JPH0355069Y2 - - Google Patents
Info
- Publication number
- JPH0355069Y2 JPH0355069Y2 JP8910387U JP8910387U JPH0355069Y2 JP H0355069 Y2 JPH0355069 Y2 JP H0355069Y2 JP 8910387 U JP8910387 U JP 8910387U JP 8910387 U JP8910387 U JP 8910387U JP H0355069 Y2 JPH0355069 Y2 JP H0355069Y2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- base plate
- microphone
- sound receiving
- flat base
- 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.)
- Expired
Links
- 238000005259 measurement Methods 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 10
- 239000011491 glass wool Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- 239000013598 vector Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8910387U JPH0355069Y2 (enrdf_load_html_response) | 1987-06-11 | 1987-06-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8910387U JPH0355069Y2 (enrdf_load_html_response) | 1987-06-11 | 1987-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63199032U JPS63199032U (enrdf_load_html_response) | 1988-12-21 |
| JPH0355069Y2 true JPH0355069Y2 (enrdf_load_html_response) | 1991-12-06 |
Family
ID=30947784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8910387U Expired JPH0355069Y2 (enrdf_load_html_response) | 1987-06-11 | 1987-06-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0355069Y2 (enrdf_load_html_response) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101985410B1 (ko) * | 2018-11-01 | 2019-06-03 | (주)나노빅엔지니어링 | 항공소음 측정용 반사음 및 배경소음 감쇠장치 |
-
1987
- 1987-06-11 JP JP8910387U patent/JPH0355069Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63199032U (enrdf_load_html_response) | 1988-12-21 |
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