JPS6427396A - Microphone equipment - Google Patents

Microphone equipment

Info

Publication number
JPS6427396A
JPS6427396A JP17021688A JP17021688A JPS6427396A JP S6427396 A JPS6427396 A JP S6427396A JP 17021688 A JP17021688 A JP 17021688A JP 17021688 A JP17021688 A JP 17021688A JP S6427396 A JPS6427396 A JP S6427396A
Authority
JP
Japan
Prior art keywords
signal
converter
high frequency
transducer
electric
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
JP17021688A
Inventor
Heitaro Nakajima
Kiyofumi Inanaga
Kazumasa Takahashi
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP17021688A priority Critical patent/JPS6427396A/en
Publication of JPS6427396A publication Critical patent/JPS6427396A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/04Structural association of microphone with electric circuitry therefor

Abstract

PURPOSE:To prevent mixing of noise by providing a vibration-electric transducer, an amplifier amplifying an output from an electric transducer, an A-D converter, a modulation means converting an output digital signal of the A-D converter into a modulated signal for the external transmission into a microphone case so as to prevent deterioration of high frequency components. CONSTITUTION:The inside of the microphone case 1 is provided with the vibration-electric transducer 2, the amplifier 3 amplifying the analog electric signal from the transducer 2, the A-D converter 4 converting the analog electric signal through the amplifier 3 into a digital electric signal and a high frequency modulation section 5 applying amplitude modulation or frequency modulation to a carrier with a higher frequency by using the digital electric signal from the A-D converter 4. Then a cable 6 is led to the outside of the microphone case 1 from the high frequency modulation section 5 and the digital electric signal subjected to high frequency modulation is sent through a wire as the microphone output. Thus, the possibility of signal deterioration, noise mixture, crosstalk and leakage of an acoustic signal externally is precluded in comparision with the analog signal transmission and the acoustic signal is sent with high definition and high fidelity.
JP17021688A 1988-07-08 1988-07-08 Microphone equipment Pending JPS6427396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17021688A JPS6427396A (en) 1988-07-08 1988-07-08 Microphone equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17021688A JPS6427396A (en) 1988-07-08 1988-07-08 Microphone equipment

Publications (1)

Publication Number Publication Date
JPS6427396A true JPS6427396A (en) 1989-01-30

Family

ID=15900821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17021688A Pending JPS6427396A (en) 1988-07-08 1988-07-08 Microphone equipment

Country Status (1)

Country Link
JP (1) JPS6427396A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1052880A2 (en) * 1998-10-07 2000-11-15 Knowles Electronics, LLC Digital hearing aid microphone
US7380178B2 (en) 1998-07-28 2008-05-27 Lg Electronics, Inc. Method and apparatus of recording data in the optical recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7380178B2 (en) 1998-07-28 2008-05-27 Lg Electronics, Inc. Method and apparatus of recording data in the optical recording medium
EP1052880A2 (en) * 1998-10-07 2000-11-15 Knowles Electronics, LLC Digital hearing aid microphone
EP1052880A3 (en) * 1998-10-07 2001-10-24 Knowles Electronics, LLC Digital hearing aid microphone

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