JPH0439078B2 - - Google Patents
Info
- Publication number
- JPH0439078B2 JPH0439078B2 JP22013683A JP22013683A JPH0439078B2 JP H0439078 B2 JPH0439078 B2 JP H0439078B2 JP 22013683 A JP22013683 A JP 22013683A JP 22013683 A JP22013683 A JP 22013683A JP H0439078 B2 JPH0439078 B2 JP H0439078B2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- light emitting
- emitting diode
- pressure level
- microphone
- 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
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- Indicating Measured Values (AREA)
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は、空間の音圧レベルを視覚的に把握す
ることを可能にする空間音場表示装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a spatial sound field display device that makes it possible to visually grasp the sound pressure level in a space.
（従来技術とその問題点）
従来、空間音場表示装置としては、例えば特開
昭52−107884号公報に記載されているように移動
台上の揺動腕の遊端に音波を受けて対応する電気
信号を発生する１個のマイクロフオンと、このマ
イクロフオンに並設して接続されてマイクロフオ
ンからの電気信号のレベルに応じて点滅して光を
発生する発光ダイオードとよりなる音−光変換装
置を設け、移動台を移動して揺動腕の遊端の音−
光変換装置を被測定空間音場の全体に掃引し、発
光ダイオードの点灯を写真撮影あるいはコンピユ
ータ画像処理するものが知られている。しかしな
がら、かかる従来装置は掃引操作またはデータの
分析処理に時間がかかり、空間音場を瞬時に視覚
的に把握することが不可能であるという欠点があ
つた。(Prior art and its problems) Conventionally, as a spatial sound field display device, as described in Japanese Patent Application Laid-Open No. 52-107884, a sound wave is received at the free end of a swinging arm on a movable table. A sound-light system consisting of a microphone that generates an electrical signal, and a light-emitting diode that is connected in parallel to the microphone and flashes to generate light depending on the level of the electrical signal from the microphone. A conversion device is installed to move the moving table to generate the sound of the free end of the swinging arm.
It is known to sweep a light conversion device over the entire sound field of a space to be measured, and to photograph or process the lighting of a light emitting diode using a computer. However, such conventional devices have the disadvantage that sweeping operations or data analysis processing takes time, making it impossible to visually grasp the spatial sound field instantly.
（発明の目的および構成）
本発明は、上述した欠点を除去し、空間の音場
を瞬時に視覚的に把握することができるようにし
た空間音場表示装置を提供することを目的とし、
かかる目的を達成するため、本発明による空間音
場表示装置は、多数の縦線および横線による支持
線または格子（以下、本明細書においては支持格
子と総称する）を空間音場に張設し、マイクロフ
オンと、これに並設された発光ダイオードと、マ
イクロフオンからの電気信号のレベルに応じて発
光ダイオードを点灯させるよう電気信号を増幅す
る増幅回路とをそれぞれ具える多数の音−光変換
装置を支持格子上に分散配置したことを特徴とす
る。(Objects and Structure of the Invention) An object of the present invention is to provide a spatial sound field display device that eliminates the above-mentioned drawbacks and makes it possible to visually grasp the spatial sound field instantly.
In order to achieve such an object, the spatial sound field display device according to the present invention includes a support line or a grid (hereinafter collectively referred to as a support grid in this specification) made up of a large number of vertical lines and horizontal lines stretched across the spatial sound field. , a number of sound-to-light converters each comprising a microphone, a light emitting diode arranged in parallel with the microphone, and an amplification circuit that amplifies the electrical signal so as to light up the light emitting diode according to the level of the electrical signal from the microphone. It is characterized in that the devices are distributed on a support grid.
（発明の好適実施例）
第１図に示す例では、音源１から音波２が伝播
する空間音場に、この音場に変化を生ぜしめない
程度の太さの針金３の縦線３ａおよび横線３ｂに
よる支持格子４を垂直面内に適当な手段により張
設し、縦線３ａおよび横線３ｂの各交点３ｃに音
−光変換装置９をそれぞれ取付け、かようにして
支持格子４上に適当な間隔で分散配置した多数の
音−光変換装置９のそれぞれにマイクロフオン５
と発光ダイオード６とを並設して設け、（第１図
には図示を省略）、第３図に示すように、マイク
ロフオン５をマイクロフオンアンプ７および音圧
レベルレンジ切換装置８を経て発光ダイオード６
に接続し、これにより音源１から放射された音を
マイクロフオン５で捉え、マイクロフオン５で既
知のように変換させて出力される電気信号をマイ
クロフオンアンプ７で増幅した後、音圧レベル切
換装置８により発光ダイオードの輝度調整を行な
い、その音圧レベルに応じた輝度で発光ダイオー
ド６を点灯するよう構成されている。(Preferred Embodiment of the Invention) In the example shown in FIG. 1, a vertical line 3a and a horizontal line of a wire 3 have a thickness that does not cause a change in the spatial sound field in which the sound wave 2 propagates from the sound source 1. 3b is stretched in a vertical plane by suitable means, and a sound-to-light conversion device 9 is attached to each intersection 3c of the vertical lines 3a and horizontal lines 3b. Microphones 5 are attached to each of a large number of sound-light conversion devices 9 distributed at intervals.
and a light emitting diode 6 (not shown in FIG. 1), and as shown in FIG. diode 6
The sound emitted from the sound source 1 is captured by the microphone 5, the microphone 5 converts it in a known manner, and the output electrical signal is amplified by the microphone amplifier 7, and then the sound pressure level is switched. The device 8 is configured to adjust the brightness of the light emitting diode and light the light emitting diode 6 at a brightness corresponding to the sound pressure level.
上述の構成になる空間音場表示装置は、作動に
際し、音源１から放射された音波２が支持格子４
の平面に沿つて伝播されることにより支持格子４
上に分散配設された発光ダイオード６が到来する
音圧レベルに比例した輝度で点灯する。したがつ
て、音源から伝播される音の音圧レベルの状態を
時々刻々に可視的に表示され、これにより空間音
場の状態を瞬時に視覚的に把握することができ
る。 When the spatial sound field display device configured as described above is activated, the sound waves 2 emitted from the sound source 1 are transmitted to the support grid 4.
support grid 4 by being propagated along the plane of
Light emitting diodes 6 distributed above are lit with a brightness proportional to the incoming sound pressure level. Therefore, the state of the sound pressure level of the sound propagated from the sound source is visually displayed moment by moment, and thereby the state of the spatial sound field can be visually grasped instantly.
第４図は、小型の機械１０から放射された音圧
分布を本発明による装置により可視表示した状態
を示し、６Ａは極端に明るく点灯した発光ダイオ
ードを示し、音圧レベルが76dB以上であること
を示し、６Ｂは明るく点灯した発光ダイオードを
示し、音圧レベルが74〜76dBであることを示し、
６Ｃは中程度の明るさに点灯した発光ダイオード
を示し、72〜74dBの音圧レベルに対応し、６Ｄ
はやや明るく点灯した発光ダイオードを示し、70
〜72dBの音圧レベルに対応し、６Ｅは暗く点灯
した発光ダイオードを示し68〜70dBの音圧レベ
ルに対応し、６Ｆは極端に暗い発光ダイオードを
示し、これは68dB以下の音圧レベルに対応する。 FIG. 4 shows the sound pressure distribution radiated from the small machine 10 visually displayed by the device according to the present invention, and 6A indicates an extremely brightly lit light emitting diode, and the sound pressure level is 76 dB or more. 6B indicates a brightly lit light emitting diode, indicating that the sound pressure level is 74-76dB,
6C indicates light emitting diode illuminated with medium brightness, corresponds to 72-74dB sound pressure level, 6D
indicates a slightly brightly lit light emitting diode, 70
Corresponds to a sound pressure level of ~72dB, 6E indicates a dimly lit light emitting diode, which corresponds to a sound pressure level of 68-70dB, 6F indicates an extremely dark light emitting diode, which corresponds to a sound pressure level below 68dB do.
（発明の効果）
本発明によれば、音源から放射される音圧レベ
ルの大小により空間音場に分散配置した発光ダイ
オードの輝度の明暗の程度がきまり、瞬間的な音
場の音圧分布状態をも実時間で可視化することが
でき、防音対策に有効に役立つデータを提供し得
るという効果が得られる。(Effects of the Invention) According to the present invention, the degree of brightness of the light emitting diodes distributed in the spatial sound field is determined depending on the magnitude of the sound pressure level radiated from the sound source, and the instantaneous sound pressure distribution state of the sound field is determined. can also be visualized in real time, which has the effect of providing data that is effectively useful for soundproofing measures.
第１図は本発明による装置の概略線図、第２図
は音−光変換装置の線図的側面図、第３図は第２
図に示す音−光変換装置のブロツク線図、第４図
は小型機械から放射された音場の音圧分布状態を
本発明装置により可視表示している状態を示す説
明図である。
１……音源、２……音波、３……針金、３ａ…
…縦線、３ｂ……横線、４……支持格子、５……
マイクロフオン、６……発光ダイオード、７……
マイクロフオンアンプ、８……音圧レベルレンジ
切換装置、９……音−光変換装置。
1 is a schematic diagram of the device according to the invention, FIG. 2 is a diagrammatic side view of the sound-to-light conversion device, and FIG.
FIG. 4 is a block diagram of the sound-to-light conversion device shown in the figure. FIG. 4 is an explanatory diagram showing a state in which the sound pressure distribution state of a sound field radiated from a small machine is visually displayed by the device of the present invention. 1...Sound source, 2...Sound wave, 3...Wire, 3a...
... Vertical line, 3b... Horizontal line, 4... Support grid, 5...
Microphone, 6... Light emitting diode, 7...
Microphone amplifier, 8...Sound pressure level range switching device, 9...Sound-light conversion device.
Claims (1)
音場に張設される支持格子上に多数の音−光変換
装置を分散配置したことを特徴とする空間音場表
示装置。1. A spatial sound field display device characterized in that a large number of sound-light conversion devices are distributed and arranged on a support grid formed by a large number of vertical lines and horizontal lines and stretched over a spatial sound field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22013683A JPS60112091A (en) | 1983-11-22 | 1983-11-22 | Spatial sound field display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22013683A JPS60112091A (en) | 1983-11-22 | 1983-11-22 | Spatial sound field display unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60112091A JPS60112091A (en) | 1985-06-18 |
| JPH0439078B2 true JPH0439078B2 (en) | 1992-06-26 |
Family
ID=16746461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22013683A Granted JPS60112091A (en) | 1983-11-22 | 1983-11-22 | Spatial sound field display unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60112091A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5195179B2 (en) * | 2008-09-02 | 2013-05-08 | ヤマハ株式会社 | Sound field visualization system and sound field visualization method |
| JP5494048B2 (en) * | 2010-03-15 | 2014-05-14 | ヤマハ株式会社 | Sound / light converter |
| JP5655498B2 (en) * | 2010-10-22 | 2015-01-21 | ヤマハ株式会社 | Sound field visualization system |
| JP5673403B2 (en) * | 2011-07-11 | 2015-02-18 | ヤマハ株式会社 | Sound field visualization system |
-
1983
- 1983-11-22 JP JP22013683A patent/JPS60112091A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60112091A (en) | 1985-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |