DE19844870A1 - Displaying sound field of object such as machine or motor vehicle involves generating combined acoustic-visual image and displaying on monitor - Google Patents

Displaying sound field of object such as machine or motor vehicle involves generating combined acoustic-visual image and displaying on monitor

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Publication number
DE19844870A1
DE19844870A1 DE1998144870 DE19844870A DE19844870A1 DE 19844870 A1 DE19844870 A1 DE 19844870A1 DE 1998144870 DE1998144870 DE 1998144870 DE 19844870 A DE19844870 A DE 19844870A DE 19844870 A1 DE19844870 A1 DE 19844870A1
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Germany
Prior art keywords
displaying
sound
image
visual image
sound field
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.)
Ceased
Application number
DE1998144870
Other languages
German (de)
Inventor
Bruno Stieper
Joachim Oeverdick
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1998144870 priority Critical patent/DE19844870A1/en
Publication of DE19844870A1 publication Critical patent/DE19844870A1/en
Ceased legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10Amplitude; Power
    • G01H3/12Amplitude; Power by electric means
    • G01H3/125Amplitude; Power by electric means for representing acoustic field distribution

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

Several microphones (1) are used to detect an acoustic field around an object. CCD camera (2) detects a visual image of the object. Sound/light mixed image of the object is generated using data processing system (3). Color values of acoustic field are assigned to gray scale values of corresponding locations on visual image. Microphones and camera may be fixed relative to each other on a stand.

Description

Die Erfindung betrifft ein Verfahren zum Darstellen des Schallfeldes eines Objekts auf einem Bildwiedergabegerät.The invention relates to a method for representing the Sound field of an object on a picture display device.

Die ständig wachsenden Anforderungen im Bereich der Redu­ zierung von Schallabstrahlungen, insbesondere im Maschinen- und Fahrzeugbau erfordert eine Lokalisierung der Schallquellen. Es sind Verfahren bekannt, die es er­ möglichen, ein Schallbild eines schallabstrahlenden Ob­ jekts zu erfassen, wobei eine Mehrzahl von Mikrofonen verwendet werden, die durch Rechenverfahren zu einem das Schallfeld wiedergebenden Bild zusammengesetzt werden. Um nun eine Zuordnung der einzelnen Punkte dieses Schallbil­ des zu dem Objekt zu ermöglichen, wird dabei dem Schall­ bild eine zuvor erstellte zeichnerische Wiedergabe des Objekts "unterlegt".The constantly growing demands in the area of Redu adornment of sound radiation, especially in Machine and vehicle construction requires localization the sound sources. Procedures are known that he  possible, a sound image of a sound radiating ob to capture the subject using a plurality of microphones can be used to calculate the Sound field reproducing image can be composed. Around now an assignment of the individual points of this Schallbil the sound becomes the object picture a previously created graphic representation of the Object "underlaid".

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, bei dem eine unmittelbare Zuordnung des Schallbildes zu dem optischen Bild des Objekts möglich ist.The invention has for its object a method to create, in which an immediate assignment of the Sound image to the optical image of the object possible is.

Erfindungsgemäß wird diese Aufgabe gelöst durch Aufnehmen eines Schallbildes des Objekts unter Verwendung einer Mehrzahl von Mikrophonen, Aufnehmen eines Lichtbildes des Objekts unter Verwendung einer CCD-Kamera und Erzeugen eines Schall/Licht-Mischbildes des Objekts unter Verwen­ dung einer Datenverarbeitungsanlage.According to the invention, this object is achieved by recording a sound image of the object using a Plurality of microphones, taking a photo of the Object using a CCD camera and generating a sound / light mixed image of the object using a data processing system.

Vorzugsweise wird das Mischbild unter Zuordnen der Farb­ werte des Schallbildes zu den den entsprechenden Orten zugehörigen Grauwerten des Lichtbildes erstellt.The mixed image is preferably associated with the color values of the sound image for the corresponding locations associated gray values of the photo.

Weiter bevorzugt ist die Verwendung eines die Mikrophone und die CCD-Kamera in einer festen räumlichen Beziehung zueinander haltenden Stativs.The use of a microphone is further preferred and the CCD camera in a fixed spatial relationship tripods holding each other.

Die Mehrzahl von Mikrophonen 1 erfassen den Schall, der von dem durch ein Objekt gebildeten Schallfeld ausgeht. Die elektrischen Signale der Mikrophone werden zu einer Datenverarbeitungsanlage 3 übertragen, in der das Schall­ bild des Objekts durch - bekannte, keinen Teil der Erfin­ dung bildenden - Rechenverfahren ermittelt wird. The plurality of microphones 1 record the sound emanating from the sound field formed by an object. The electrical signals of the microphones are transmitted to a data processing system 3 , in which the sound image of the object is determined by - known, not forming part of the invention - computing methods.

Eine CCD-Kamera 2 erfaßt das optische Bild des Objekts, wobei die Mehrzahl von Mikrophonen 1 und die CCD-Kamera 2 so ausgerichtet sind, daß sie dasselbe Objekt erfassen. Die Signale der CCD-Kamera werden zu der Datenverarbei­ tungsanlage 3 übertragen, in der ein Schall/Licht- Mischbild des Objekts erzeugt wird.A CCD camera 2 captures the optical image of the object, the plurality of microphones 1 and the CCD camera 2 being oriented to capture the same object. The signals from the CCD camera are transmitted to the data processing system 3 , in which a sound / light mixed image of the object is generated.

Das Erzeugen des Schall/Licht-Mischbildes erfolgt dabei, indem von den den einzelnen Bildpixeln entsprechenden Signalen der CCD-Kamera lediglich die Grauwerte berück­ sichtigt werden, die Farbwerte dagegen nicht. Die Farb­ werte werden vielmehr durch diejenigen des Schallbildes ersetzt, wobei bestimmten Farben - in bekannter Weise - bestimmte Schallintensitäten entsprechen.The sound / light mixed image is generated by the corresponding to the individual image pixels Signals from the CCD camera only take the gray values into account are viewed, but the color values are not. The color rather, values become those of the sound image replaced, with certain colors - in a known manner - correspond to certain sound intensities.

Das so erstellte Bild gibt also in den Grauwerten - also in seinen Hell/Dunkel-Werten - das Objekt, dessen Schall­ feld darzustellen ist, optisch wieder, während die ver­ wendeten Farben der von dem jeweiligen Ort ausgehenden Schallintensitäten entsprechen. Der Monitor gibt damit das von der Meßvorrichtung untersuchte Objekt deutlich erkennbar wieder, die von diesem ausgehenden Schallwellen sind den einzelnen Orten unmittelbar visuell zuzuordnen.The image created in this way gives the gray values - so in its light / dark values - the object, its sound field is to be displayed visually again, while the ver colors of the originating from the respective place Correspond to sound intensities. The monitor gives with it the object examined by the measuring device clearly recognizable again, the sound waves emanating from this must be visually assigned to the individual locations.

Claims (3)

1. Verfahren zum Darstellen des Schallfeldes eines Ob­ jekts auf einem Bildwiedergabegerät (4), gekennzeichnet durch
  • 1. Aufnehmen eines Schallbildes des Objekts unter Ver­ wendung einer Mehrzahl von Mikrophonen (1),
  • 2. Aufnehmen eines Lichtbildes des Objekts unter Ver­ wendung einer CCD-Kamera (2), und
  • 3. Erzeugen eines Schall/Licht-Mischbildes des Objekts unter Verwendung einer Datenverarbeitungsanlage (3).
1. A method for representing the sound field of an object on an image display device ( 4 ), characterized by
  • 1. recording a sound image of the object using a plurality of microphones ( 1 ),
  • 2. Taking a photograph of the object using a CCD camera ( 2 ), and
  • 3. Generation of a sound / light mixed image of the object using a data processing system ( 3 ).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Mischbild unter Zuordnen der Farbwerte des Schallbildes zu den den entsprechenden Orten zugehöri­ gen Grauwerten des Lichtbildes erstellt wird.2. The method according to claim 1, characterized in that that the mixed image by assigning the color values of the Sound image belonging to the corresponding places gray values of the photo is created. 3. Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch die Verwendung eines die Mikrophone (1) und die CCD-Kamera (2) in einer festen räumlichen Beziehung zu­ einander haltenden Stativs (5).3. The method according to claim 1 or 2, characterized by the use of a the microphones ( 1 ) and the CCD camera ( 2 ) in a fixed spatial relationship to each other holding tripod ( 5 ).
DE1998144870 1998-09-30 1998-09-30 Displaying sound field of object such as machine or motor vehicle involves generating combined acoustic-visual image and displaying on monitor Ceased DE19844870A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998144870 DE19844870A1 (en) 1998-09-30 1998-09-30 Displaying sound field of object such as machine or motor vehicle involves generating combined acoustic-visual image and displaying on monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998144870 DE19844870A1 (en) 1998-09-30 1998-09-30 Displaying sound field of object such as machine or motor vehicle involves generating combined acoustic-visual image and displaying on monitor

Publications (1)

Publication Number Publication Date
DE19844870A1 true DE19844870A1 (en) 2000-04-20

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057922A1 (en) * 2000-11-22 2002-05-29 Htw Dresden Measurement and visualization of sound wave pressure fields using laser Doppler interferometers and scanning arrangements so that a wide range of sound frequencies and intensities can be visualized
DE10304215A1 (en) * 2003-01-30 2004-08-19 Gesellschaft zur Förderung angewandter Informatik eV Method and device for imaging acoustic objects and a corresponding computer program product and a corresponding computer-readable storage medium
EP2755003A1 (en) * 2013-01-10 2014-07-16 Mitel Networks Corporation Virtual audio map
DE102016215522A1 (en) 2016-08-18 2018-02-22 Weber Maschinenbau Gmbh Breidenbach Food processing device with microphone array
EP3480625A1 (en) * 2017-11-02 2019-05-08 Fluke Corporation Focus and/or parallax adjustment in acoustic imaging using distance information
CN110621966A (en) * 2017-05-16 2019-12-27 昕诺飞控股有限公司 Noise flow monitoring and sound localization via smart lighting
US11209306B2 (en) 2017-11-02 2021-12-28 Fluke Corporation Portable acoustic imaging tool with scanning and analysis capability
US11762089B2 (en) 2018-07-24 2023-09-19 Fluke Corporation Systems and methods for representing acoustic signatures from a target scene

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057922C2 (en) * 2000-11-22 2002-11-07 Htw Dresden Arrangement for measuring and visual representation of sound pressure fields
DE10057922A1 (en) * 2000-11-22 2002-05-29 Htw Dresden Measurement and visualization of sound wave pressure fields using laser Doppler interferometers and scanning arrangements so that a wide range of sound frequencies and intensities can be visualized
DE10304215A1 (en) * 2003-01-30 2004-08-19 Gesellschaft zur Förderung angewandter Informatik eV Method and device for imaging acoustic objects and a corresponding computer program product and a corresponding computer-readable storage medium
CN1764828B (en) * 2003-01-30 2010-04-28 应用计算机科学促进协会 Method and device for imaged representation of acoustic objects
EP2755003A1 (en) * 2013-01-10 2014-07-16 Mitel Networks Corporation Virtual audio map
DE102016215522A1 (en) 2016-08-18 2018-02-22 Weber Maschinenbau Gmbh Breidenbach Food processing device with microphone array
CN110621966A (en) * 2017-05-16 2019-12-27 昕诺飞控股有限公司 Noise flow monitoring and sound localization via smart lighting
EP3480625A1 (en) * 2017-11-02 2019-05-08 Fluke Corporation Focus and/or parallax adjustment in acoustic imaging using distance information
US11099075B2 (en) 2017-11-02 2021-08-24 Fluke Corporation Focus and/or parallax adjustment in acoustic imaging using distance information
US11209306B2 (en) 2017-11-02 2021-12-28 Fluke Corporation Portable acoustic imaging tool with scanning and analysis capability
US11913829B2 (en) 2017-11-02 2024-02-27 Fluke Corporation Portable acoustic imaging tool with scanning and analysis capability
US11762089B2 (en) 2018-07-24 2023-09-19 Fluke Corporation Systems and methods for representing acoustic signatures from a target scene
US11960002B2 (en) 2018-07-24 2024-04-16 Fluke Corporation Systems and methods for analyzing and displaying acoustic data
US11965958B2 (en) 2018-07-24 2024-04-23 Fluke Corporation Systems and methods for detachable and attachable acoustic imaging sensors

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