Real ear measurement system using thin tube

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.

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.

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.

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.

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.

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.