tech Håndfri støjannulleringshovedtelefon
US5257420A (en) * 1992-07-31 1993-11-02 Hearz, Inc. Earmuffs for use with headphones
US5355418A (en) * 1992-10-07 1994-10-11 Westinghouse Electric Corporation Frequency selective sound blocking system for hearing protection
WO1994027525A1 (en) * 1993-05-21 1994-12-08 Noise Cancellation Technologies, Inc. Active ear defender
US5402498A (en) * 1993-10-04 1995-03-28 Waller, Jr.; James K. Automatic intelligent audio-tracking response circuit

Also Published As

Publication number Publication date
ES2123279T3 (es) 1999-01-01
DE69505833T2 (de) 1999-04-01
CA2197661A1 (en) 1996-03-14
EP0781446A1 (de) 1997-07-02
DE69505833D1 (de) 1998-12-10
EP0781446B1 (de) 1998-11-04
JPH10505475A (ja) 1998-05-26
US5550923A (en) 1996-08-27
CA2197661C (en) 2004-11-30
WO1996008004A1 (en) 1996-03-14

Similar Documents

Publication Publication Date Title
DK0781446T3 (da) Retningsbestemt øreanordning med adaptiv båndvidde og forstærkningskontrol
DE69331353D1 (de) Adaptiver Entzerrer und Empfänger
DE60042105D1 (de) Qualitätskontrollmethode und -Gerät
DE69827228D1 (de) Verstärkungsverfahren und -gerät mit niedriger Intermodulationsverzerrung
DE69736502D1 (de) Verstärkungsregler
DE69230537D1 (de) Kommunikationsvorrichtung mit lautsprecher und mikrofon
DK0749263T3 (da) Hovedtelefon med regulerbar ørekrog
DK97997A (da) T Retningsfølsomt høreapparat
ZA997515B (en) Selective nonlinear attenuating earplug.
NO915020D0 (no) Integrert dykkeransiktsmaske og ultralyd- og undervannskommunikasjonsanordning
DE19781940T1 (de) Mittelohrwandler
DE69533973D1 (de) Schallfeldkontrollegerät und Kontrolleverfahren
DE69636643D1 (de) Verstärker mit db-linearer verstärkungsregelung
TW391618U (en) Adjustable earphone with microphone
DE10007998B4 (de) Adaptives Antennenrichtwirkungssteuerungsverfahren und System dafür
DE69404369D1 (de) Stereoultrarichtmikrophongerät
DE69805899D1 (de) Richtstrahlantenne und Richtstrahlsteuerungsgerät
DE69402413D1 (de) Ohrschützen mit einem aktiven lärmkontrollgerät
DE69331686D1 (de) Variabler Entzerrungsverstärker
NO993128D0 (no) Adaptivt forforvrengningssystem
FI981127A (fi) Ääniohjausmenetelmä ja äänellä ohjattava laite
EP1003298A4 (de) Adaptive richtcharakteristik übertragungsvorrichtung und verfahren
DE69919281D1 (de) Radioempfänger und zugehöriger verstärker mit verstärkungsregelung
DE69913359D1 (de) Einstellungssteuerungsystem und -verfahren
NO921938L (no) Fremgangsmaate og innretning for ultralydkontroll