FR1522158A - Appareil acoustique à réglage automatique de l'amplification - Google Patents

Appareil acoustique à réglage automatique de l'amplification

Info

Publication number
FR1522158A
FR1522158A FR13021844A FR13021844A FR1522158A FR 1522158 A FR1522158 A FR 1522158A FR 13021844 A FR13021844 A FR 13021844A FR 13021844 A FR13021844 A FR 13021844A FR 1522158 A FR1522158 A FR 1522158A
Authority
FR
France
Prior art keywords
acoustic device
amplification adjustment
automatic amplification
automatic
adjustment
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
FR13021844A
Other languages
English (en)
Inventor
Guy Perdoncini
Erich Jucker
Andre Lehmann
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.)
Portescap SA
Original Assignee
Portescap SA
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 SA filed Critical Portescap SA
Application granted granted Critical
Publication of FR1522158A publication Critical patent/FR1522158A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • 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; 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
    • 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

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
FR13021844A 1966-06-09 1967-05-03 Appareil acoustique à réglage automatique de l'amplification Expired FR1522158A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH841166A CH439399A (fr) 1966-06-09 1966-06-09 Appareil acoustique pour sourd, à réglage automatique de l'amplification

Publications (1)

Publication Number Publication Date
FR1522158A true FR1522158A (fr) 1968-04-19

Family

ID=4339906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR13021844A Expired FR1522158A (fr) 1966-06-09 1967-05-03 Appareil acoustique à réglage automatique de l'amplification

Country Status (5)

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

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 (fr) * 1982-03-01 1988-10-14 Audibel Perfectionnement au circuit de controle automatique de gain d'un systeme d'amplification a transistors et appareil de correction auditive equipe d'un tel circuit

Also Published As

Publication number Publication date
DE1512743A1 (de) 1969-08-07
CH439399A (fr) 1967-07-15
GB1164380A (en) 1969-09-17
NL6706460A (fr) 1967-12-11

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