CH439399A - Acoustic device for the deaf, with automatic amplification adjustment - Google Patents

Acoustic device for the deaf, with automatic amplification adjustment

Info

Publication number
CH439399A
CH439399A CH841166A CH841166A CH439399A CH 439399 A CH439399 A CH 439399A CH 841166 A CH841166 A CH 841166A CH 841166 A CH841166 A CH 841166A CH 439399 A CH439399 A CH 439399A
Authority
CH
Switzerland
Prior art keywords
deaf
acoustic device
amplification adjustment
automatic amplification
automatic
Prior art date
Application number
CH841166A
Other languages
French (fr)
Inventor
Guy Dr Perdoncini
Erich Dr Jucker
Lehmann Andre
Original Assignee
Portescap Le Porte
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 Portescap Le Porte filed Critical Portescap Le Porte
Priority to CH841166A priority Critical patent/CH439399A/en
Priority to DE19671512743 priority patent/DE1512743A1/en
Priority to FR13021844A priority patent/FR1522158A/en
Priority to NL6706460A priority patent/NL6706460A/xx
Priority to GB2182867A priority patent/GB1164380A/en
Publication of CH439399A publication Critical patent/CH439399A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • 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
CH841166A 1966-06-09 1966-06-09 Acoustic device for the deaf, with automatic amplification adjustment CH439399A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH841166A CH439399A (en) 1966-06-09 1966-06-09 Acoustic device for the deaf, with automatic amplification adjustment
DE19671512743 DE1512743A1 (en) 1966-06-09 1967-04-17 Acoustic device with automatic gain control
FR13021844A FR1522158A (en) 1966-06-09 1967-05-03 Acoustic device with automatic amplification adjustment
NL6706460A NL6706460A (en) 1966-06-09 1967-05-09
GB2182867A GB1164380A (en) 1966-06-09 1967-05-11 Improvements relating to Hearing Aids for the Hard-of-Hearing.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH841166A CH439399A (en) 1966-06-09 1966-06-09 Acoustic device for the deaf, with automatic amplification adjustment

Publications (1)

Publication Number Publication Date
CH439399A true CH439399A (en) 1967-07-15

Family

ID=4339906

Family Applications (1)

Application Number Title Priority Date Filing Date
CH841166A CH439399A (en) 1966-06-09 1966-06-09 Acoustic device for the deaf, with automatic amplification adjustment

Country Status (5)

Country Link
CH (1) CH439399A (en)
DE (1) DE1512743A1 (en)
FR (1) FR1522158A (en)
GB (1) GB1164380A (en)
NL (1) NL6706460A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995224A (en) * 1975-04-30 1976-11-30 Rca Corporation Fast automatic gain control circuit with adjustable range
FR2522451B1 (en) * 1982-03-01 1988-10-14 Audibel IMPROVEMENT IN THE AUTOMATIC GAIN CONTROL CIRCUIT OF A TRANSISTOR AMPLIFICATION SYSTEM AND HEARING CORRECTION APPARATUS PROVIDED WITH SUCH A CIRCUIT

Also Published As

Publication number Publication date
DE1512743A1 (en) 1969-08-07
FR1522158A (en) 1968-04-19
NL6706460A (en) 1967-12-11
GB1164380A (en) 1969-09-17

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