AT302432B - Hearing aid - Google Patents

Hearing aid

Info

Publication number
AT302432B
AT302432B AT295570A AT295570A AT302432B AT 302432 B AT302432 B AT 302432B AT 295570 A AT295570 A AT 295570A AT 295570 A AT295570 A AT 295570A AT 302432 B AT302432 B AT 302432B
Authority
AT
Austria
Prior art keywords
hearing aid
hearing
aid
Prior art date
Application number
AT295570A
Other languages
German (de)
Original Assignee
Siemens Ag
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
Priority claimed from DE19691927848 external-priority patent/DE1927848C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT302432B publication Critical patent/AT302432B/en

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
    • 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
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors

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)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
AT295570A 1969-05-31 1970-04-01 Hearing aid AT302432B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691927848 DE1927848C3 (en) 1969-05-31 Hearing aid

Publications (1)

Publication Number Publication Date
AT302432B true AT302432B (en) 1972-10-10

Family

ID=5735760

Family Applications (1)

Application Number Title Priority Date Filing Date
AT295570A AT302432B (en) 1969-05-31 1970-04-01 Hearing aid

Country Status (5)

Country Link
AT (1) AT302432B (en)
CH (1) CH505526A (en)
DK (1) DK124579B (en)
GB (1) GB1316631A (en)
NL (1) NL7005570A (en)

Also Published As

Publication number Publication date
NL7005570A (en) 1970-12-02
CH505526A (en) 1971-03-31
DK124579B (en) 1972-10-30
GB1316631A (en) 1973-05-09
DE1927848B2 (en) 1975-06-19
DE1927848A1 (en) 1970-12-03

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee