JPS554160A - Hearing aid - Google Patents

Hearing aid

Info

Publication number
JPS554160A
JPS554160A JP7718178A JP7718178A JPS554160A JP S554160 A JPS554160 A JP S554160A JP 7718178 A JP7718178 A JP 7718178A JP 7718178 A JP7718178 A JP 7718178A JP S554160 A JPS554160 A JP S554160A
Authority
JP
Japan
Prior art keywords
amplifier
output
signal
hearing aid
earphone
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
JP7718178A
Other languages
Japanese (ja)
Inventor
Kenji Aoki
Sadatsugu Miura
Hidetoshi Komatsu
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP7718178A priority Critical patent/JPS554160A/en
Publication of JPS554160A publication Critical patent/JPS554160A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

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)

Abstract

PURPOSE:To reduce power consumption and noises by cutting off an idling current flowing to an output amplifier when no signal or a fine signal flows. CONSTITUTION:The hearing aid composed principally of microphone 201, pre- amplifier 202, output amplifier 203, and a speaker or earphone 204 is provided with decision circuit 205 which compares the output of pre-amplifier 202 with a preset level, and current control circuit 206 which cuts off a current flowing to output amplifier 203, or speaker or earphone 204 by the signal of circuit 205 when the output of pre-amplifier 202 is lower. Therefore, any current does not flow to amplifier 203 at all when no signal flows or the signal level is very small.
JP7718178A 1978-06-26 1978-06-26 Hearing aid Pending JPS554160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7718178A JPS554160A (en) 1978-06-26 1978-06-26 Hearing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7718178A JPS554160A (en) 1978-06-26 1978-06-26 Hearing aid

Publications (1)

Publication Number Publication Date
JPS554160A true JPS554160A (en) 1980-01-12

Family

ID=13626628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7718178A Pending JPS554160A (en) 1978-06-26 1978-06-26 Hearing aid

Country Status (1)

Country Link
JP (1) JPS554160A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188493A (en) * 1985-02-15 1986-08-22 Nippon Mining Co Ltd Diesel fuel composition
JPS61234699A (en) * 1985-04-10 1986-10-18 Tokyo Tatsuno Co Ltd Hearing aid
JPS641400A (en) * 1987-03-31 1989-01-05 Guenter Marx Hearing aid
EP1349421A2 (en) * 2002-03-14 2003-10-01 Siemens Audiologische Technik GmbH Disconnection of signal processing devices of a hearing aid

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188493A (en) * 1985-02-15 1986-08-22 Nippon Mining Co Ltd Diesel fuel composition
JPH0329269B2 (en) * 1985-02-15 1991-04-23 Nippon Mining Co
JPS61234699A (en) * 1985-04-10 1986-10-18 Tokyo Tatsuno Co Ltd Hearing aid
JPH0575240B2 (en) * 1985-04-10 1993-10-20 Tatsuno Mechatronics Kk
JPS641400A (en) * 1987-03-31 1989-01-05 Guenter Marx Hearing aid
EP1349421A2 (en) * 2002-03-14 2003-10-01 Siemens Audiologische Technik GmbH Disconnection of signal processing devices of a hearing aid
EP1349421A3 (en) * 2002-03-14 2008-01-23 Siemens Audiologische Technik GmbH Disconnection of signal processing devices of a hearing aid

Similar Documents

Publication Publication Date Title
GB1428466A (en) Hearing aid
DK163165C (en) HEARING DEVICE WITH A REAR EASY STABLE HOUSE
KR890700966A (en) Radio receiver voice amplifier circuit
JPS554160A (en) Hearing aid
JPS52102656A (en) Direct coupled power amplifier circuit
GR3004982T3 (en)
GB1342799A (en) Method of and device for enhancing marine navigational sound signals in the presence of acoustic noise
JPS57186867A (en) Voice storing and reproducing system
JPS575412A (en) Controller for tone quality
JPS5541012A (en) Gain control circuit
JPS5541036A (en) Hearing-aid unit
SE8103166L (en) AUDIO DEVICE WITH TONE CONTROL REMOTE CIRCUIT
JPS6444613A (en) Sound volume adjusting circuit
JPS57115010A (en) Automatic sound volume adjuster
JPS53113521A (en) Automatic control unut for frequency characteristics
JPS5593311A (en) Loudness circuit unit
JPS6473950A (en) Telephone system
JPS61287309A (en) Speaker broadcast system
JPS573409A (en) Agc circuit
JPS5679599A (en) Loud speaker
JPS5755605A (en) Differential amplifier
JPS5426608A (en) Howling prevention unit
JPS5739606A (en) Amplifying circuit of pulse width modulation
JPS56132009A (en) Tone control device
Ogura et al. Studies on Application of Hearing Aids in Young Children