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 monitorInfo
- 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
- Authority
- DE
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
- G01H3/10—Amplitude; Power
- G01H3/12—Amplitude; Power by electric means
- G01H3/125—Amplitude; Power by electric means for representing acoustic field distribution
Landscapes
- 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
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. 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. 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 ).
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 |
Family
ID=7882815
Family Applications (1)
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DE1998144870 Ceased 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 |
Country Status (1)
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DE (1) | DE19844870A1 (en) |
Cited By (8)
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 |
-
1998
- 1998-09-30 DE DE1998144870 patent/DE19844870A1/en not_active Ceased
Cited By (14)
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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Legal Events
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OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |