Speech discrimination in automated diagnostic hearing test

• US 20040068200A1
• Filed: 05/16/2003
• Published: 04/08/2004
• Est. Priority Date: 05/23/2002
• Status: Active Grant

• Current Assignee: Biocell LP, Ototronix, LLC
• Original Assignee: Tympany Inc. (Tympany Holdings LLC)
• Inventors: Wasden, Christopher L., Thornton, Aaron, Stott, Kenneth R., Strasnick, Barry, Harrison, Jeffrey S.
• Granted Patent: US 7,288,071 B2
• Time in Patent Office: Days
• US Class Current: 600/559
• CPC Class Codes: A61B 5/0051 by applying vibrations
• CPC Class Codes: A61B 5/12 Audiometering
• CPC Class Codes: A61B 5/121 evaluating hearing capacity
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: H04R 2460/13 Hearing devices using bone conduction transducers
• CPC Class Codes: H04R 25/606 acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window
• CPC Class Codes: H04R 25/70 Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Abstract

Method and system are disclosed for automated testing of a patient'"'"'s hearing. The automated hearing test allows the patient to quickly and accurately test his own hearing with minimal or no assistance from an audiologist or other hearing health professionals. The test prompts and instructs the patient for inputs and responses as needed as needed. The patient can select one or several tests to be performed, including air and bone conduction testing with masking, speech reception threshold, speech discrimination, and tympanogram/acoustic reflex testing. Multiple languages are supported. Data obtained from one test may be used for another test or another iteration of the same test to calculate masking levels. The automatic hearing test also detects ambient noise and can compensate for it in the test results. If a contingency occurs, the automated hearing test is configured to page the operator for assistance.

Claims

1. A computer-based, multimedia method for allowing the patient to quickly and conveniently test his speech discrimination threshold without a sound isolation chamber and with minimal assistance from an operator, comprising:

selecting several word-picture groups from a pool of word-picture groups for presentation to the patient;

determining an optimal intensity level and a masking level to be used for the presentation;

presenting the word-picture groups to the patient one word-picture group at a time at the optimal intensity level and the masking level;

checking whether termination conditions have been met upon receiving a response to the presentation; and

generating a speech discrimination accuracy score based on the responses from the patient if the termination condition have been.

2. The method according to claim 1, wherein the step of determining a masking level includes determining if there is a masking dilemma.

3. The method according to claim 1, wherein the step of determining an optimal intensity level includes calculating a best performance point on a performance intensity curve.

4. The method according to claim 1, wherein the word-picture groups are randomly selected.

5. The method according to claim 1, wherein the termination conditions include a predetermined percentage of correct responses based on a minimum number of correct responses.

6. The method according to claim 1, wherein the termination conditions include a predetermined number of total responses.

7. The method according to claim 1, wherein the termination conditions are checked on a word-picture group by word-picture group basis.

8. The method according to claim 1, wherein the same picture group is used for each word.

9. The method according to claim 1, wherein no two words may have the same picture groups.

10. The method according to claim 1, further comprising correcting the speech discrimination accuracy score for guessing.

11. A computer-based, multimedia system for allowing a patient to quickly and conveniently test his own speech discrimination threshold without a sound isolation chamber and with minimal assistance from an operator, comprising:

transducers, including an air conduction transducer and a bone conduction transducer;

a hearing test device capable of producing tones, speech, and masking noise connected to the transducers;

a computer connected to the hearing test device and storing an automated hearing test thereon, the automated hearing test configured to cause the computer to;

select several word-picture groups from a pool of word-picture groups for presentation to the patient;

determine an optimal intensity level and a masking level to be used for the presentation;

present the word-picture groups to the patient one word-picture group at a time at the optimal intensity level and the masking level;

check whether termination conditions have been met upon receiving a response to the presentation; and

generate a speech discrimination accuracy score based on the responses from the patient if the termination condition have been.

12. The system according to claim 11, wherein the automated hearing test further causes the computer to determine if there is a masking dilemma.

13. The system according to claim 11, wherein the automated hearing test causes the computer to determine the optimal intensity level by calculating a best performance point on a performance intensity curve.

14. The system according to claim 11, wherein the automated hearing test causes the computer to select the word-picture groups randomly.

15. The system according to claim 11, wherein the automated hearing test causes the computer to check the termination conditions by checking for a predetermined percentage of correct responses based on a minimum number of correct responses.

16. The system according to claim 11, wherein the automated hearing test causes the computer to check the termination conditions by checking for a predetermined number of total responses.

17. The system according to claim 11, wherein the automated hearing test causes the computer to check the termination conditions a word-picture group by word-picture group basis.

18. The system according to claim 11, wherein the automated hearing test causes the computer to use the same picture group for each word.

19. The system according to claim 11, wherein no two words may have the same picture groups.

20. The system according to claim 11, wherein the automated hearing test further causes the computer to correct the speech discrimination accuracy score for guessing.