Self-organized acoustic signal cancellation over a network

Patent metadata

Field	Value
Publication number	US-10242658-B2
Application number	US-201715808281-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Oct 31, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A system for self-organized acoustic signal cancellation over a network is disclosed. The system may transmit an acoustic sounding signal to an interfering device so that a channel measurement may be performed for a channel between the interfering device and an interferee device. The system may receive the channel measurement for the channel from the interfering device and also receive a digitized version of an audio interference signal associated with the interfering device. Based on the channel measurement and the digital version of the interference signal, the system may calculate a cancellation signal prior to the arrival of the original over-the-air audio interference signal that corresponds to the digital version of audio interference signal. The system may then apply the cancellation signal to an audio signal associated with the interferee device to remove the interference signal from the audio signal.

First claim

We claim:

1. A system, comprising:
a memory that stores instructions;
a processor that executes the instructions to perform operations, the operations comprising:
receiving, prior to an interference signal arriving at an interferee device, a digitized version of the interference signal, wherein the interference signal is associated with an interfering device;
calculating a cancellation signal based on the digitized version of the interference signal; and
applying the cancellation signal to an audio signal associated with the interferee device in order to remove the interference signal from the audio signal.

2. The system of claim 1 , wherein the operations further comprise receiving, from the interfering device, a channel measurement for a channel between the interfering device and the interferee device.

3. The system of claim 2 , wherein the operations further comprise calculating the cancellation signal based on the channel measurement for the channel between the interfering device and the interferee device.

4. The system of claim 1 , wherein the operations further comprise announcing a capability of the interfering device.

5. The system of claim 1 , wherein the operations further comprise transmitting a query on a channel to obtain an identity of the interfering device.

6. The system of claim 1 , wherein the operations further comprise transmitting an acoustic sounding signal to the interfering device so as to perform a channel measurement for a channel between the interfering device and the interferee device.

7. The system of claim 1 , wherein the operations further comprise determining that the interfering device is an interferer based on a microphone of the interferee device detecting an increase in noise level.

8. The system of claim 1 , wherein the operations further comprise utilizing a communications channel to announce an upcoming channel measurement acoustic signal.

9. The system of claim 1 , wherein the operations further comprise transmitting, by utilizing the interferee device, an announcement declaring a single tone acoustic signal of a selected frequency.

10. The system of claim 1 , wherein the operations further comprise transmitting, by utilizing the interferee device, an announcement declaring a series of tones associated with a set of frequencies.

11. The system of claim 10 , wherein the operations further comprise transmitting the announcement with an identity of an announcer associated with the announcement.

12. The system of claim 1 , wherein the operations further comprise determining that the interfering device is an interferer based on the interfering device having been previously identified as the interferer.

13. The system of claim 1 , wherein the operations further comprise determining that the interfering device is in a vicinity of the interferee device.

14. A method, comprising:
obtaining, prior to an interference signal arriving at an interferee device, a digitized version of the interference signal, wherein the interference signal is associated with an interfering device;
calculating, by utilizing instructions from a memory that are executed by a processor, a cancellation signal based on the digitized version of the interference signal; and
applying the cancellation signal to an audio signal associated with the interferee device in order to remove the interference signal from the audio signal.

15. The method of claim 14 , further comprising receiving, from the interfering device, a channel measurement for a channel between the interfering device and the interferee device.

16. The method of claim 15 , further comprising calculating the cancellation signal based on the channel measurement for the channel between the interfering device and the interferee device.

17. The method of claim 14 , further comprising utilizing an audio-radio cooperation protocol to determine an identity of the interfering device and an identity of the interferee device.

18. The method of claim 14 , further comprising announcing noise a noise cancellation capability of the interferee device over a channel.

19. The method of claim 14 , further comprising announcing a speech enhancement capability of the interferee device over a channel.

20. A computer-readable device comprising instructions, which when executed by a processor, cause the processor to perform operations comprising:
receiving, prior to an interference signal arriving at an interferee device, a digitized version of the interference signal, wherein the interference signal is associated with an interfering device;
calculating a cancellation signal based on the digitized version of the interference signal; and
applying the cancellation signal to an audio signal associated with the interferee device in order to remove the interference signal from the audio signal.

Assignees

• At & T Ip I Lp

Inventors

• Ji Lusheng
• Bowen Donald J
• Dimitriadis Dimitrios B
• Schroeter Horst J

Classifications

• G10K2210/111

  Directivity control or beam pattern · CPC title

• H04R3/005 Primary

  for combining the signals of two or more microphones (specially adapted for hearing aids H04R25/407) · CPC title

• G10K2210/3023

  Estimation of noise, e.g. on error signals · CPC title

• G10K2210/108

  Communication systems, e.g. where useful sound is kept and noise is cancelled · CPC title

• H04R2410/05

  Noise reduction with a separate noise microphone · CPC title