JPS6439195A - Microphone device - Google Patents
Microphone deviceInfo
- Publication number
- JPS6439195A JPS6439195A JP19471487A JP19471487A JPS6439195A JP S6439195 A JPS6439195 A JP S6439195A JP 19471487 A JP19471487 A JP 19471487A JP 19471487 A JP19471487 A JP 19471487A JP S6439195 A JPS6439195 A JP S6439195A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- microphone
- gain
- wind noise
- adder
- 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.)
- Granted
Links
Abstract
PURPOSE:To reduce wind noise, etc., to be generated when it is strongly windy and to improve a sound recording quality by providing an attenuator to set the signal of an unidirectional microphone to a low gain and a signal from an adder to a high gain. CONSTITUTION:A part of the output signal of a single directional microphone 1 is separated into a medium-high frequency band by an HPF 10, a part of the output signal of a non-oriented microphone 4 is separated into a low frequency band by a BPF 11, respectively inputted to an adder 12 and added. The other part of the output signal of microphones 1 and 4 is inputted to a deciding part 7 through level detecting parts 3 and 6, and a whether wind noise or a voice signal is obtained is decided. When the judgement of the part 7 obtains wind noise, an attenuator 8 makes the signal of the microphone 1 into a low gain, the signal from the adder 12 into a high gain, and switches automatically and successively the two signals being gain-set. Thus, the wind noise at time of strong wind, and mechanical noise, etc., generated from the environment of the microphone are reduced and the recording quality and operability are improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471487A JPH0787630B2 (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471487A JPH0787630B2 (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6439195A true JPS6439195A (en) | 1989-02-09 |
JPH0787630B2 JPH0787630B2 (en) | 1995-09-20 |
Family
ID=16329027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19471487A Expired - Fee Related JPH0787630B2 (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0787630B2 (en) |
-
1987
- 1987-08-04 JP JP19471487A patent/JPH0787630B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0787630B2 (en) | 1995-09-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |