JPS6427396A - Microphone equipment - Google Patents
Microphone equipmentInfo
- 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
- frequency modulation
- 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
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/04—Structural 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.
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)
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 |
-
1988
- 1988-07-08 JP JP17021688A patent/JPS6427396A/en active Pending
Cited By (3)
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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