Speech-based optimization of digital hearing devices

• US 7,206,416 B2
• Filed: 06/18/2004
• Issued: 04/17/2007
• Est. Priority Date: 08/01/2003
• Status: Active Grant

• Current Assignee: Cochlear Limited, University of Florida Research Foundation, Incorporated (State University System of Florida)
• Original Assignee: Audigence Incorporated, University of Florida Research Foundation, Incorporated (State University System of Florida)
• Inventors: Krause, Lee S., Shrivastav, Rahul, Holmes, Alice E., Bedenbaugh, Purvis
• Primary Examiner(s): Mei, Xu
• Application Number:
  US10/872,313
• Publication Number:
  US 20050027537A1
• Time in Patent Office: 1,033 Days
• Field of Search: 381/60, 381/312, 381/315, 381/56, 381/58, 600/559, 704/271, 735/85
• US Class Current: 381/60
• CPC Class Codes: G10L 25/00 Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 muting semiconductor-based amplifiers when some special characteristics of a signal are sensed by a speech detector, e.g. sensing when no signal is present, H03G3/34
• CPC Class Codes: H04R 25/505 using digital signal processing
• CPC Class Codes: H04R 25/70 Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Abstract

A method of tuning a digital hearing device can include playing portions of test audio, wherein each portion of test audio represents one or more distinctive features of speech. The method also can include receiving user responses to played portions of test audio heard through the digital hearing device and comparing the user responses with the portions of test audio. An operational parameter of the digital hearing device can be adjusted according to the comparing step, wherein the operational parameter is associated with one or more of the distinctive features of speech.

Claims

1. A method of tuning a digital hearing device comprising:

playing portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

for each of the portions of test audio when heard by a user through the digital hearing device, receiving a corresponding user response prior to a subsequent portion of test audio being played;

recording each user response and generating a confusion error matrix based upon the recorded user responses;

analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive distinctive features correlated with a test word or syllable presented; and

adjusting at least one operational parameter of the digital hearing device according to said analyzing step, wherein the at least one operational parameter is associated with the one or more distinctive features of speech.

2. The method of claim 1, further comprising, prior to said adjusting step, associating the one or more distinctive features of the portions of test audio with the operational parameter of the digital hearing device.

3. The method of claim 1, wherein each distinctive feature of speech is associated with at least one frequency characteristic and the operational parameter controls processing of frequency characteristics associated with at least one of the distinctive features.

4. The method of claim 1, wherein each distinctive feature of speech is associated with at least one temporal characteristic and the operational parameter controls processing of temporal characteristics associated with at least one of the distinctive features.

5. The method of claim 1, further comprising determining that at least a portion of the digital hearing device is sub-optimally configured for a particular user based upon said analyzing step.

6. The method of claim 1, further comprising performing each said step of claim 1 for at least one different language.

7. The method of claim 1, further comprising performing each said step of claim 1 for a plurality of different users of similar hearing devices.

8. The method of claim 1, wherein each distinctive feature of speech is associated with at least one relative intensity characteristic and the operational parameter controls processing of relative intensity characteristics associated with at least one of the distinctive features.

9. A method of evaluating a communication channel comprising:

playing, over the communication channel, portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

for each portion of test audio when heard by a user over the communication channel, receiving a corresponding user response prior to a subsequent portion of test audio being played;

recording each user response and generating a confusion error matrix based upon the recorded user responses;

analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive each distinctive feature correlated with a test word or syllable presented; and

associating distinctive features of the portions of test audio with operational parameters of the communication channel.

10. The method of claim 9, further comprising adjusting at least one of the operational parameters of the communication channel according to said analyzing step.

11. The method of claim 10, wherein the communication channel comprises an acoustic environment formed by an architectural structure.

12. The method of claim 10, wherein the communication channel comprises an underwater acoustic environment.

13. The method of claim 10, wherein the communication channel comprises an aviation environment affecting speech and hearing.

14. The method of claim 13, wherein the effects include at least one of G-force, masks, and the Lombard effect.

15. The method of claim 10, wherein the portions of test audio comprise speech from a speaker experiencing at least one of stress, fatigue, and deception.

16. A system for tuning a digital hearing device comprising:

means for playing portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

means for receiving, in response to each of the portions of test audio when heard by a user through the digital hearing device, a corresponding user response prior to a subsequent portion of test audio being played;

means for recording each user response and generating a confusion error matrix based upon the recorded user responses;

means for analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive distinctive features correlated with a test word or syllable presented; and

means for adjusting at least one operational parameter of the digital hearing device according to said means for analyzing, wherein the at least one operational parameter is associated with the one or more distinctive features of speech.

17. The system of claim 16, further comprising means for associating distinctive features of the portions of test audio with the operational parameter of the digital hearing device, wherein said means for associating is operable prior to said means for adjusting.

18. A system for evaluating a communication channel comprising:

means for playing, over the communication channel, portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

means for receiving, in response to each of the portions of test audio when heard by a user through the digital hearing device, a corresponding user response prior to a subsequent portion of test audio being played;

means for recording each user response and generating a confusion error matrix based upon the recorded user responses;

means for analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive distinctive features correlated with a test word or syllable presented; and

means for associating distinctive features of the portions of test audio with operational parameters of the communication channel.

19. The system of claim 18, further comprising means for adjusting at least one of the operational parameters of the communication channel according to results obtained from said means for analyzing.

25. The machine readable storage of claim 20, further comprising performing each said step of claim 18 for at least one different language.

26. The machine readable storage of claim 20, further comprising performing each said step of claim 19 for a plurality of different users of similar hearing devices.

20. A machine readable storage, having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the steps of:

playing portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

for each of the portions of test audio when heard by a user through a digital hearing device, receiving a corresponding user response prior to a subsequent portion of test audio being played;

recording each user response and generating a confusion error matrix based upon the recorded user responses;

analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive distinctive features correlated with a test word or syllable presented; and

adjusting at least one operational parameter of the digital hearing device according to said analyzing step, wherein the at least one operational parameter is associated with the one or more distinctive features of speech.

21. The machine readable storage of claim 20, further comprising, prior to said adjusting step, associating the one or more distinctive features of the portions of test audio with the operational parameter of the digital hearing device.

22. The machine readable storage of claim 20, wherein each distinctive feature of speech is associated with at least one particular frequency characteristic and the operational parameter controls processing of frequency characteristics associated with at least one of the distinctive features.

23. The machine readable storage of claim 20, wherein each distinctive feature of speech is associated with at least one particular temporal characteristic and the operational parameter controls processing of temporal characteristics associated with at least one of the distinctive features.

24. The machine readable storage of claim 20, further comprising determining that at least a portion of the digital hearing device is sub-optimally configured for a particular user based upon said analyzing step.

27. A machine readable storage, having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the steps of:

playing, over a communication channel, portions of test audio, wherein each portion of test audio comprises a test word or syllable that is correlated with one or more distinctive features of speech;

recording each user response and generating a confusion error matrix based upon the recorded user responses

analyzing the confusion error matrix to determine the user'"'"'s ability to accurately perceive distinctive features correlated with a test word or syllable presented; and

associating distinctive features of the portions of test audio with operational parameters of the communication channel.

28. The machine readable storage of claim 27, further comprising adjusting at least one of the operational parameters of the communication channel according to said analyzing step.

29. The machine readable storage of claim 28, wherein the communication channel comprises an acoustic environment formed by an architectural structure.

30. The machine readable storage of claim 28, wherein the communication channel comprises an underwater acoustic environment.

31. The machine readable storage of claim 28, wherein the communication channel comprises an aviation environment affecting speech and hearing.

32. The machine readable storage of claim 31, wherein the effects include at least one of G-force, masks, and the Lombard effect.

33. The machine readable storage of claim 28, wherein the portions of test audio comprise speech from a speaker experiencing at least one of stress, fatigue, and deception.