GB1419851A - Apparatus for use by an aurally handicapped person - Google Patents

Apparatus for use by an aurally handicapped person

Info

Publication number
GB1419851A
GB1419851A GB901973A GB901973A GB1419851A GB 1419851 A GB1419851 A GB 1419851A GB 901973 A GB901973 A GB 901973A GB 901973 A GB901973 A GB 901973A GB 1419851 A GB1419851 A GB 1419851A
Authority
GB
United Kingdom
Prior art keywords
amplifier
circuits
output
fed
filter
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.)
Expired
Application number
GB901973A
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.)
SHALAKO INT
Original Assignee
SHALAKO INT
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 SHALAKO INT filed Critical SHALAKO INT
Publication of GB1419851A publication Critical patent/GB1419851A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

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)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

1419851 Hearing aid amplifiers; transistor amplifying circuits SHALAKO INTERNATIONAL Inc 23 Feb 1973 [25 Feb 1972] 9019/73 Headings H4J and H3T Apparatus for measuring hearing deficiency and/or providing compensatory amplification for a person with hearing deficiency comprises an amplification system with a number of independently adjustable active filters providing independent control of the amplification over contiguous audio frequency bands, together with an automatic gain control which reduces the gain of the input stage when the output signal exceeds a predetermined level. In use the apparatus is set up on a continuous speech signal to optimize the clarity and comprehension of the speech perceived by the person with hearing deficiency, using a relatively large master apparatus with easily set controls for the gains of the frequency bands, after which the control settings are duplicated on a wearable hearing aid. Fig. 6 shows a preferred arrangement in which signals from a microphone are fed through a microphone amplifier 50 to a drive amplifier for the variable filter 54 which comprises a number of operational amplifier filter circuits connected in parallel'each fed by respective gain control circuits, Fig. 9 (not shown). The outputs of the filter circuits are combined, at 56, and fed to the output amplifier for the receiver 60. Gain control for the f.e.t. microphone amplifier 50 can be derived either from the input to the filter circuit or the output to the receiver 60 and is effected by variation of the supply voltage of the amplifier. Circuits of the various parts of the apparatus are described with respect to Figs. 8 to 11. Each variable filter circuit can be provided at its output with a respective amplitude compression circuit (20) Fig. 5 (not shown). The filter circuits may be band stop filters arranged in series.
GB901973A 1972-02-25 1973-02-23 Apparatus for use by an aurally handicapped person Expired GB1419851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22932272A 1972-02-25 1972-02-25

Publications (1)

Publication Number Publication Date
GB1419851A true GB1419851A (en) 1975-12-31

Family

ID=22860718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB901973A Expired GB1419851A (en) 1972-02-25 1973-02-23 Apparatus for use by an aurally handicapped person

Country Status (7)

Country Link
US (1) US3784750A (en)
JP (1) JPS4898698A (en)
CA (1) CA984460A (en)
CH (1) CH560038A5 (en)
DK (2) DK138149C (en)
FR (1) FR2173316B1 (en)
GB (1) GB1419851A (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250646B2 (en) * 1972-10-16 1977-12-26
US3995114A (en) * 1974-05-09 1976-11-30 Dahlberg Electronics, Inc. Ultra low current amplifier
US3989904A (en) * 1974-12-30 1976-11-02 John L. Holmes Method and apparatus for setting an aural prosthesis to provide specific auditory deficiency corrections
JPS5111304A (en) * 1975-06-12 1976-01-29 Dee Kuritaa Kaaru Hochonotamenohohoto sonosochi
US4025723A (en) * 1975-07-07 1977-05-24 Hearing Health Group, Inc. Real time amplitude control of electrical waves
DE2536078B2 (en) * 1975-08-13 1977-06-08 Robert Bosch Gmbh, 7000 Stuttgart HEAVY-DUTY DEVICE WITH A SOUND FREQUENCY AMPLIFIER
US4099035A (en) * 1976-07-20 1978-07-04 Paul Yanick Hearing aid with recruitment compensation
US4139730A (en) * 1977-08-10 1979-02-13 Barbara Franklin Method of testing human auditory responses
US4224468A (en) * 1978-10-05 1980-09-23 Calder Jr Howard B Masking level difference adaptor for audiometers
DE2843923C2 (en) * 1978-10-09 1985-09-12 Philips Patentverwaltung Gmbh, 2000 Hamburg Method and arrangement for adapting a hearing aid
DE2951856A1 (en) * 1979-12-21 1981-07-02 Siemens AG, 1000 Berlin und 8000 München ELECTROACOUSTIC MEASURING DEVICE
FR2497592A1 (en) * 1981-01-07 1982-07-09 Gougelot Louis Marie Tape recording system for training hard of hearing - plays text with short words where volume level of at least one frequency band is increased relative remainder of spectrum
DE3131193A1 (en) * 1981-08-06 1983-02-24 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR COMPENSATING HEALTH DAMAGE
US4484345A (en) * 1983-02-28 1984-11-20 Stearns William P Prosthetic device for optimizing speech understanding through adjustable frequency spectrum responses
FR2570239B1 (en) * 1984-09-07 1988-07-15 Centre Nat Rech Scient EARPHONE, TELEPHONE HANDSET AND HEADSET FOR CORRECTING INDIVIDUAL HEARING DEFICIENCIES
US4759070A (en) * 1986-05-27 1988-07-19 Voroba Technologies Associates Patient controlled master hearing aid
JP2935266B2 (en) * 1987-05-11 1999-08-16 ジャンポルスキー、アーサー Paradoxical hearing aids
US4882762A (en) * 1988-02-23 1989-11-21 Resound Corporation Multi-band programmable compression system
US4882761A (en) * 1988-02-23 1989-11-21 Resound Corporation Low voltage programmable compressor
US4941179A (en) * 1988-04-27 1990-07-10 Gn Davavox A/S Method for the regulation of a hearing aid, a hearing aid and the use thereof
US5278912A (en) * 1991-06-28 1994-01-11 Resound Corporation Multiband programmable compression system
US8085959B2 (en) * 1994-07-08 2011-12-27 Brigham Young University Hearing compensation system incorporating signal processing techniques
US6885752B1 (en) 1994-07-08 2005-04-26 Brigham Young University Hearing aid device incorporating signal processing techniques
US5500902A (en) * 1994-07-08 1996-03-19 Stockham, Jr.; Thomas G. Hearing aid device incorporating signal processing techniques
US7139404B2 (en) * 2001-08-10 2006-11-21 Hear-Wear Technologies, Llc BTE/CIC auditory device and modular connector system therefor
US7110562B1 (en) * 2001-08-10 2006-09-19 Hear-Wear Technologies, Llc BTE/CIC auditory device and modular connector system therefor
JP4181869B2 (en) * 2002-12-19 2008-11-19 裕 力丸 Diagnostic equipment
AU2003903576A0 (en) * 2003-07-11 2003-07-24 Cochlear Limited Audio path diagnostics
JP4035113B2 (en) * 2004-03-11 2008-01-16 リオン株式会社 Anti-blurring device
US8861760B2 (en) * 2011-10-07 2014-10-14 Starkey Laboratories, Inc. Audio processing compression system using level-dependent channels
EP2898705B1 (en) 2012-09-18 2017-08-23 Sonova AG Cic hearing device
WO2016130954A1 (en) * 2015-02-13 2016-08-18 Fideliquest Llc Digital audio supplementation
EP3311741B1 (en) * 2016-10-19 2019-10-16 Mimi Hearing Technologies GmbH Method for accurately estimating a pure tone threshold using an unreferenced audio-system
US10375489B2 (en) 2017-03-17 2019-08-06 Robert Newton Rountree, SR. Audio system with integral hearing test

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965720A (en) * 1931-05-14 1934-07-10 Communications Patents Inc Electrical distribution system
US2110817A (en) * 1936-04-16 1938-03-08 William D Penn Hearing aid apparatus and method
US2484052A (en) * 1946-08-03 1949-10-11 Sonotone Corp Amplifier hearing aid
US3229049A (en) * 1960-08-04 1966-01-11 Goldberg Hyman Hearing aid
US3247464A (en) * 1961-09-08 1966-04-19 Rca Corp Audio amplifier including volume compression means
FR1316557A (en) * 1961-12-18 1963-02-01 Method of determining hearing correction, optimum, and prosthetic devices established in accordance with this method
US3531595A (en) * 1966-10-31 1970-09-29 Michael S Demaree Method and apparatus for the testing and treatment of hearing deficiencies
US3571529A (en) * 1968-09-09 1971-03-16 Zenith Radio Corp Hearing aid with frequency-selective agc
US3624298A (en) * 1969-03-05 1971-11-30 Ltv Ling Altec Inc Sound-improving means and method

Also Published As

Publication number Publication date
US3784750A (en) 1974-01-08
CA984460A (en) 1976-02-24
JPS4898698A (en) 1973-12-14
FR2173316B1 (en) 1978-02-10
CH560038A5 (en) 1975-03-27
FR2173316A1 (en) 1973-10-05
DK138149B (en) 1978-07-17
DK138149C (en) 1978-12-18
DE2309026A1 (en) 1973-09-06
DE2309026B2 (en) 1976-08-19

Similar Documents

Publication Publication Date Title
GB1419851A (en) Apparatus for use by an aurally handicapped person
GB1057771A (en) Improvements in hearing aids
EP1175125A3 (en) Adaptive gain and filtering circuit for a sound reproduction system
GB2158676A (en) Differential hearing aid with programmable frequency response
GB1461145A (en) Multichannel control circuit wich dc operated control devices
GB1390988A (en) Method of making audio amplification apparatus for an aurally handicapped person
EP0052415A3 (en) Frequency characteristic adjusting apparatus
FR2303434A1 (en) Electronic speech therapy installation - has left and right speaker channels with amplifier and filter circuits
JPS5610793A (en) Headphone unit
JPS5527742A (en) Hearing aid
US3409738A (en) Volume controlled audio program broadcasting
JPS57159199A (en) Hearing aid device
JPS56162511A (en) Power amplifier
SU288859A1 (en) A way to develop hearing and speech in deaf people
JPS5426608A (en) Howling prevention unit
GB1307074A (en) Automatic volume control system for multichannel amplifier
GB1427238A (en) Method for providing electronic restoration of speech discrimination in aurally handicapped persons
GB1233578A (en)
SU1166795A1 (en) Apparatus for correcting the hearing
GB1158846A (en) Improvements in or relating to Hearing Aids
KR930007296Y1 (en) Channel ballance autocontrolling circuit
JPS57104400A (en) 4 channel stereo device
KR100360664B1 (en) System for sound input/output of helmet-mounted sight
JPS56110317A (en) Sound volume controller
JPS55141842A (en) Announcement unit for cabin

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee