Therapeutic device to ameliorate stuttering

• US 5,961,443 A
• Filed: 04/01/1997
• Issued: 10/05/1999
• Est. Priority Date: 07/31/1996
• Status: Expired due to Term

• Current Assignee: East Carolina University
• Original Assignee: East Carolina University
• Inventors: Kalinowski, Joseph Stanley, Rastatter, Michael Pierre, Stuart, Andrew Michael
• Primary Examiner(s): Brown, Michael A.
• Application Number:
  US08/831,043
• Time in Patent Office: 917 Days
• Field of Search: 128/846, 128/864-868, 600/23, 600/24, 600/27, 600/28
• US Class Current: 600/23
• CPC Class Codes: A61F 5/58 Apparatus for correcting stammering or stuttering

Abstract

A device and method for ameliorating stuttering by providing an altered auditory feedback by employing a compact device configured for positioning in or adjacent the ear canal of an individual. The portable, self-contained device can be used on a "chronic" basis and includes a receiver for receiving auditory signals, an auditory delay and or frequency shift circuit, and a transmitter for transmitting the altered signal to the individual user.

Claims

1. A device for ameliorating stuttering supported by the ear of an individual, said device comprising:

(a) a housing having opposing distal and proximal surfaces, wherein at least said proximal surface configured for positioning within the ear canal of said individual;

(b) a wave signal processor contained within said housing, said wave signal processor comprising;

(i) a receiver, said receiver generating an input signal responsive to an auditory signal associated with said individual'"'"'s speech;

(ii) a delayed auditory feedback circuit operably associated with said receiver for generating a delayed auditory signal; and

(iii) a transmitter contained within said housing and operably associated with said delayed auditory feedback circuit for transmitting a delayed auditory signal to said individual; and

(c) a power source operatively associated with said wave signal processor for supplying power thereto.

2. A device according to claim 1, wherein said device is an ITE device.

3. A device according to claim 1, wherein said device is a CIC device.

4. A device according to claim 1, wherein said receiver is positioned within a distance of about 1 cm. to 7 cm. from the external acoustic meatus of the ear.

5. A device according to claim 4, wherein said receiver is a microphone, and wherein said microphone is positioned on the distal surface of said housing.

6. A device according to claim 5, wherein said microphone is positioned within about 4 cm from the acoustic meatus of said individual.

7. A device according to claim 1, further comprising adjustable gain, power, and frequency response components operably associated with said wave signal processor and disposed in said housing.

8. A device according to claim 1, wherein said delayed auditory feedback circuit provides a delay of about at least 25 milliseconds.

9. A device according to claim 8, wherein said device shifts the frequency of said delayed feedback signal between about plus one-half octave to about minus one-half octave.

10. A device according to claim 8, further comprising:

an activation circuit responsive to an auditory signal for activating said signal processor to an operative condition and deactivating said signal processor to a non-operative condition responsive to an absence of an auditory signal.

11. A device according to claim 8, further comprising:

a detetctor operably associated with said receiver for detecting at least one stuttering event.

12. A device according to claim 1, wherein said wave signal processor is configured to shift the frequency of said auditory input signal.

13. A device according to claim 1, wherein said delayed auditory feedback circuit includes an adjustable delay for adjusting the delay provided by said delayed auditory feedback circuit, said adjustable delay configured so that increased time delays are provided for increasing numbers of detected stuttering events.

14. A device according to claim 1, wherein said device has a peak saturated sound pressure level-90 (SSPL90) equal to or below 110 decibels.

15. A device according to claim 14, wherein said device has a high frequency average (HFA) SSPL90 less than about 105 dB.

16. A device according to claim 15, wherein said device has a HFA full on gain less than about 45 dB.

17. A device according to claim 1, wherein said device has a peak gain less than about 50 dB.

18. A device according to claim 1, wherein said device has a frequency response in the range of about 200-4000 Hz.

19. A device according to claim 18, wherein the frequency response is substantially flat.

20. A device according to claim 1, wherein said device has a frequency response in the range of about 200-8000 Hz.

21. A device according to claim 1, wherein said device includes compensatory gain between about 1000-4000 Hz thereby compensating for the loss of natural external ear resonance introduced by said device.

22. A device according to claim 21, wherein said compensatory gain is in the range of about 10-20 dB.

23. A device according to claim 1, wherein said device is devoid of remotely positioned transducer and tactile apparatus.

24. A device according to claim 1, wherein said device includes two separate housings configured to provide binaural altered auditory feedback, and wherein one proximal surface of each of said housings is configured to be positioned in a different ear of an individual.

25. A device for ameliorating stuttering positioned BTE of an individual, said device comprising:

(a) an ear mold having a portion adapted to be received into the ear of said individual;

(b) a housing in communication with said ear mold configured for positioning behind the ear of said individual;

(c) a receiver positioned adjacent said housing, said receiver generating an input signal responsive to an auditory signal associated with speech of said individual;

(d) a delayed auditory feedback circuit disposed in said housing and operatively associated with said receiver for generating a delayed auditory signal;

(e) a transmitter operably associated with said delayed auditory feedback circuit for transmitting the delayed auditory signal to the individual; and

(f) a power source operatively associated with said receiver, said delayed auditory feedback circuit, and said transmitter for supplying power thereto.

26. A device according to claim 25, wherein said receiver is positioned within a distance of about 1 centimeter to 7 centimeters from the external acoustic meatus of the ear.

27. A device according to claim 25, further comprising adjustable gain, power, and frequency response components operably associated with said delayed auditory feedback circuit and disposed in said housing.

28. A device according to claim 25, wherein said delayed auditory feedback circuit provides a delay of about at least 25 milliseconds.

29. A device according to claim 25, wherein said delayed auditory feedback circuit includes an adjustable delay for adjusting the delay provided by said delayed auditory feedback circuit, said adjustable delay configured so that increased time delays are provided for increasing numbers of detected stuttering events.

30. A device according to claim 25, further comprising:

an activation circuit responsive to an auditory signal for activating said signal processor to an operative condition and deactivating said signal processor to a non-operative condition responsive to an absence of an auditory signal.

31. A device according to claim 30, further comprising:

a detector operably associated with said receiver for detecting at least one stuttering event.

32. A device according to claim 25, wherein said receiver is a microphone, and wherein said microphone is disposed on the top of the housing such that when worn it is positioned in an anterior-superior location relative to the wearer'"'"'s ear so as to freely intercept and receive the user'"'"'s auditory signals.

33. A device according to claim 25, wherein properly positioned on said individual said microphone is positioned within about 4 cm from the acoustic meatus of said individual.

34. A device according to claim 25, wherein said device has a peak saturated sound pressure level-90 (SSPL90) equal to or below 110 decibels.

35. A device according to claim 25, wherein said device has a high frequency average (HFA) SSPL90 less than about 105 dB.

36. A device according to claim 35, wherein said device has a HFA full on gain less than about 45 dB.

37. A device according to claim 25, wherein said device has a peak gain less than about 50 dB.

38. A device according to claim 25, wherein said device has a frequency response in the range of about 200-4000 Hz.

39. A device according to claim 25, wherein said device has a frequency response in the range of about 200-8000 Hz.

40. A device according to claim 39, wherein the frequency response is substantially flat.

41. A device according to claim 40, wherein said device includes compensatory gain between about 1000-4000 Hz thereby compensating for the loss of natural external ear resonance introduced by said device.

42. A device according to claim 41, wherein said compensatory gain is in the range of about 10-20 dB.

43. A device according to claim 25, wherein said device is configured to shift the frequency of said feedback signal.

44. A device according to claim 43, wherein said frequency shift is between about plus one-half octave to minus one-half octave.

45. A device according to claim 25, wherein said device includes two separate housings configured to provide binaural altered auditory feedback, and wherein one proximal surface of each of said housings is configured to be positioned in a different ear of an individual.

49. The method according to claim 44, further comprising the step of adjusting the delay of said delayed auditory signal delay responsive to the determination of said comparing step, thereby increasing or decreasing the time delay output from said delay circuit corresponding to the number of stuttering events detected.

46. A method for chronic amelioration of stuttering, comprising the steps of:

(a) positioning a self-contained ameliorative stuttering device for receiving auditory signals associated with an individual'"'"'s speech in close proximity to the ear of an individual, the device being adapted to be in communication with the ear canal of said individual;

(b) receiving an audio signal associated with said individual'"'"'s speech;

(c) generating a delayed auditory signal responsive to the received audio signal;

(d) transmitting the delayed auditory signal to the ear canal of the individual.

47. The method according to claim 46, wherein said delayed auditory signal is delayed at least 25 milliseconds.

48. The method according to claim 46, further comprising the step of comparing a series of digitized voices samples input to the delay circuit with the output from the delay circuit to determine if the timing of the output auditory delay signal is sufficient.

50. The method according to claim 46, wherein said stuttering device is worn a minimum of 3 hours during each day of use.

51. The method according to claim 50, wherein said stuttering device is worn a majority of days within each treatment period.

52. The method according to claim 51, wherein said stuttering device is worn a consecutive number of days within each treatment period.

53. The method according to claim 46, wherein said stuttering device is worn in both ears.

54. The method according to claim 46, further comprising the step of generating a frequency shift in said time delayed feedback signal prior to step (d).