HEADSET IN-USE DETECTOR

• US 20150124977A1
• Filed: 11/07/2013
• Published: 05/07/2015
• Est. Priority Date: 11/07/2013
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Srivastava, Ankit, Park, Hyun Jin, Miao, Guoqing
• Application Number:
  US14/074,593
• Publication Number:
  US 20150124977A1
• Time in Patent Office: Days
• US Class Current: 381/58
• CPC Class Codes: H04R 1/1091 Details not provided for in groups H04R1/1008 - H04R1/1083
• CPC Class Codes: H04R 2460/03 Aspects of the reduction of energy consumption in hearing devices
• CPC Class Codes: H04R 2460/15 Determination of the acoustic seal of ear moulds or ear tips of hearing devices
• CPC Class Codes: H04R 25/305 Self-monitoring or self-testing
• CPC Class Codes: H04R 29/00 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 Class Codes: H04R 29/001 for loudspeakers H04R29/007 takes precedence

Abstract

A headset in-use detector is disclosed. In an exemplary embodiment, an apparatus includes a detector configured to receive a sound signal and an echo signal and generate a detection signal, and a controller configured to determine whether or not a headset is in-use based on the detection signal.

Claims

1. An apparatus comprising:

a detector configured to receive a sound signal and an echo signal and generate a detection signal; and

a controller configured to determine whether or not a headset is in-use based on the detection signal.

2. The apparatus of claim 1, further comprising a microphone configured to generated the echo signal from on an acoustic version of the sound signal that is generate by the headset.

3. The apparatus of claim 1, the detector comprising:

a processor configured to generate an acoustic transfer function;

a filter processor configured to filter the acoustic transfer function to generate a filtered acoustic transfer function; and

a compare processor configured to compare the filtered acoustic transfer function to a reference to generate the detection signal.

4. The apparatus of claim 3, the processor configured to perform a least mean square (LMS) operation to generate the acoustic transfer function.

5. The apparatus of claim 3, the reference determined from acoustic properties of the headset that are stored in a memory.

6. The apparatus of claim 3, the reference comprising a previously determined acoustic transfer function that is stored in a memory.

7. The apparatus of claim 1, the detector comprising:

a processor configured to generate power values for the sound signal and the echo signal;

a computing processor configured to determine a ratio of the power values; and

a compare processor configured to compare the ratio to a reference to generate the detection signal.

8. The apparatus of claim 7, the processor configured to calculate root mean square (RMS) values for the power values of the sound signal and the echo signal.

9. The apparatus of claim 8, the computing processor configured to generate the ratio by dividing the RMS values.

10. The apparatus of claim 7, the reference is a selected power level.

11. An apparatus comprising:

means for generating a detection signal based on a sound signal and an echo signal; and

means for determining whether or not a headset is in-use based on the detection signal.

12. The apparatus of claim 11, further comprising means for generating the echo signal from an acoustic version of the sound signal that is generated by the headset.

13. The apparatus of claim 11, the means for generating the detection signal comprising:

means for generating an acoustic transfer function;

means for filtering the acoustic transfer function to generate a filtered acoustic transfer function; and

means for comparing the filtered acoustic transfer function to a reference to generate the detection signal.

14. The apparatus of claim 13, the means for generating the acoustic transfer function configured to perform a least mean square (LMS) operation to generate the acoustic transfer function.

15. The apparatus of claim 11, the reference determined from acoustic properties of the headset that are stored in a memory.

16. The apparatus of claim 11, the reference comprising a previously determined acoustic transfer function that is stored in a memory.

17. The apparatus of claim 11, the means for generating the detection signal comprising:

means for generating power values for the sound signal and the echo signal;

means for determining a ratio of the power values; and

means for comparing the ratio to a reference to generate the detection signal.

18. The apparatus of claim 17, the means for generating the power values configured to calculate root mean square (RMS) values for the sound signal and the echo signal.

19. The apparatus of claim 17, the reference is a selected power level.

20. An apparatus comprising:

a first processor configured to receive a sound signal and generate a processed sound signal;

a second processor configured to receive an echo signal and generate a processed echo signal; and

a third processor configured to generate a detection signal the indicates whether or not a headset is in-use based on at least one of the processed sound signal and the processed echo signal.