JPH0444793U - - Google Patents
Info
- Publication number
- JPH0444793U JPH0444793U JP8713890U JP8713890U JPH0444793U JP H0444793 U JPH0444793 U JP H0444793U JP 8713890 U JP8713890 U JP 8713890U JP 8713890 U JP8713890 U JP 8713890U JP H0444793 U JPH0444793 U JP H0444793U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- level
- detection circuit
- housing
- unit
- 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 description 4
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Control Of Amplification And Gain Control (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8713890U JPH0444793U (bg) | 1990-08-21 | 1990-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8713890U JPH0444793U (bg) | 1990-08-21 | 1990-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0444793U true JPH0444793U (bg) | 1992-04-16 |
Family
ID=31819240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8713890U Pending JPH0444793U (bg) | 1990-08-21 | 1990-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444793U (bg) |
-
1990
- 1990-08-21 JP JP8713890U patent/JPH0444793U/ja active Pending