Automatic performance optimization for perceptual devices

• US 8,755,533 B2
• Filed: 08/04/2008
• Issued: 06/17/2014
• Est. Priority Date: 08/04/2008
• Status: Active Grant

• Current Assignee: Cochlear Limited
• Original Assignee: Cochlear Limited
• Inventors: Banerjee, Bonny, Krause, Lee
• Primary Examiner(s): Such, Matthew W
• Assistant Examiner(s): STOWE, SCOTT C
• Application Number:
  US12/185,394
• Publication Number:
  US 20100027800A1
• Time in Patent Office: 2,143 Days
• Field of Search: 381/58, 381/60, 381/312, 381/314, 381/320, 381/321, 381/323, 600/559, 607/56, 607/57
• US Class Current: 381/58
• CPC Class Codes: H04R 25/70 Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Abstract

Systems and methods may be used to modify a controllable stimulus generated by a digital audio device in communication with a human user. An input signal is provided to the digital audio device. In turn, the digital audio device sends a stimulus based on that input signal to the human user, who takes an action, usually in the form of an output signal, to characterize the stimulus that the user receives, based on the user'"'"'s perception. An algorithm, lookup table, or other procedure then determines a difference between the input signal and the output signal, and a perceptual model is constructed based at least in part on the difference. Thereafter, a new value for the parameter of the digital audio device is suggested based at least in part on the perceptual model. This process continues iteratively until the user'"'"'s optimal device parameters are determined.

Claims

1. A method for modifying a controllable stimulus generated by a perceptual device in communication with a human user, the method comprising:

generating an input signal to the perceptual device, the perceptual device sending a stimulus to the human user, the stimulus defined at least in part by a parameter, the parameter comprising a value;

receiving an output signal from the human user, the output signal based at least in part on a perception of the stimulus by the human user;

determining a difference between the input signal and the output signal;

constructing a perceptual model based at least in part on the difference;

performing a plurality of independent algorithms on the perceptual model, wherein the plurality of independent algorithms provide at least one parameter value; and

suggesting a new value for the parameter based at least in part on the at least one parameter value provided by the plurality of independent algorithms.

2. The method of claim 1, further comprising generating a second input signal to the perceptual device based at least in part on the perceptual model.

3. The method of claim 1, wherein the input signal is an audio signal.

4. The method of claim 1, wherein the stimulus is an audio signal.

5. The method of claim 1, further comprising formulating a rule based at least in part on the perceptual model.

6. The method of claim 1, wherein suggesting the new value further comprises utilizing a knowledge base.

7. The method of claim 6, wherein the knowledge base comprises at least one of declarative knowledge and procedural knowledge.

8. The method of claim 1, wherein the perceptual device is a digital audio device.

9. A system for modifying a controllable stimulus generated by a perceptual device in communication with a human user, the system comprising:

a test set generator for generating a test set to the perceptual device, the perceptual device sending a stimulus to the human user, the stimulus defined at least in part by a parameter, the parameter comprising a value;

a signal receiver for receiving an output signal from the human user, the output signal based at least in part on a perception of the stimulus by the human user;

a perceptual model module for constructing a perceptual model based at least in part on a difference between the stimulus and the output signal; and

a parameter generator for suggesting a new value for the parameter based at least in part on the perceptual model, wherein suggesting the value for the parameter comprises;

performing a plurality of independent algorithms on the perceptual model, wherein the plurality of independent algorithms provide at least one parameter value; and

suggesting a new value for the parameter based at least in part on the at least one parameter value provided by the plurality of independent algorithms.

10. The system of claim 9, further comprising a second test set generator for generating a second test set to the perceptual device based at least in part on the perceptual model.

11. The system of claim 9, wherein the stimulus is an audio signal.

12. The system of claim 9, further comprising a storage module for storing information used in the construction of the perceptual model.

13. The system of claim 12, wherein the information stored in the storage module comprises a knowledge base.

14. The system of claim 9, further comprising a rule extraction module for formulating a rule based at least in part on the perceptual model.

15. The system of claim 12, wherein the parameter generator suggests the new value for the parameter based at least in part on at least one of information obtained from the storage module and information obtained from the perceptual model module.

16. The system of claim 10, wherein the test set generator comprises the second test set generator.

17. An article of manufacture having computer-readable portions embodied thereon for modifying a controllable stimulus generated by a perceptual device in communication with a user, the article comprising:

computer readable instructions for providing an input signal to the perceptual device, the perceptual device sending a stimulus to the human user, the stimulus defined at least in part by a parameter, the parameter comprising a value;

computer readable instructions for receiving an output signal from the human user, the output signal based at least in part on a perception of the stimulus by the human user;

computer readable instructions for determining a difference between the input signal and the output signal;

computer readable instructions for constructing a perceptual model based at least in part on the difference;

computer readable instructions for performing a plurality of independent algorithms on the perceptual model, wherein the plurality of independent algorithms provide at least one parameter value; and

computer readable instructions for suggesting a new value for the parameter based at least in part on the at least one parameter value provided by the plurality of independent algorithms.

18. The article of manufacture of claim 17, further comprising computer readable instructions for providing a second input signal to the perceptual device based at least in part on the perceptual model.

19. The article of manufacture of claim 17, wherein the input signal is an audio signal.

20. The article of manufacture of claim 17, wherein the stimulus is an audio signal.