Systems and methods for remote multi-directional bark deterrence

Patent metadata

Field	Value
Publication number	US-11238889-B2
Application number	US-201916522593-A
Country	US
Kind code	B2
Filing date	Jul 25, 2019
Priority date	Jul 25, 2019
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

An apparatus is described that comprises a microphone array and a plurality of transducers. The microphone array and the plurality of transducers are communicatively coupled with at least one processor. The apparatus includes the microphone array for receiving at least one signal. Each transducer of the plurality of transducers is configured to deliver a correction signal along a transducer beam spread axis, wherein the plurality of transducers is positioned on the apparatus for providing a combined transducer beam spread coverage in the horizontal plane. One or more applications running on the at least one processor use information of the at least one signal to detect a sound event. The detecting the sound event includes selecting transducers from the plurality of transducers and instructing the selected transducers to deliver a correction signal.

First claim

What is claimed is:

1. An apparatus comprising,
a microphone array and a plurality of transducers, the microphone array and the plurality of transducers communicatively coupled with at least one processor, the at least one processor communicatively coupled with a memory;
the microphone array for receiving at least one signal;
each transducer of the plurality of transducers configured to deliver a correction signal along a transducer beam spread axis, wherein the plurality of transducers is positioned on the apparatus for providing a combined transducer beam spread coverage in the horizontal plane;
one or more applications running on the at least one processor for using information of the at least one signal to detect a sound event, the detecting the sound event including selecting one or more transducers from the plurality of transducers, the detecting the sound event including instructing the selected one or more transducers to deliver a correction signal, the detecting the sound event including determining a sound event bearing, wherein the sound event bearing comprises an angle from a reference line to a direction of the sound event, the selecting the one or more transducers from the plurality of transducers including comparing the sound event bearing with transducer bearings of the plurality of transducers, wherein a transducer bearing comprises an angle from a respective transducer beam spread axis to the reference line, wherein the memory comprises the transducer bearings.

2. The apparatus of claim 1 , the determining the sound event bearing comprising using time difference of arrival of the sound event at two or more microphones of the microphone array.

3. The apparatus of claim 1 , the determining the sound event bearing comprising cross correlating signals corresponding to the sound event received by at least two microphones of the microphone array.

4. The apparatus of claim 1 , the determining the sound event bearing comprising using a generalized cross correlation and phase amplitude transform applied to signals corresponding to the sound event received by at least two microphones of the microphone array.

5. The apparatus of claim 1 , the selecting the one or more transducers from the plurality of transducers including selecting the one or more transducers when an absolute difference between the sound event bearing and respective transducer bearing is below a threshold value.

6. The apparatus of claim 1 , wherein the combined transducer beam spread coverage spans ninety (90) degrees or less.

7. The apparatus of claim 1 , wherein the combined transducer beam spread coverage is greater than ninety (90) degrees.

8. The apparatus of claim 1 , the selecting the one or more transducers from the plurality of transducers including selecting one or more additional transducers.

9. The apparatus of claim 8 , wherein the one or more additional transducers comprise a respective beam spread axis adjacent a beam spread axis of the selected one or more transducers in the horizontal plane, wherein the selected one or more transducers comprise the one or more additional transducers.

10. The apparatus of claim 1 , wherein the sound event comprises barking of a dog.

11. The apparatus of claim 1 , wherein the plurality of transducers comprise an ultrasonic transducer, wherein the correction signal comprises an ultrasonic signal.

12. The apparatus of claim 11 , wherein the ultrasonic signal comprises a frequency range between 20 kHz and 50 kHz.

13. The apparatus of claim 11 , wherein the ultrasonic signal comprises a sound pressure level between 70 dBA and 130 dBA measured 0.3 meters from the face of the transducer.

14. The apparatus of claim 1 , wherein the reference line forms a fixed angle with a line connecting two microphones of the microphone array.

15. The apparatus of claim 1 , wherein the reference line comprises magnetic north.

16. A method comprising,
one or more applications running on at least one processor for providing,
receiving at least one signal through a microphone array;
using information of the at least one signal to detect a sound event, the detecting the sound event including determining a sound event bearing, wherein the sound event bearing comprises an angle from a reference line to a direction of the sound event;
selecting one or more transducers using the sound event bearing and transducer bearing information of the one or more transducers, wherein each transducer of the one or more transducers is configured to deliver a correction signal along an axis, wherein the axis comprises a transducer beam spread axis, wherein the transducer bearing information includes a transducer bearing for each transducer of the one or more transducers, wherein a transducer bearing comprises an angle from a transducer beam spread axis to the reference line;
instructing the selected one or more transducers to deliver a correction signal.

17. The method of claim 16 , the selecting one or more transducers including using the transducer bearing information to compare the sound event bearing with transducer bearings of the one or more transducers.

18. The method of claim 17 , the selecting one or more transducers including selecting the one or more transducers when an absolute difference between the sound event bearing and respective transducer bearing is below a threshold value.

19. An apparatus comprising,
a microphone array and a plurality of transducers, the microphone array and the plurality of transducers communicatively coupled with at least one processor;
the microphone array for receiving at least one signal;
the plurality of transducers configured to deliver a correction signal;
one or more applications running on the at least one processor for using information of the at least one signal to detect a sound event, the detecting the sound event including determining a sound event bearing, wherein the sound event bearing comprises an angle from a reference line to a direction of the sound event, the detecting the sound event including instructing the plurality of transducers to direct a correction signal in a direction of the sound event bearing, wherein the plurality of transducers comprises a linear phased array of transducers, wherein the instructing the plurality of transducers to deliver the correction signal comprises selecting a correction signal phase difference between the transducers of the linear phased array to direct a majority of the corrections signal'sound energy along the sound event bearing.

Assignees

• Radio Systems Corp

Inventors

• Seltzer Richard
• Huber Jonathan William
• Case Paul
• Hatcher John

Classifications

• H04R5/027

  Spatial or constructional arrangements of microphones, e.g. in dummy heads · CPC title

• G10L17/26

  Recognition of special voice characteristics, e.g. for use in lie detectors; Recognition of animal voices · CPC title

• H04R5/04

  Circuit arrangements, {e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments (combinations of amplifiers H03F3/68; stereophonic systems H04S)} · CPC title

• H04R1/023

  Screens for loudspeakers · CPC title

• A01K15/022 Primary

  Anti-barking devices · CPC title