JPH01132930U - - Google Patents
Info
- Publication number
- JPH01132930U JPH01132930U JP2615088U JP2615088U JPH01132930U JP H01132930 U JPH01132930 U JP H01132930U JP 2615088 U JP2615088 U JP 2615088U JP 2615088 U JP2615088 U JP 2615088U JP H01132930 U JPH01132930 U JP H01132930U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- electrical
- operating
- excessive noise
- section
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 230000005236 sound signal Effects 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2615088U JPH01132930U (OSRAM) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2615088U JPH01132930U (OSRAM) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132930U true JPH01132930U (OSRAM) | 1989-09-11 |
Family
ID=31247518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2615088U Pending JPH01132930U (OSRAM) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132930U (OSRAM) |
-
1988
- 1988-02-29 JP JP2615088U patent/JPH01132930U/ja active Pending
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