Real ear measurement system using thin tube

1. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response;

storing the RECD in memory of the hearing assistance device; and

transforming the samples into a frequency domain, and checking for bad capture for each sample.

2. The method of claim 1 , further comprising transforming the samples into a frequency domain, and generating an average on the samples.

3. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response;

storing the RECD in memory of the hearing assistance device; and

transforming the samples into a frequency domain, and checking for body movements.

4. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response;

storing the RECD in memory of the hearing assistance device;

transforming the samples into a frequency domain;

checking for temporal variations for each sample while in the frequency domain to find clean samples; and

generating an average using only clean samples.

5. The method of claim 4 , further comprising:

transforming the samples into a frequency domain, and

checking each sample for body movements or bad capture.

6. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

producing a real-ear coupler difference RECD using the plurality of samples and a coupler response;

storing the RECD in memory of the hearing assistance device; and

randomly triggering capture of samples.

7. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response;

storing the RECD in memory of the hearing assistance device;

generating a periodic, tonal complex signal;

transforming the tonal complex signal from a time domain into a frequency domain;

applying gains to the tonal complex signal based on pre-stored coupler response data; and

transforming the tonal complex signal with the applied gains from the frequency domain to the time domain for presentation to the receiver.

8. The method of claim 7 , further comprising calculating the gain, wherein calculating the gain includes:

using the microphone and the sound tube to capture the sound in the ear canal;

transforming a signal representative of the captured sound from the time domain to the frequency domain: and

determining the gain for the transformed signal representative of the captured sound to achieve a desired level.

9. The method of claim 8 , wherein calculating the gain further includes monitoring the transformed signal representative of the captured sound against limits related to user comfort and output performance.

10. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to randomly capture a plurality of samples from the sound in the ear canal for each desired frequency;

transforming the samples into a frequency domain;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response; and

storing the RECD in memory of the hearing assistance device.

11. The method of claim 10 , further comprising checking each sample for bad capture and body movements.

12. The method of claim 10 , further generating an average on the samples.

13. The method of claim 10 , further comprising finding clean samples and generating an average using only clean samples.

14. The method of claim 10 , further comprising:

generating a periodic, tonal complex signal;

transforming the tonal complex signal from a time domain into a frequency domain; and

applying gains to the tonal complex signal based on pre-stored coupler response data; and

transforming the tonal complex signal with the applied gains from the frequency domain to the time domain for presentation to the receiver.

15. The method of claim 14 , further comprising calculating the gain, wherein calculating the gain includes:

using the microphone and the sound tube to capture the sound in the ear canal;

transforming a signal representative of the captured sound from the time domain to the frequency domain: and

determining the gain for the transformed signal representative of the captured sound to achieve a desired level.

16. The method of claim 15 , wherein calculating the gain further includes monitoring the transformed signal representative of the captured sound against limits related to user comfort and output performance.

17. A method for performing a Real Ear Measurement (REM) for a user's canal using a hearing assistance apparatus with a receiver, a microphone, and a sound tube, comprising:

presenting a periodic signal to the receiver to provide a calibrated sound in the user's ear canal;

using the microphone and the sound tube to capture a plurality of samples from the sound in the ear canal for each desired frequency;

transforming the samples into a frequency domain;

producing a real-ear coupler difference (RECD) using the plurality of samples and a coupler response; and

storing the RECD in memory of the hearing assistance device;

calculating gains;

generating a periodic, tonal complex signal;

transforming the tonal complex signal from a time domain into a frequency domain; and

applying the gains to the tonal complex signal based on the stored RECD; and

transforming the tonal complex signal with the applied gains from the frequency domain to the time domain for presentation to the receiver.

18. The method of claim 17 , wherein calculating gains includes:

using the microphone and the sound tube to capture the sound in the ear canal;

transforming a signal representative of the captured sound from the time domain to the frequency domain;

determining the gains to achieve desired level for the transformed signals; and

monitoring the transformed signals against limits related to user comfort and output performance.

19. The method of claim 17 , further comprising checking each sample for bad capture and body movements.

20. The method of claim 17 , further comprising finding clean samples and generating an average using only clean samples.