CA2190787A1 - A gain compression amplifier providing a linear compression function - Google Patents

A gain compression amplifier providing a linear compression function

Info

Publication number
CA2190787A1
CA2190787A1 CA2190787A CA2190787A CA2190787A1 CA 2190787 A1 CA2190787 A1 CA 2190787A1 CA 2190787 A CA2190787 A CA 2190787A CA 2190787 A CA2190787 A CA 2190787A CA 2190787 A1 CA2190787 A1 CA 2190787A1
Authority
CA
Canada
Prior art keywords
amplifier
gain
output
gain control
compression
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
CA2190787A
Other languages
French (fr)
Other versions
CA2190787C (en
Inventor
Jeremy A. Agnew
Jerry R. Wahl
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.)
Starkey Laboratories Inc
Original Assignee
Starkey Laboratories 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 Starkey Laboratories Inc filed Critical Starkey Laboratories Inc
Priority to CA002190787A priority Critical patent/CA2190787C/en
Priority to EP96650053A priority patent/EP0844805A1/en
Priority to AU74031/96A priority patent/AU7403196A/en
Priority to JP8351602A priority patent/JPH10200352A/en
Publication of CA2190787A1 publication Critical patent/CA2190787A1/en
Application granted granted Critical
Publication of CA2190787C publication Critical patent/CA2190787C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • 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
    • H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing

Abstract

An amplifier uses gain compression techniques to provide linear gain control over a wide dynamic range, and includes an amplifier having input and output legs, a gain controller coupled between the input and output legs of the amplifier, a gain control circuit having an input coupled to the amplifier output leg and output coupled to the gain controller. The gain controller is responsive to a gain control signal to permit continuous gain adjustment of the amplifier. The gain control circuit is configured to compare an output voltage on the amplifier output leg with a predetermined threshold voltage and to generate a gain control signal on the gain control circuit output so as to provide continuous gain adjustment of the amplifier at least when the amplifier output voltage is greater than the threshold voltage. A hearing aid using a single compression amplifier or multiple compression amplifiers to minimize sound distortion and enhance user comfort is also provided.
CA002190787A 1996-11-20 1996-11-20 A gain compression amplifier providing a linear compression function Expired - Fee Related CA2190787C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002190787A CA2190787C (en) 1996-11-20 1996-11-20 A gain compression amplifier providing a linear compression function
EP96650053A EP0844805A1 (en) 1996-11-20 1996-11-25 A compression amplifier
AU74031/96A AU7403196A (en) 1996-11-20 1996-11-27 A gain compression amplifier providing a linear compression function
JP8351602A JPH10200352A (en) 1996-11-20 1996-12-27 Gain compression amplifier and hearing aid

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002190787A CA2190787C (en) 1996-11-20 1996-11-20 A gain compression amplifier providing a linear compression function
EP96650053A EP0844805A1 (en) 1996-11-20 1996-11-25 A compression amplifier
AU74031/96A AU7403196A (en) 1996-11-20 1996-11-27 A gain compression amplifier providing a linear compression function
JP8351602A JPH10200352A (en) 1996-11-20 1996-12-27 Gain compression amplifier and hearing aid

Publications (2)

Publication Number Publication Date
CA2190787A1 true CA2190787A1 (en) 1998-05-20
CA2190787C CA2190787C (en) 2000-02-01

Family

ID=27423807

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002190787A Expired - Fee Related CA2190787C (en) 1996-11-20 1996-11-20 A gain compression amplifier providing a linear compression function

Country Status (4)

Country Link
EP (1) EP0844805A1 (en)
JP (1) JPH10200352A (en)
AU (1) AU7403196A (en)
CA (1) CA2190787C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6549755B2 (en) * 2001-05-04 2003-04-15 Glowlink Communications Technology, Inc. Method and apparatus for monitoring and controlling gain compression in a transmitted signal
WO2003077488A1 (en) 2002-03-04 2003-09-18 Glowlink Communications Technology, Inc. Detecting and measuring interference contained within a digital carrier
WO2004034593A2 (en) 2002-10-11 2004-04-22 Glowink Communications Technology Uplink power control using loopback communications carriers
JP2006162463A (en) * 2004-12-08 2006-06-22 Takenaka Engineering Co Ltd Human body detector
JP2008048067A (en) 2006-08-11 2008-02-28 Matsushita Electric Works Ltd Hearing aid
DE102006046403A1 (en) * 2006-09-29 2008-04-03 Robert Bosch Gmbh Circuit arrangement for micromechanical sensor element, has circuit arrangement comprising circuit units which generate control signal which is decoupled from utility signal of capacitor arrangement
US20130311174A1 (en) * 2010-12-20 2013-11-21 Nikon Corporation Audio control device and imaging device
US20120262233A1 (en) * 2011-04-15 2012-10-18 Fairchild Semiconductor Corporation Mixed signal dynamic range compression
US9301068B2 (en) 2011-10-19 2016-03-29 Cochlear Limited Acoustic prescription rule based on an in situ measured dynamic range

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1183580A (en) * 1982-02-19 1985-03-05 Linear Technology Inc. Peak amplitude detector
US5128566A (en) * 1989-11-03 1992-07-07 Etymotic Research, Inc. Variable attenuator circuit

Also Published As

Publication number Publication date
JPH10200352A (en) 1998-07-31
AU7403196A (en) 1998-06-04
CA2190787C (en) 2000-02-01
EP0844805A1 (en) 1998-05-27

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