JPS57150300A - Amplifier for hearing aid - Google Patents

Amplifier for hearing aid

Info

Publication number
JPS57150300A
JPS57150300A JP3615581A JP3615581A JPS57150300A JP S57150300 A JPS57150300 A JP S57150300A JP 3615581 A JP3615581 A JP 3615581A JP 3615581 A JP3615581 A JP 3615581A JP S57150300 A JPS57150300 A JP S57150300A
Authority
JP
Japan
Prior art keywords
amplifier
hearing aid
amplifying part
output
large sound
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.)
Pending
Application number
JP3615581A
Other languages
Japanese (ja)
Inventor
Yoshiro Kasahara
Shigeru Ishino
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP3615581A priority Critical patent/JPS57150300A/en
Publication of JPS57150300A publication Critical patent/JPS57150300A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/001—Volume compression or expansion in amplifiers without controlling loop

Abstract

PURPOSE:To compress a large sound instantaneously and to lessen a pain of a user, by adopting an instantaneous compressing device as a part of a hearing aid amplifier. CONSTITUTION:A signal e1 from a microphone 1 is inputted to a linear amplifying part 2 containing an attenuation equalizer. An output of the amplifier 2 is inputted to a linear amplifying part 4 containing the attenuation equalizer, through an instantaneous compressing device 3. An output of the amplifying part 4 is provided to a linear amplifying part 6 containing the attenuation equalizer, through a volume controller 5, and is provided to an electroacoustic transducer 7 as an output e0. According to such a constitution, when a large sound arrives, it is compressed, and it is prevented that a user of an hearing aid feels a pain due to a large sound.
JP3615581A 1981-03-12 1981-03-12 Amplifier for hearing aid Pending JPS57150300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3615581A JPS57150300A (en) 1981-03-12 1981-03-12 Amplifier for hearing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3615581A JPS57150300A (en) 1981-03-12 1981-03-12 Amplifier for hearing aid

Publications (1)

Publication Number Publication Date
JPS57150300A true JPS57150300A (en) 1982-09-17

Family

ID=12461880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3615581A Pending JPS57150300A (en) 1981-03-12 1981-03-12 Amplifier for hearing aid

Country Status (1)

Country Link
JP (1) JPS57150300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759071A (en) * 1986-08-14 1988-07-19 Richards Medical Company Automatic noise eliminator for hearing aids

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432497Y1 (en) * 1964-03-02 1968-02-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432497Y1 (en) * 1964-03-02 1968-02-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759071A (en) * 1986-08-14 1988-07-19 Richards Medical Company Automatic noise eliminator for hearing aids

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