Ear canal microphone

• US 5,987,146 A
• Filed: 04/03/1997
• Issued: 11/16/1999
• Est. Priority Date: 04/03/1997
• Status: Expired due to Term

• Current Assignee: GN Resound A/S (GN Store Nord A/S)
• Original Assignee: ReSound Corp. (GN Store Nord A/S)
• Inventors: Pluvinage, Vincent, Taenzer, Jon C., Puthuff, Steven H.
• Primary Examiner(s): LE, HUYEN D
• Application Number:
  US08/832,507
• Time in Patent Office: 957 Days
• Field of Search: 381/322, 381/328, 381/330, 381/327, 381/324, 381/60, 381/326, 381/381, 381/382, 381/380, 73/585, 128/746
• US Class Current: 381/328
• CPC Class Codes: H04R 2460/09 Non-occlusive ear tips, i.e. leaving the ear canal open, for both custom and non-custom tips H04R2460/11 takes precedence
• CPC Class Codes: H04R 25/652 Ear tips; Ear moulds hybrid ear moulds or post-processing thereof for their customisation H04R25/659
• CPC Class Codes: H04R 25/656 Non-customized, universal ear tips, i.e. ear tips which are not specifically adapted to the size or shape of the ear or ear canal

Abstract

An open ear canal hearing aid system is disclosed which comprises a plurality of ear canal tubes sized for positioning in an ear canal of a user so that the ear canal is at least partially open for directly receiving ambient sounds. The open ear canal hearing aid system further comprises a sound processor for amplifying ambient sounds received through one of the ear canal tubes within a predetermined frequency range and to produce processed sounds and for supplying the processed sounds to the second ear canal tube. According to other embodiments of the present invention, the speaker and/or microphone can be located in the ear canal at the end of the ear canal tubes. In these embodiments, the speaker and/or microphone are electrically connected to the sound processor by wires in the ear canal tubes.

Claims

1. An open ear canal hearing aid system, comprising:

a first ear canal tube sized for positioning in an ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said first ear canal tube has a first end in said ear canal with an opening for receiving said ambient sounds and a second end connected to an input of a microphone;

sound processing means for processing the ambient sound signals produced by said microphone within a predetermined amplitude and frequency range to produce processed sounds; and

a second ear canal tube sized for positioning in the ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said second ear canal tube transports processed sounds into the ear canal.

2. An open ear canal hearing aid system according to claim 1, wherein the predetermined amplitude and frequency range is selected for a predetermined level of hearing loss.

3. An open ear canal hearing aid system according to claim 1, wherein said ear canal tubes have an inside diameter of less than 0.03 inches and an outside diameter of less than 0.05 inches.

4. An open ear canal hearing aid system according to claim 1, wherein said second ear canal tube comprises a barb at a tip securing said second ear canal tube in the ear canal of the user.

5. An open ear canal hearing aid system according to claim 1, further comprising:

means for reducing feedback due to sound emanated from the ear canal.

6. An open ear canal hearing aid system according to claim 1, wherein said sound processor includes a multiband compressor system for dividing the ambient sound signals into plural frequency bands and for providing different sound processing to each band.

7. An open ear canal hearing aid system, comprising:

a first ear canal tube sized for positioning in an ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said first ear canal tube has a first end in said ear canal with an opening for receiving said ambient sounds and a second end connected to an input of a microphone;

sound processing means for processing the ambient sound signals produced by said microphone within a predetermined amplitude and frequency range to produce processed sounds; and

a second ear canal tube sized for positioning in the ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said ear canal tube contains a speaker located in said ear canal for broadcasting processed sounds.

8. An open ear canal hearing aid system according to claim 7, wherein the predetermined amplitude and frequency range is selected for a predetermined level of hearing loss.

9. An open ear canal hearing aid system according to claim 7, wherein said first ear canal tube has an inside diameter of less than 0.03 inches and an outside diameter of less than 0.05 inches.

10. An open ear canal hearing aid system according to claim 7, wherein said second ear canal tube comprises a barb at a tip securing said second ear canal tube in the ear canal of the user.

11. An open ear canal hearing aid system according to claim 7, further comprising:

means for reducing feedback due to sound emanated from the ear canal.

12. An open ear canal hearing aid system according to claim 7, wherein said sound processor includes a multiband compressor system for dividing the ambient sounds into plural frequency bands and for providing different sound processing to each band.

13. An open ear canal hearing aid system, comprising:

a first ear canal tube sized for positioning in an ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said first ear canal tube has a microphone located at one end of the tube in the ear canal for receiving ambient sounds and for producing sound signals;

sound processing means located outside of said ear canal for processing the sound signals produced by the microphone within a predetermined amplitude and frequency range to produce processed sounds, wherein said sound signals are transmitted from the microphone to the sound processing means by wires in said first ear canal tube; and

a second ear canal tube sized for positioning in the ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said second ear canal tube transports processed sounds into the ear canal.

14. An open ear canal hearing aid system according to claim 13, wherein the predetermined amplitude and frequency range is selected for a predetermined level of hearing loss.

15. An open ear canal hearing aid system according to claim 13, wherein said second ear canal tube has an inside diameter of less than 0.03 inches and an outside diameter of less than 0.05 inches.

16. An open ear canal hearing aid system according to claim 13, wherein said second ear canal tube comprises a barb at a tip securing said second ear canal tube in the ear canal of the user.

17. An open ear canal hearing aid system according to claim 13, further comprising:

means for reducing feedback due to sound emanated from the ear canal.

18. An open ear canal hearing aid system according to claim 13, wherein said sound processor includes a multiband compressor system for dividing the ambient sounds into plural frequency bands and for providing different sound processing to each band.

19. An open ear canal hearing aid system, comprising:

a first ear canal tube sized for positioning in an ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said first ear canal tube has a microphone located at the end of the tube in the ear canal for receiving ambient sounds and for producing sound signals;

sound processing means for processing the sound signals produced by the microphone within a predetermined amplitude and frequency range to produce processed sounds, wherein said sound signals are transmitted from the microphone to the sound processing means by wires in said first ear canal tube; and

a second ear canal tube sized for positioning in the ear canal so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said second ear canal tube has a speaker located at one end of the tube located in the ear canal for broadcasting processed sounds into the ear canal.

20. An open ear canal hearing aid system according to claim 19, wherein the predetermined amplitude and frequency range is selected for a predetermined level of hearing loss.

21. An open ear canal hearing aid system according to claim 19, wherein said ear canal tubes have an inside diameter of less than 0.03 inches and an outside diameter of less than 0.05 inches.

22. An open ear canal hearing aid system according to claim 19, wherein said second ear canal tube comprises a barb at a tip securing said second ear canal tube in the ear canal of the user.

23. An open ear canal hearing aid system according to claim 19, further comprising:

means for reducing feedback due to sound emanated from the ear canal.

24. An open ear canal hearing aid system according to claim 19, wherein said sound processor includes a multiband compressor system for dividing the ambient sounds into plural frequency bands and for providing different sound processing to each band.

25. An open ear canal communications earpiece, comprising:

a microphone means for detecting ambient sounds in an ear canal;

sound processing means for processing the ambient sound signals produced by said microphone within a predetermined amplitude and frequency range to produce processed signals; and

speaker means for broadcasting processed signals into said ear canal,

wherein said communications earpiece is positioned in said ear of a user so that the ear canal is at least partially open for directly receiving ambient sounds.

26. An open ear canal communications earpiece according to claim 25, wherein the predetermined amplitude and frequency range is selected for a predetermined level of hearing loss.

27. An open ear canal communications earpiece according to claim 25, further comprising:

means for reducing feedback due to sound emanated from the ear canal.

28. An open ear canal communications earpiece according to claim 25, wherein said sound processor includes a multiband compressor system for dividing the ambient sounds into plural frequency bands and for providing different sound processing to each band.

29. An open ear canal communications earpiece according to claim 25, wherein said open ear communications earpiece acts as a hearing aid system, and wherein said sound processing means does not amplify low frequency sound, the system relying on the open ear canal transmission of low frequency ambient sounds.

30. An open ear canal communications earpiece, comprising:

a microphone means for detecting ambient sounds in an ear canal;

sound processing means for processing the ambient sound signals produced by said microphone within a predetermined amplitude and frequency range to produce processed signals; and

speaker means for broadcasting processed signals into said ear canal,

wherein said communications earpiece is positioned in said ear of a user so that the ear canal is at least partially open for directly receiving ambient sounds, wherein said sound processing means does not amplify low frequency sound, the system relying on the open ear canal transmission of low frequency ambient sounds.