JPS6439193A - Microphone device - Google Patents
Microphone deviceInfo
- Publication number
- JPS6439193A JPS6439193A JP19471287A JP19471287A JPS6439193A JP S6439193 A JPS6439193 A JP S6439193A JP 19471287 A JP19471287 A JP 19471287A JP 19471287 A JP19471287 A JP 19471287A JP S6439193 A JPS6439193 A JP S6439193A
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- output signal
- signal
- wind noise
- output
- 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
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
PURPOSE:To reduce wind noise at time of strong wind and to improve the quality of sound recording by providing an attenuator to switch the output signal of a unidirectional microphone and a non-oriented microphone with a control signal obtained at a deciding part. CONSTITUTION:The output signal of a single directional microphone 1 is converted into a direct current signal through an amplifier 2 and a level detecting part 3. The output signal of an non-oriented microphone 4 is also converted into the direct current signal through an amplifier 5 and a level detecting part 6. These two signals are compared at a deciding part 7 and it is judged whether the wind noise or a voice signal is obtained. In case of the wind noise, an attenuator 8 makes an one side output signal to branch the output signal of the microphone 1 into a low gain and makes an one side output signal to branch the output signal of the microphone 4 into a high gain by a control signal outputted from the part 7 and switches it. Thus, the outputs of the microphone 1 and 4 are automatically and successively switched, the output of the microphone 4 is outputted from an output terminal 9 at time of the wind noise is reduced and operability can be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471287A JPS6439193A (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19471287A JPS6439193A (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439193A true JPS6439193A (en) | 1989-02-09 |
Family
ID=16328996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19471287A Pending JPS6439193A (en) | 1987-08-04 | 1987-08-04 | Microphone device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439193A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04175073A (en) * | 1990-07-26 | 1992-06-23 | Mitsubishi Electric Corp | Integrated type video camera |
US8155345B2 (en) | 2006-02-27 | 2012-04-10 | Panasonic Corporation | Wearable terminal, mobile imaging sound collecting device, and device, method, and program for implementing them |
-
1987
- 1987-08-04 JP JP19471287A patent/JPS6439193A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04175073A (en) * | 1990-07-26 | 1992-06-23 | Mitsubishi Electric Corp | Integrated type video camera |
US5548335A (en) * | 1990-07-26 | 1996-08-20 | Mitsubishi Denki Kabushiki Kaisha | Dual directional microphone video camera having operator voice cancellation and control |
US8155345B2 (en) | 2006-02-27 | 2012-04-10 | Panasonic Corporation | Wearable terminal, mobile imaging sound collecting device, and device, method, and program for implementing them |
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