JPH0246500U - - Google Patents
Info
- Publication number
- JPH0246500U JPH0246500U JP12595288U JP12595288U JPH0246500U JP H0246500 U JPH0246500 U JP H0246500U JP 12595288 U JP12595288 U JP 12595288U JP 12595288 U JP12595288 U JP 12595288U JP H0246500 U JPH0246500 U JP H0246500U
- Authority
- JP
- Japan
- Prior art keywords
- noise
- aircraft noise
- microphones
- aircraft
- pair
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図及び第２図は本考案によるマイクロホン
装置の一実施例を示す側面図及び平面図、第３図
はその遮蔽体の詳細構成を示す拡大縦断面図、第
４図は第１図の航空機騒音判別回路３１の詳細構
成を示すブロツク図、第５図は第４図の差分検出
回路の差分演算動作の説明に供する信号波形図、
第６図は実験結果として第４図のモニタ３７上の
信号波形画像を示す略線図、第７図は上側及び下
側マイクロホンに到来する航空機騒音成分の説明
に供する略線図、第８図は従来の場合のモニタ画
面上の信号波形画像を示す略線図、第９図及び第
１０図は本考案の他の実施例を示す断面図、第１
１図は従来のマイクロホン装置を示す略線的側面
図、第１２図は第１１図のマイクロホン装置に到
来する航空機騒音の説明に供する略線図である。
１１…マイクロホン装置、１３…主柱、１５…
上側マイクロホン、１６，２５…防風スクリーン
、２２…下側マイクロホン、２４…遮蔽体、３１
…航空機騒音判別回路、３７…モニタ。
1 and 2 are a side view and a plan view showing one embodiment of the microphone device according to the present invention, FIG. 3 is an enlarged vertical cross-sectional view showing the detailed structure of the shielding body, and FIG. 4 is the same as that shown in FIG. 1. A block diagram showing the detailed configuration of the aircraft noise discriminating circuit 31; FIG. 5 is a signal waveform diagram for explaining the difference calculation operation of the difference detection circuit in FIG. 4;
FIG. 6 is a schematic diagram showing the signal waveform image on the monitor 37 in FIG. 4 as an experimental result, FIG. 7 is a schematic diagram for explaining the aircraft noise components arriving at the upper and lower microphones, and FIG. 9 and 10 are cross-sectional views showing other embodiments of the present invention.
FIG. 1 is a schematic side view showing a conventional microphone device, and FIG. 12 is a schematic diagram for explaining aircraft noise arriving at the microphone device of FIG. 11. 11...Microphone device, 13...Main pillar, 15...
Upper microphone, 16, 25... Windproof screen, 22... Lower microphone, 24... Shielding body, 31
...Aircraft noise discrimination circuit, 37...Monitor.
Claims (1)
に基づいて受音した騒音から航空機騒音を識別す
る航空機騒音識別装置において、 上記一対のマイクロホンの一方又は両方に反射
航空機騒音を遮音する遮蔽体を設けた ことを特徴とするマイクロホン装置。[Scope of Claim for Utility Model Registration] In an aircraft noise identification device that identifies aircraft noise from received noise based on noise detection signals obtained from a pair of microphones, one or both of the pair of microphones is provided with reflected aircraft noise. What is claimed is: 1. A microphone device characterized by being provided with a shielding body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125952U JP2505964Y2 (en) | 1988-09-27 | 1988-09-27 | Aircraft noise identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125952U JP2505964Y2 (en) | 1988-09-27 | 1988-09-27 | Aircraft noise identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0246500U true JPH0246500U (en) | 1990-03-29 |
| JP2505964Y2 JP2505964Y2 (en) | 1996-08-07 |
Family
ID=31377017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988125952U Expired - Lifetime JP2505964Y2 (en) | 1988-09-27 | 1988-09-27 | Aircraft noise identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505964Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2722968C1 (en) * | 2019-08-22 | 2020-06-05 | Акционерное общество "Всероссийский научно-исследовательский институт "Градиент" | Acoustic active aerial objects detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816993U (en) * | 1981-07-23 | 1983-02-02 | 日本ビクター株式会社 | Narrow angle directional microphone device |
| JPS595799A (en) * | 1982-07-01 | 1984-01-12 | Oki Electric Ind Co Ltd | Vibration-resistant microphone |
| JPS61128895U (en) * | 1985-01-30 | 1986-08-12 |
-
1988
- 1988-09-27 JP JP1988125952U patent/JP2505964Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816993U (en) * | 1981-07-23 | 1983-02-02 | 日本ビクター株式会社 | Narrow angle directional microphone device |
| JPS595799A (en) * | 1982-07-01 | 1984-01-12 | Oki Electric Ind Co Ltd | Vibration-resistant microphone |
| JPS61128895U (en) * | 1985-01-30 | 1986-08-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2505964Y2 (en) | 1996-08-07 |