Systems and methods for representing acoustic signatures from a target scene

Patent metadata

Field	Value
Publication number	US-11762089-B2
Application number	US-201917262502-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Jul 24, 2018
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Acoustic imaging systems can include an acoustic sensing array, an electromagnetic imaging tool, a display, and an audio device. A processor can receive data from the acoustic sensor array and the electromagnetic imaging tool to generate a display image combining acoustic image data and electromagnetic image data. Systems can include an audio device that receives an audio output from the processor and outputs audio feedback signals to a user. The audio feedback signals can represent acoustic signals from an acoustic scene. Systems can provide a display image to a user including acoustic image data, and a user can select an acoustic signal for which to provide a corresponding audio output to an audio device. Audio outputs and display images can change dynamically in response to a change in pointing of the acoustic sensing array, such as by changing a stereo audio output.

First claim

The invention claimed is:

1. An acoustic analysis system, comprising:
an acoustic sensor array comprising a plurality of acoustic sensor elements that receive acoustic signals from a scene and output acoustic data based on the acoustic signals;
a processor in communication with the acoustic sensor array, the processor being configured to:
receive the acoustic data from the acoustic sensor array;
generate acoustic image data of the scene based on the acoustic data, the acoustic image data including a visual representation of one or more acoustic signals in the scene;
detect a plurality of acoustic signals in the scene;
generate a display image comprising the acoustic image data, wherein the display image includes an indicator positioned at a location of each of the plurality of acoustic signals to identify a location of each acoustic signal in the scene;
receive, via a user interface, an indication of a selected acoustic signal in the scene;
generate an audio output representative of only the selected acoustic signal; and
output the audio output.

2. The acoustic analysis system of claim 1 , further comprising an audio device, wherein the processor is configured to output the audio output to the audio device.

3. The acoustic analysis system of claim 2 , further comprising a housing supporting the acoustic sensor array and the audio device, wherein the audio device comprises one or more speakers supported by the housing, a receptacle for receiving a headphone connector, or a wireless communication link for communicating with a wireless speaker or wireless headphones.

4. The acoustic analysis system of claim 2 , wherein the audio device comprises a first audio device and a second audio device, and wherein the audio output comprises a stereo audio output having a first audio output to the first audio device and a second audio output to the second audio device such that the first audio device outputs a first audio feedback signal and the second audio device outputs a second audio feedback signal.

5. The acoustic analysis system of claim 4 , wherein the processor is further configured to:
determine a location of the selected acoustic signal in the scene; and
wherein the first audio output and the second audio output are generated based on the location of the selected acoustic signal in the scene.

6. The acoustic analysis system of claim 5 , wherein:
the display image includes a first area and a second area;
when the selected acoustic signal is present within the first area, a representation of the selected acoustic signal in the first audio output has a greater magnitude than a representation of the selected acoustic signal in the second audio output; and
when the acoustic signal is present within the second area, a representation of the selected acoustic signal in the second audio output has a greater magnitude than a representation of the selected acoustic signal in the first audio output.

7. The acoustic analysis system of claim 1 ,
wherein the display image includes a visual representation of each of the plurality of acoustic signals at respective locations in the display image; and
the processor is configured to receive the indication of the selected acoustic signal via the user interface by detecting a touchscreen input at a location in the display image corresponding to the selected acoustic signal.

8. The acoustic analysis system of claim 1 , wherein the processor is further configured to generate a plurality of audio outputs, each of the plurality of audio outputs corresponding to one of the plurality of acoustic signals.

9. The acoustic analysis system of claim 8 , wherein the processor is configured to output each of the plurality of audio outputs simultaneously as a combined audio output.

10. The acoustic analysis system of claim 8 , wherein the processor is configured to output each of the plurality of audio outputs in a sequence.

11. The acoustic analysis system of claim 10 , wherein the processor is configured to update the display image to indicate the location of the acoustic signal corresponding to the audio output being output.

12. The acoustic analysis system of claim 8 , wherein the processor is configured to output audio outputs for only those acoustic signals satisfying a predetermined condition.

13. The acoustic analysis system of claim 1 , wherein the processor is configured to determine one or more acoustic parameters associated with an acoustic signal in the scene, and wherein the audio output is generated with one or more acoustic parameters in common with the acoustic signal.

14. The acoustic analysis system of claim 1 , wherein the processor is further configured to generate audio output that is representative of acoustic signals located in a center portion of the display image.

15. The acoustic analysis system of claim 1 , further comprising an electromagnetic imaging tool configured to receive electromagnetic radiation from the scene and output electromagnetic image data representative of the electromagnetic radiation,
wherein the display image comprises a combination of the acoustic image data and electromagnetic image data received from the electromagnetic imaging tool.

16. An acoustic analysis system, comprising:
an acoustic sensor array comprising a plurality of acoustic sensor elements that receive acoustic signals from a scene and output acoustic data based on the acoustic signals;
an audio device configured to output an audio feedback signal; and
a processor in communication with the acoustic sensor array and the audio device, the processor being configured to:
receive the acoustic data from the acoustic sensor array;
generate acoustic image data of the scene based on the acoustic data, the acoustic image data including a visual representation of one or more acoustic signals in the scene;
generate a display image comprising the acoustic image data; and
provide an output representing an acoustic signal within the scene, the output representing the acoustic signal having a dynamically changing intensity as a pointing of the acoustic sensor array is adjusted relative to a location of the acoustic signal within the scene,

wherein the display image includes a visual indication of the acoustic signal, and the visual indication has a transparency that varies according to the dynamically changing intensity of the output; and
wherein the transparency of the visual indication of the acoustic signal varies according to the location of the acoustic signal within the scene, such that as the location of the acoustic signal moves away from a center of the scene, the transparency of the visual indication increases.

17. The acoustic analysis system of claim 16 , wherein:
the acoustic signal is a first acoustic signal and the output is further representative of a second acoustic signal within the scene;
the display image includes a first visual indication of the first acoustic signal and a second visual indication of the second acoustic signal, each of the first and second visual indications having a variable transparency in the display image; and
the transparency of the first visual indication and the transparency of the second visual indication respectively increase as the first visual indication and the second visual indication respectively move away from the center of the scene in the display image.

18. The acoustic analysis system of claim 16 , wherein the display image comprises a blend of the acoustic image data and electromagnetic image data representative of electromagnetic radiation from the scen

Assignees

• Fluke Corp

Inventors

• Stuart Michael D
• Koppelmans Henk
• Prabhakar Dileepa
• Tsukamaki Scott M
• Witt Darwin C

Classifications

• H04N23/80

  Camera processing pipelines; Components thereof · CPC title

• G01M3/022

  Test plugs for closing off the end of a pipe · CPC title

• H04N23/95

  Computational photography systems, e.g. light-field imaging systems · CPC title

• H04S7/40

  Visual indication of stereophonic sound image · CPC title

• H04S7/301

  Automatic calibration of stereophonic sound system, e.g. with test microphone · CPC title