Method to estimate the sound pressure level at eardrum using measurements away from the eardrum
First Claim
1. A method for measuring an estimated sound pressure level at a tympanic membrane in an ear canal of an ear of a wearer of a hearing assistance device using measurements away from the tympanic membrane, the method comprising:
- placing a sound sampling apparatus in the ear canal at a first position;
placing a sound emitter in the ear canal at a second position;
generating sound with the sound emitter and receiving sound with the sound sampling apparatus to measure an amplitude response of the ear canal; and
determining the estimated sound pressure level at the tympanic membrane using measurements of sound from the sound sampling apparatus including measurements of a null frequency and a null Q at the first position and the measured amplitude response.
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Accused Products
Abstract
A method for measuring sound pressure at a tympanic membrane of a wearer'"'"'s ear including a high frequency range with a hearing assistance device. The hearing assistance device comprises a processor connected to a sensor in the ear canal. The device provides a measure of the sound pressure level at the tympanic membrane of the wearer using a null frequency and a null Q measured at a distant position away from the tympanic membrane. The method does not require a precise knowledge of the ear canal, nor does it require an elaborate calibration step. In various embodiments, the present approach works at low and high frequencies.
51 Citations
22 Claims
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1. A method for measuring an estimated sound pressure level at a tympanic membrane in an ear canal of an ear of a wearer of a hearing assistance device using measurements away from the tympanic membrane, the method comprising:
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placing a sound sampling apparatus in the ear canal at a first position; placing a sound emitter in the ear canal at a second position; generating sound with the sound emitter and receiving sound with the sound sampling apparatus to measure an amplitude response of the ear canal; and determining the estimated sound pressure level at the tympanic membrane using measurements of sound from the sound sampling apparatus including measurements of a null frequency and a null Q at the first position and the measured amplitude response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification