JPS6212822A - Device for visualizing sound field - Google Patents

Device for visualizing sound field

Info

Publication number
JPS6212822A
JPS6212822A JP14997385A JP14997385A JPS6212822A JP S6212822 A JPS6212822 A JP S6212822A JP 14997385 A JP14997385 A JP 14997385A JP 14997385 A JP14997385 A JP 14997385A JP S6212822 A JPS6212822 A JP S6212822A
Authority
JP
Japan
Prior art keywords
detector
sound
sound field
phase
reference signal
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
Application number
JP14997385A
Other languages
Japanese (ja)
Inventor
Kiyoshi Okura
大倉 清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14997385A priority Critical patent/JPS6212822A/en
Publication of JPS6212822A publication Critical patent/JPS6212822A/en
Pending legal-status Critical Current

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To visualize an optional sound field by using a detecting signal of a sound detector fixed in a sound field as a reference signal and detecting a phase difference with a detecting signal of a sound detector moving the sound field. CONSTITUTION:A prescribed frequency component is extracted from a sound detecting signal to be a reference signal for the phase and intensity of a sound field which is outputted from a fixed sound detector 1B through a filter 7B and inputted to a phase detector 3 as a reference signal. On the other hand, a prescribed frequency component is extracted from a detecting signal of a moving sound detector 1A through a filter 7A and inputted to the detector 3. The detector 3 detects the phase difference of the detecting signal outputted from the detector 1A through the filter 7A with the reference signal which is the detecting signal outputted from the detector 1B through the filter 7B and drives a light emitting element 4 on the basis of the detecting signal. Since the element 4 is driven so that its luminance is changed in accordance with the phase difference of the detecting signal from the detector 1A moving in the sound field with the reference signal outputted from the detector B fixed on the sound field, an optional sound field can be visualized independently of a sound generating source.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、空気中の音場のみならず、水中、固体中の
音場も可視できるようにした音場可視化装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sound field visualization device that can visualize not only sound fields in the air but also sound fields in water and solid bodies.

〔従来の技術〕[Conventional technology]

音場の可視化に関しては、水封、関口、飯田;1音波制
御装置に関する研究”、日本機械学会論文集(0編)、
VoJ49.4447.1982(1984−11)に
示されている。
Regarding the visualization of sound fields, see Mizuho, Sekiguchi, and Iida; 1. Research on sound wave control devices,” Proceedings of the Japan Society of Mechanical Engineers (0 editions),
VoJ49.4447.1982 (1984-11).

第2図は従来の音場可視化装置の構成を示すプロ、り図
である。この第2図において、マイクロホンなどの移動
用の音波検知器1の出力は   ゛増幅器2を経て位相
検知器3に送るようにして   □いる。
FIG. 2 is a schematic diagram showing the configuration of a conventional sound field visualization device. In FIG. 2, the output of a mobile sound wave detector 1 such as a microphone is sent to a phase detector 3 via an amplifier 2.

また、発振器6の出力はスピーカなどの音響変換器5お
よび位相検知器3に送出するようにしており、位相検知
器3はこの発振器6の出力と増幅器2の出力の二つの信
号の位相差を検出し、これに比例した出力を得るもので
ある。
Further, the output of the oscillator 6 is sent to an acoustic transducer 5 such as a speaker and a phase detector 3, and the phase detector 3 detects the phase difference between the two signals, the output of the oscillator 6 and the output of the amplifier 2. It detects this and obtains an output proportional to it.

この位相検知器3の出力で発光素子4を駆動するように
しておシ、発光素子4は音波検知器1に固定されている
The light emitting element 4 is driven by the output of the phase detector 3, and the light emitting element 4 is fixed to the sonic wave detector 1.

次に、動作について説明する。発振器6からでた信号の
一方は音響変換器5に入シ音波に変換される。また、発
振器6から出力されるもう一方の信号は基準信号として
位相検知器3に入る。
Next, the operation will be explained. One of the signals output from the oscillator 6 is converted into a sound wave by the acoustic transducer 5. The other signal output from the oscillator 6 enters the phase detector 3 as a reference signal.

音波検知器1を音場内で移動させるとき、音波検知器1
で検出され、増幅器2を通って位相検知器に入る信号と
基準信号との間には音波検知器1の位置に応じて位相の
ずれが生じる。
When moving the sound wave detector 1 within the sound field, the sound wave detector 1
Depending on the position of the acoustic wave detector 1, a phase shift occurs between the signal detected by the wave detector 1 and the reference signal that passes through the amplifier 2 and enters the phase detector.

この二つの信号の位相差を位相検知器で検出し、たとえ
ば、同位相のときは発光素子4が作動し、逆位相のとき
は作動しないようにすれば、音波の波長に相当した移動
距離に応じて発光素子4が点滅することになる。
If the phase difference between these two signals is detected by a phase detector, and the light emitting element 4 is activated when the signals are in the same phase, but not activated when the signals are in opposite phase, then the distance traveled corresponds to the wavelength of the sound wave. Accordingly, the light emitting element 4 will blink.

音波検知器1を移動し表から、発光素子4の点滅状態を
開放された写真機などで撮影すれば、音場内における音
波の波面(同位相面)が得られ、音場を可視化すること
ができる。
If the sound wave detector 1 is moved and the blinking state of the light emitting element 4 is photographed using an open camera, the wave front (in-phase front) of the sound wave in the sound field can be obtained, and the sound field can be visualized. can.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、上記従来の音場可視化装置では、基準信
号として発振器6の信号を用いているため、発振器6と
音響変換器5を用いて人工的に作られた音場、あるいは
音波の発生源が明確な音場以外には適用できないという
欠点があった。
However, since the conventional sound field visualization device described above uses the signal of the oscillator 6 as the reference signal, it is clear that the sound field artificially created using the oscillator 6 and the acoustic transducer 5 or the source of the sound wave is clearly identified. The drawback was that it could not be applied to anything other than a sound field.

この発明は、上記従来の不具合に鑑みてなされたもので
、音波の発生源と無関係に任意の音場を可視化すること
を目的とする音場可視化装置を提供することを目的とす
る。
The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a sound field visualization device that aims to visualize any sound field regardless of the source of sound waves.

〔問題点を解決するための手段〕[Means for solving problems]

この発明の音波の可視化装置は、音場に固定され音波を
検出して音場内の位相と強弱の基準信号を出力する固定
用の音波検知器と、音場内を移動して音波を検出する移
動用の音波検知器と、この移動用の音波検知器の検出信
号と基準信号との位相差を検出する位相検知器と、移動
用の音波検知器に固定され位相差検知器で検出された位
相差に応じて輝度が変化する発光、素子とを設けたもの
である。
The sound wave visualization device of the present invention includes a fixed sound wave detector that is fixed in a sound field to detect sound waves and outputs reference signals of the phase and intensity in the sound field, and a mobile device that moves within the sound field to detect sound waves. a phase detector that detects the phase difference between the detection signal of the mobile sonic detector and a reference signal, and a phase detector that detects the phase difference between the detection signal of the mobile sonic detector and the reference signal, and a phase detector that detects the phase difference between the detection signal of the mobile sonic detector and the reference signal. It is equipped with a light emitting element whose brightness changes depending on the phase difference.

〔作 用〕[For production]

この発明は、音場に固定した固定用の音波検知器の検出
信号を基準信号として音場内を移動する移動用の音波検
知器の音波の検出信号と位相差を位相検知器で検出し、
この位相差に応じて移動用の音波検知器に固定された発
光素子の輝度が変わるように駆動する。
This invention uses a detection signal of a fixed sound wave detector fixed in a sound field as a reference signal and detects a phase difference between the detection signal of a sound wave of a mobile sound wave detector moving in the sound field and a phase detector,
The luminance of the light emitting element fixed to the movable acoustic wave detector is driven to change according to this phase difference.

〔実施例〕〔Example〕

以下、この発明の音場の可視化装置の実施例について図
面に基づき説明する。第1図はその一実施例の構成を示
すプロ、り図である。この第1図において、第2図と同
一部分には同一符号を付して説明する。
Embodiments of the sound field visualization device of the present invention will be described below with reference to the drawings. FIG. 1 is a professional diagram showing the configuration of one embodiment. In FIG. 1, the same parts as in FIG. 2 are designated by the same reference numerals and will be explained.

第1図におけるIAは音場内を移動する移動用の音波検
知器、IBは固定用の音波検知器である。音波検知器I
Aの出力は増幅器2A、フィルタ7Aを通して位相検知
器3の一方の入力端に導入するようになっている。
IA in FIG. 1 is a mobile sonic detector that moves within a sound field, and IB is a fixed sonic detector. Sonic detector I
The output of A is introduced into one input terminal of the phase detector 3 through an amplifier 2A and a filter 7A.

同様にして、音場内に固定された音波検知器IBの出力
は増幅器2B、フィルタ7Bを通して位相検知器3の他
方の入力端に導入するようになっている。
Similarly, the output of the acoustic wave detector IB fixed in the sound field is introduced into the other input terminal of the phase detector 3 through the amplifier 2B and the filter 7B.

この位相検知器3は二つの入力信号の位相差を検知して
発光素子4を駆動するものである。
This phase detector 3 detects the phase difference between two input signals and drives the light emitting element 4.

発光素子4は音波検知器IAに固定されている。The light emitting element 4 is fixed to the acoustic wave detector IA.

次に、以上のように構成されたこの発明の音場の可視化
装置の動作について説明する。固定用の音波検知器IB
は音場内の位相と強弱の基準信号となる音波の検出信号
が増幅器2Bで増幅された後、フィルタ7Bで所定の周
波数成分を抽出して基準信号として位相検知器3に入力
される。
Next, the operation of the sound field visualization device of the present invention configured as described above will be explained. Fixed sound wave detector IB
After a sound wave detection signal serving as a reference signal for the phase and intensity in the sound field is amplified by an amplifier 2B, a predetermined frequency component is extracted by a filter 7B and inputted to the phase detector 3 as a reference signal.

一方、移動用の音波検知器IAの検出信号は増幅器2人
で増幅された後、フィルタ2人によシ所定の周波数成分
を抽出して位相検知器3に入力される。
On the other hand, the detection signal of the mobile sonic detector IA is amplified by two amplifiers, and then a predetermined frequency component is extracted by two filters and input to the phase detector 3.

この位相検知器3はフィルタ7Bから出力される音波検
知器IBの検出信号を基準信号として、フィルタ7Aか
ら出力される音波検知器IAの検出信号との位相差を検
出し、その検出信号によシ発晃素子4を駆動する。
This phase detector 3 uses the detection signal of the sonic detector IB outputted from the filter 7B as a reference signal, detects the phase difference between the detection signal of the sonic detector IA outputted from the filter 7A, and uses the detected signal. The oscillation element 4 is driven.

このように、音場内に固定された音波検知器IBの検出
信号を基準信号として、音場内を移動する移動用の音波
検知器の検出信号との位相差によ一シ発光素子4の輝度
が変わるように駆動しているから、音波の発生源とは無
関係に任意の音場を可視化できる。
In this way, the brightness of the light emitting element 4 is determined by the phase difference between the detection signal of the sonic detector IB fixed in the sound field as a reference signal and the detection signal of the mobile sonic detector moving in the sound field. Since it is driven to change, any sound field can be visualized regardless of the source of the sound wave.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明の音場の可視化装置によれば、
音場に固定した音波検知器の検出信号を基準信号として
音場を移動する移動用の音波検知器の検出信号との位相
差を位相検知器で検出して、移動用の音波検知器に固定
された発光素子を駆動するようにしたので、音波の発生
源に無関係に任意の音場を可視化できる。
As described above, according to the sound field visualization device of the present invention,
Using the detection signal of the sonic detector fixed in the sound field as a reference signal, the phase detector detects the phase difference between the detection signal of the mobile sonic detector that moves in the sound field and fixes it on the mobile sonic detector. Since the light emitting element is driven, any sound field can be visualized regardless of the source of the sound wave.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の音場の可視化装置の一実施例の構成
を示すプロ、り図、第2図は従来の音場の可視化装置の
構成を示すプロ、り図である。 IA・・・移動用の音波検知器、IB・・・固定用の音
波検知器、3・・・位相検知器、4・・・発光素子。 出願人復代理人  弁理士 鈴 江 武 彦第1図
FIG. 1 is a diagram showing the configuration of an embodiment of a sound field visualization device of the present invention, and FIG. 2 is a diagram showing the configuration of a conventional sound field visualization device. IA...Moving sound wave detector, IB...Fixed sound wave detector, 3...Phase detector, 4...Light emitting element. Applicant Sub-Agent Patent Attorney Takehiko Suzue Figure 1

Claims (1)

【特許請求の範囲】[Claims] 音場内に固定され音波を検出して音場内の位相と強弱の
基準信号を出力する固定用の音波検知器と、上記音場内
を移動して音波を検出する移動用の音波検知器と、この
移動用の音波検知器の検出信号と上記基準信号との位相
差を検出する位相検知器と、上記移動用の音波検知器に
固定され上記位相検知器で検出された位相差に応じて輝
度が変化する発光素子とを具備する音場の可視化装置。
A fixed sound wave detector is fixed in a sound field to detect sound waves and outputs a reference signal of the phase and strength of the sound field in the sound field, and a mobile sound wave detector is moved in the sound field to detect sound waves. a phase detector that detects a phase difference between the detection signal of the mobile sonic detector and the reference signal; and a phase detector that is fixed to the mobile sonic detector and whose brightness is adjusted according to the phase difference detected by the phase detector. A sound field visualization device comprising a changing light emitting element.
JP14997385A 1985-07-10 1985-07-10 Device for visualizing sound field Pending JPS6212822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14997385A JPS6212822A (en) 1985-07-10 1985-07-10 Device for visualizing sound field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14997385A JPS6212822A (en) 1985-07-10 1985-07-10 Device for visualizing sound field

Publications (1)

Publication Number Publication Date
JPS6212822A true JPS6212822A (en) 1987-01-21

Family

ID=15486671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14997385A Pending JPS6212822A (en) 1985-07-10 1985-07-10 Device for visualizing sound field

Country Status (1)

Country Link
JP (1) JPS6212822A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060676A (en) * 2008-09-02 2010-03-18 Yamaha Corp Sound field visualization system and sound field visualization method
JP2011191464A (en) * 2010-03-15 2011-09-29 Yamaha Corp Sound/light converter
JP2012118512A (en) * 2010-11-09 2012-06-21 Denso Corp Sound field visualization system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060676A (en) * 2008-09-02 2010-03-18 Yamaha Corp Sound field visualization system and sound field visualization method
JP2011191464A (en) * 2010-03-15 2011-09-29 Yamaha Corp Sound/light converter
JP2012118512A (en) * 2010-11-09 2012-06-21 Denso Corp Sound field visualization system

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