JPS57129092A - Multi-amplifier - Google Patents

Multi-amplifier

Info

Publication number
JPS57129092A
JPS57129092A JP56015412A JP1541281A JPS57129092A JP S57129092 A JPS57129092 A JP S57129092A JP 56015412 A JP56015412 A JP 56015412A JP 1541281 A JP1541281 A JP 1541281A JP S57129092 A JPS57129092 A JP S57129092A
Authority
JP
Japan
Prior art keywords
amplifier
loudspeaker
signal
lpf18
full band
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
JP56015412A
Other languages
Japanese (ja)
Inventor
Koichi Hara
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 JP56015412A priority Critical patent/JPS57129092A/en
Publication of JPS57129092A publication Critical patent/JPS57129092A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To raise a tone quality, by sounding through a loud-speaker both a signal from an audio frequency full band amplifier and a signal from a narrow band amplifier. CONSTITUTION:In case of a state that plugs are not inserted into jacks 13, 23, a signal amplified by a pre-amplifier 11 and an audio frequency full band amplifier 12 is applied to the first loudspeaker 16a, and also is applied to the second loudspeaker 16b through a volume 17, an LPF18 and a power amplifier 19. An output of the loudspeaker 16a becomes a frequency characteristic extending over the full band, and an input limited by the LPF18 is provided to the loudspeaker 16b, therefore, its output becomes a frequency characteristic of the narrow band.
JP56015412A 1981-02-03 1981-02-03 Multi-amplifier Pending JPS57129092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56015412A JPS57129092A (en) 1981-02-03 1981-02-03 Multi-amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56015412A JPS57129092A (en) 1981-02-03 1981-02-03 Multi-amplifier

Publications (1)

Publication Number Publication Date
JPS57129092A true JPS57129092A (en) 1982-08-10

Family

ID=11888022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56015412A Pending JPS57129092A (en) 1981-02-03 1981-02-03 Multi-amplifier

Country Status (1)

Country Link
JP (1) JPS57129092A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839950U (en) * 1981-09-11 1983-03-16 熊谷　清子 Fence to prevent infants from falling

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839950U (en) * 1981-09-11 1983-03-16 熊谷　清子 Fence to prevent infants from falling

Similar Documents

Publication Publication Date Title
MY106871A (en) Noise reducing receiver device.
GB1504065A (en) Headphone
ES8202211A1 (en) MFB system with a by-pass network.
JPS51129217A (en) Headphone
ES2115992T3 (en) DEVICE TO SUPPRESS SNORING.
JPS5571400A (en) Monolithic power ic and acoustic unit
JPS5547797A (en) Audio equipment for vehicle
JPS5323254A (en) Amplifier equipment
JPS57129092A (en) Multi-amplifier
JPS6436275A (en) Sound signal processor
JPS57129093A (en) Multi-amplifier
JPS6441349A (en) Telephone system for automobile
JPS5298451A (en) Parametric amplifier
ES8204893A1 (en) Amplifier arrangement with very low distortion
JPS5220801A (en) Automatic voice frequency elimination and control system
JPS5527742A (en) Hearing aid
JPS5755700A (en) Frequency-compression hearing aid
JPS5353203A (en) Amplifier
KR880001883Y1 (en) Megaphones
JPS51123546A (en) Power amplifier
JPS5664508A (en) Low-band compensating circuit
JPS57186843A (en) Tone squelch voice monitoring system
ATE112126T1 (en) ELECTRODYNAMIC SPEAKER.
GB1224784A (en) Headphone type amplifier, especially for sound amplification of electric musical instruments
JPS5733890A (en) Acoustic device