Utilizing information from a number of sensors to suppress acoustic noise through an audio processing system

• US 8,666,082 B2
• Filed: 11/16/2010
• Issued: 03/04/2014
• Est. Priority Date: 11/16/2010
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: LSI Corporation (Broadcom, Inc.)
• Inventors: Dreifus, David L, Fratti, Roger A
• Primary Examiner(s): Mei, Xu
• Assistant Examiner(s): Tran, Con P
• Application Number:
  US12/946,877
• Publication Number:
  US 20120121097A1
• Time in Patent Office: 1,204 Days
• Field of Search: 381/57, 381/56, 381/122, 381/164, 381/150, 381/91, 381/92, 381/94.1, 381/71.1, 735/140.1, 735/141.5, 702/54, 702/141, 324/160
• US Class Current: 381/57
• CPC Class Codes: H03G 3/3005 in amplifiers suitable for low-frequencies, e.g. audio amplifiers H03G3/32, H03G3/34 take precedence
• CPC Class Codes: H03G 3/3089 Control of digital or coded signals
• CPC Class Codes: H03G 3/32 the control being dependent upon ambient noise level or sound level

Abstract

A method includes associating a spatially separate audio sensor and/or a vibration sensor with an audio processing system having one or more audio sensor(s) associated therewith. The spatially separate audio sensor is on a remote location distinct from that of the one or more audio sensor(s). The method also includes capturing information uniquely associated with an external environment of the audio processing system through the spatially separate audio sensor and/or the vibration sensor and the one or more audio sensor(s), and adapting an audio output of the audio processing system based on the captured information uniquely associated with the external environment thereof.

Claims

1. A method comprising:

associating at least one of a spatially separate audio sensor and a vibration sensor with an audio processing system having at least one audio sensor associated therewith, the spatially separate audio sensor being on a remote location distinct from that of the at least one audio sensor;

capturing information uniquely associated with an external environment of the audio processing system through the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor;

adapting an audio output of the audio processing system based on the captured information uniquely associated with the external environment thereof; and

characterizing the external environment of the audio processing system through a processor of the audio processing system such that at least one unwanted signal source is isolated from a desired audio source associated with the audio processing system,

wherein when there are a plurality of unwanted signal sources captured through the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor, each of the plurality of unwanted signal sources are isolated from one another during the characterization of the external environment.

2. The method of claim 1, wherein adapting the audio output of the audio processing system based on the captured information uniquely associated with the external environment thereof comprises increasing a signal level associated with the audio output based on a captured vibration information associated with the external environment.

3. The method of claim 2, further comprising:

canceling an unwanted signal associated with a noise source in the external environment from the audio output.

4. The method of claim 1, wherein the vibration sensor is an accelerometer.

5. The method of claim 1,

wherein one of the spatially separate audio sensor and the at least one audio sensor is configured to be associated with a Bluetooth transceiver external to the audio processing system.

6. The method of claim 5, wherein the audio processing system comprises an appropriate Bluetooth transceiver configured to receive information from the external Bluetooth transceiver.

7. The method of claim 1, further comprising:

detecting a presence of at least one of the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor during at least one of a start-up of a device including the audio processing system and a configuration change associated with the device including the audio processing system; and

activating at least one of the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor based on a change in the external environment.

8. The method of claim 7, wherein the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor are one of:

built into the device including the audio processing system,

associated with one of a wired headset microphone, a wireless headset microphone and a hands-free microphone, and

associated with a microphone provided on another device associated with the device including the audio processing system.

9. The method of claim 1, wherein characterizing the external environment of the audio processing system further comprises at least one of:

utilizing an inherent frequency selection difference between the spatially separate audio sensor and the at least one audio sensor therefor;

modifying a bandwidth of at least one of the spatially separate audio sensor and the at least one audio sensor therefor; and

modifying at least one of a shape, a dimension and a position of the at least one of the spatially separate audio sensor and the at least one audio sensor therefor.

10. A method comprising:

associating at least one of a spatially separate audio sensor and a vibration sensor with an audio processing system having at least one audio sensor associated therewith, the spatially separate audio sensor being on a remote location distinct from that of the at least one audio sensor;

activating the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor based on a change in an external environment of the audio processing system;

capturing information uniquely associated with the external environment of the audio processing system through the activated at least one of the spatially separate audio sensor and the vibration sensor and the activated at least one audio sensor; and

characterizing the external environment of the audio processing system through a processor of the audio processing system such that at least one unwanted signal source is isolated from a desired audio source associated with the audio processing system,

wherein when there are a plurality of unwanted signal sources captured through the activated at least one of the spatially separate audio sensor and the vibration sensor and the activated at least one audio sensor, each of the plurality of unwanted signal sources are isolated from one another during the characterization of the external environment.

11. The method of claim 10, further comprising adapting an audio output of the audio processing system based on the captured information uniquely associated with the external environment thereof.

12. The method of claim 10, wherein adapting the audio output of the audio processing system based on the captured information uniquely associated with the external environment thereof comprises increasing a signal level associated with the audio output based on a captured vibration information associated with the external environment.

13. The method of claim 12, further comprising:

canceling an unwanted signal associated with a noise source in the external environment from the audio output.

14. The method of claim 10, wherein the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor are one of:

built into a device including the audio processing system,

associated with one of a wired headset microphone, a wireless headset microphone and a hands-free microphone, and

associated with a microphone provided on another device associated with the device including the audio processing system.

15. An audio processing system comprising:

at least one audio sensor;

at least one of a spatially separate audio sensor and a vibration sensor, the spatially separate audio sensor being on a remote location distinct from that of the at least one audio sensor, and the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor being configured to capture information uniquely associated with an external environment of the audio processing system; and

a processor configured to process the captured information uniquely associated with the external environment to enable an appropriate adaptation of an audio output of the audio processing system,

wherein the processor is further configured to characterize the external environment such that at least one unwanted signal source is isolated from a desired audio source associated with the audio processing system, and

wherein when there are a plurality of unwanted signal sources captured through the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor, the processor is configured to isolate each of the plurality of unwanted signal sources from one another during the characterization of the external environment.

16. The audio processing system of claim 15, wherein the processor is configured to enable adaptation of the audio output of the audio processing system through increasing a signal level associated with the audio output based on a captured vibration information associated with the external environment.

17. The audio processing system of claim 16, wherein the processor is further configured to enable

canceling of an unwanted signal associated with a noise source in the external environment from the audio output.

18. The audio processing system of claim 15, wherein the vibration sensor is an accelerometer.

19. The audio processing system of claim 15,

wherein one of the spatially separate audio sensor and the at least one audio sensor is configured to be associated with a Bluetooth transceiver external to the audio processing system.

20. The audio processing system of claim 19, wherein the audio processing system further comprises an appropriate Bluetooth transceiver configured to receive information from the external Bluetooth transceiver.

21. The audio processing system of claim 15, wherein the at least one of the spatially separate audio sensor and the vibration sensor and the at least one audio sensor are one of:

built into a device including the audio processing system,

associated with one of a wired headset microphone, a wireless headset microphone and a hands-free microphone, and

associated with a microphone provided on another device associated with the device including the audio processing system.