Techniques for autonomously calibrating an audio system

Patent metadata

Field	Value
Publication number	US-10136234-B2
Application number	US-201514712835-A
Country	US
Kind code	B2
Filing date	May 14, 2015
Priority date	May 14, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

One embodiment of the present invention sets forth a technique for calibrating an audio system. The technique includes transmitting information to a robotic vehicle for positioning a microphone at a plurality of different listening locations within a listening environment and, for each different listening location, acquiring a sound measurement via the microphone. The technique further includes calibrating at least one audio characteristic of the audio system based on the sound measurements acquired at the different listening locations.

First claim

What is claimed is:

1. A method for calibrating an audio system, the method comprising:
transmitting information to an aerial robotic vehicle for positioning a microphone at a plurality of different listening locations within a listening environment, wherein the aerial robotic vehicle includes one or more propulsion pods for flying to the plurality of different listening locations; and,
for each of the different listening locations, acquiring a sound measurement via the microphone while causing a reduction in power supplied to at least one of the one or more propulsion pods to cause the aerial robotic vehicle to travel along a parabolic elliptic flight path;
receiving, from the aerial robotic vehicle through a wireless connection, the sound measurements acquired at the different locations; and
calibrating at least one audio characteristic of the audio system based on the sound measurements acquired at the different listening locations.

2. The method of claim 1 , wherein the information comprises, for each different listening location, a specific location defined by at least three coordinates.

3. The method of claim 1 , further comprising causing a continuous sound measurement to be acquired via the microphone while causing the aerial robotic vehicle to navigate between at least two different listening locations included in the plurality of different listening locations.

4. The method of claim 3 , further comprising processing the continuous sound measurement based on a speed of the aerial robotic vehicle and a direction of travel of the aerial robotic vehicle to generate a processed sound measurement, wherein the at least one characteristic of the audio system is calibrated based on the processed sound measurement.

5. The method of claim 1 , further comprising causing the microphone to be moved away from at least one of the one or more propulsion pods of the aerial robotic vehicle by a first distance prior to acquiring at least one of the sound measurements.

6. The method of claim 1 , further comprising processing at least one of the sound measurements to cancel propulsion noise of the aerial robotic vehicle to generate a processed sound measurement, wherein the at least one characteristic of the audio system is calibrated based on the processed sound measurement.

7. The method of claim 1 , further comprising causing at least one additional aerial robotic vehicle to fly in formation with the aerial robotic vehicle while the aerial robotic vehicle is positioning the microphone at the plurality of different listening locations, wherein at least one of the sound measurements is acquired while the microphone is suspended between the aerial robotic vehicle and the at least one additional aerial robotic vehicle.

8. The method of claim 1 , wherein the information is wirelessly transmitted to the aerial robotic vehicle.

9. A system for calibrating an audio system, the system comprising:
a memory; and
a processor coupled to the memory and configured to:
transmit information to an aerial vehicle for positioning a microphone at a plurality of different listening locations within a listening environment, wherein the aerial vehicle includes one or more propulsion pods for flying to the plurality of different listening locations,
for each of the different listening locations, acquire a sound measurement via the microphone while causing a reduction in power supplied to at least one of the one or more propulsion pods to cause the aerial robotic vehicle to travel along a parabolic elliptic flight path, and
calibrate at least one audio characteristic of the audio system based on the sound measurements acquired at the different listening locations.

10. The system of claim 9 , wherein the processor is further configured to cause the aerial vehicle to at least one of attach to a wall, attach to a ceiling, and perch on a ledge, wherein at least one of the sound measurements is acquired while the aerial vehicle is attached to the wall, attached to the ceiling, or perched on the ledge.

11. The system of claim 9 , further comprising the aerial vehicle, wherein the aerial vehicle comprises a motor configured to move the microphone away from at least one of the one or more propulsion pods by a first distance, wherein the processor is configured to cause at least one of the sound measurements to be acquired while the microphone is the first distance away from the at least one of the one or more propulsion pods.

12. The system of claim 9 , further comprising the aerial vehicle, wherein the aerial vehicle comprises a plurality of microphones configured to acquire each of the sound measurements, and the processor is further configured to analyze propulsion noise acquired by each of the microphones and process at least one sound measurement based on the propulsion noise to generate a processed sound measurement.

13. The system of claim 9 , further comprising the aerial vehicle, wherein the aerial vehicle comprises a motor configured to change the position of the microphone relative to a body of the aerial vehicle.

14. The system of claim 13 , wherein at least one listening location included in the plurality of different listening locations is further defined by at least one orientation component, and the processor is further configured to cause the motor to change the position of the microphone relative to the body of the aerial vehicle based on the at least one orientation component.

15. The system of claim 9 , wherein the processor is further configured to cause the reduction in power supplied to at least one of the one or more propulsion pods included in the aerial vehicle while the aerial vehicle is ascending.

16. The system of claim 9 , further comprising the aerial vehicle, wherein the aerial vehicle comprises an ejection device configured to eject the microphone above the aerial vehicle and catch the microphone, wherein at least one of the sound measurements is acquired while the microphone is above the aerial vehicle.

17. The system of claim 9 , further comprising the aerial vehicle, wherein the aerial vehicle comprises at least one of a tether configured to couple the aerial vehicle to a ceiling structure and a wind drag mechanism configured to be deployed during the reduction in power supplied to at least one of the one or more propulsion pods.

18. A non-transitory computer-readable storage medium including instructions that, when executed by a processor, cause the processor to acquire sound measurements, by performing the step of:
transmitting information to an aerial vehicle for positioning a microphone at a plurality of different listening locations within a listening environment, wherein the aerial vehicle includes one or more propulsion pods for flying to the plurality of different listening locations;
for each of the different listening locations, acquiring a sound measurement via the microphone while causing a reduction in power supplied to at least one of the one or more propulsion pods to cause the aerial robotic vehicle to travel along a parabolic elliptic flight path; and
calibrating at least one audio characteristic of the audio system based on the sound measurements acquired at the different listening locations.

19. The non-transitory computer-readable storage medium of claim 18 , wherein the information comprises, for each different listening location, a specific location defined by at least three coordinates.

Assignees

• Harman Int Ind
• Harman Int Ind

Inventors

• Di Censo Davide
• Marti Stefan
• Nahman Jaime Elliot

Classifications

• H04R29/00 Primary

  Monitoring arrangements; Testing arrangements {(for hearing aids H04R25/30; detection of loudspeaker connection H04R5/04; sound-field adaptation dependent on speaker detection H04S7/308)} · CPC title

• H04R29/007

  for public address systems (public address systems per se H04R27/00) · CPC title

• H04S7/301 Primary

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

• B64U10/13

  Flying platforms · CPC title

• B64C2201/12

  Operations & Transport · mapped topic