DK305676A - Kredslob til signalkompression eller ekspansion - Google Patents

Kredslob til signalkompression eller ekspansion

Info

Publication number
DK305676A
DK305676A DK305676A DK305676A DK305676A DK 305676 A DK305676 A DK 305676A DK 305676 A DK305676 A DK 305676A DK 305676 A DK305676 A DK 305676A DK 305676 A DK305676 A DK 305676A
Authority
DK
Denmark
Prior art keywords
expansion
circuit
signal compression
compression
signal
Prior art date
Application number
DK305676A
Other languages
Danish (da)
English (en)
Inventor
V O Blackledge
Original Assignee
Hearing Health Group
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 Hearing Health Group filed Critical Hearing Health Group
Publication of DK305676A publication Critical patent/DK305676A/da

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
    • H04R25/35—Electric hearing aids using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • 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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
DK305676A 1975-07-07 1976-07-06 Kredslob til signalkompression eller ekspansion DK305676A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/593,306 US4025723A (en) 1975-07-07 1975-07-07 Real time amplitude control of electrical waves

Publications (1)

Publication Number Publication Date
DK305676A true DK305676A (da) 1977-01-08

Family

ID=24374229

Family Applications (1)

Application Number Title Priority Date Filing Date
DK305676A DK305676A (da) 1975-07-07 1976-07-06 Kredslob til signalkompression eller ekspansion

Country Status (9)

Country Link
US (1) US4025723A (show.php)
JP (1) JPS5210014A (show.php)
AT (1) ATA488976A (show.php)
CA (1) CA1061255A (show.php)
CH (1) CH607449A5 (show.php)
DE (1) DE2628626A1 (show.php)
DK (1) DK305676A (show.php)
GB (1) GB1553277A (show.php)
NL (1) NL7607515A (show.php)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099035A (en) * 1976-07-20 1978-07-04 Paul Yanick Hearing aid with recruitment compensation
US4114115A (en) * 1976-11-04 1978-09-12 California Microwave, Inc. Compandor apparatus
US4177356A (en) * 1977-10-20 1979-12-04 Dbx Inc. Signal enhancement system
US4400583A (en) * 1979-07-20 1983-08-23 Metme Communications Complete audio processing system
US4457014A (en) * 1980-10-03 1984-06-26 Metme Communications Signal transfer and system utilizing transmission lines
US4409435A (en) * 1980-10-03 1983-10-11 Gen Engineering Co., Ltd. Hearing aid suitable for use under noisy circumstance
US4400590A (en) * 1980-12-22 1983-08-23 The Regents Of The University Of California Apparatus for multichannel cochlear implant hearing aid system
DE3131193A1 (de) * 1981-08-06 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Geraet zur kompensation von gehoerschaeden
US4536888A (en) * 1981-08-21 1985-08-20 Plantronics, Inc. Voice communication instrument system with line-powered receiver conditioning circuit
JPS59500297A (ja) * 1981-08-26 1984-02-23 ブロイ、グラハム　フイリップ 線路方式を用いた変調信号の転送を最大効率で行なわせるためのシステム
EP0081916B1 (en) * 1981-12-11 1985-12-27 BURROUGHS CORPORATION (a Delaware corporation) Improvements in and relating to differential signal decoders
GB2124456A (en) * 1982-01-26 1984-02-15 Bloy Graham P System for maximum efficient transfer of modulated energy
US4539526A (en) * 1983-01-31 1985-09-03 Dbx, Inc. Adaptive signal weighting system
AU569591B2 (en) * 1983-10-25 1988-02-11 Australian Hearing Services Hearing aid amplification method and apparatus
EP0160054A1 (en) * 1983-10-25 1985-11-06 The Commonwealth Of Australia Hearing aid amplification method and apparatus
US4837832A (en) * 1987-10-20 1989-06-06 Sol Fanshel Electronic hearing aid with gain control means for eliminating low frequency noise
US4879746A (en) * 1987-12-30 1989-11-07 Plantronics, Inc. Voice communication link interface apparatus
US5014319A (en) * 1988-02-15 1991-05-07 Avr Communications Ltd. Frequency transposing hearing aid
US5876425A (en) * 1989-09-22 1999-03-02 Advanced Bionics Corporation Power control loop for implantable tissue stimulator
US5603726A (en) * 1989-09-22 1997-02-18 Alfred E. Mann Foundation For Scientific Research Multichannel cochlear implant system including wearable speech processor
DE4238882A1 (de) * 1992-11-19 1994-05-26 Thomson Brandt Gmbh Rundfunkempfänger
US5500902A (en) * 1994-07-08 1996-03-19 Stockham, Jr.; Thomas G. Hearing aid device incorporating signal processing techniques
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
WO1997014266A2 (en) * 1995-10-10 1997-04-17 Audiologic, Inc. Digital signal processing hearing aid with processing strategy selection
US7010491B1 (en) * 1999-12-09 2006-03-07 Roland Corporation Method and system for waveform compression and expansion with time axis
DE10018666A1 (de) 2000-04-14 2001-10-18 Harman Audio Electronic Sys Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
US20040125962A1 (en) * 2000-04-14 2004-07-01 Markus Christoph Method and apparatus for dynamic sound optimization
EP1618559A1 (en) * 2003-04-24 2006-01-25 Massachusetts Institute Of Technology System and method for spectral enhancement employing compression and expansion
DE102005004766B4 (de) * 2004-02-04 2009-06-25 Gedo Lienemann Verfahren zum Aufbereiten von Schallsignalen, insbesondere für das Zurverfügungstellen von aufzubereitenden Schallsignalen für schwerhörige Personen, und Vorrichtung zum Aufbereiten von Schallsignalen
DE602004004242T2 (de) * 2004-03-19 2008-06-05 Harman Becker Automotive Systems Gmbh System und Verfahren zur Verbesserung eines Audiosignals
EP1619793B1 (en) * 2004-07-20 2015-06-17 Harman Becker Automotive Systems GmbH Audio enhancement system and method
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
DE602005015426D1 (de) 2005-05-04 2009-08-27 Harman Becker Automotive Sys System und Verfahren zur Intensivierung von Audiosignalen
US7672842B2 (en) * 2006-07-26 2010-03-02 Mitsubishi Electric Research Laboratories, Inc. Method and system for FFT-based companding for automatic speech recognition
US20110135112A1 (en) * 2008-04-10 2011-06-09 Sharp Kabushiki Kaisha Audio signal processing device and audio signal processing method
CN103650041B (zh) 2011-09-15 2015-11-25 三菱电机株式会社 动态范围控制装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1550684A (en) * 1924-09-19 1925-08-25 American Telephone & Telegraph Prevention of overloading in speech circuits
US2287077A (en) * 1941-07-19 1942-06-23 Bell Telephone Labor Inc Volume range control in signal transmission systems
US2340364A (en) * 1942-08-22 1944-02-01 Rca Corp Audio transmission circuit
US3229049A (en) * 1960-08-04 1966-01-11 Goldberg Hyman Hearing aid
US3180936A (en) * 1960-12-01 1965-04-27 Bell Telephone Labor Inc Apparatus for suppressing noise and distortion in communication signals
US3769611A (en) * 1971-08-25 1973-10-30 Cmx Systems Inc Noise reduction system
US3784750A (en) * 1972-02-25 1974-01-08 Shalako Resource Systems Apparatus and prosthetic device for providing electronic correction of auditory deficiencies for aurally handicapped persons

Also Published As

Publication number Publication date
ATA488976A (de) 1980-01-15
CA1061255A (en) 1979-08-28
NL7607515A (nl) 1977-01-11
CH607449A5 (show.php) 1978-12-15
DE2628626A1 (de) 1977-01-27
JPS5210014A (en) 1977-01-26
GB1553277A (en) 1979-09-26
US4025723A (en) 1977-05-24

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