Patent ID: 9474473
Filing Date: 2016-10-25
CPC Classification: A61B,H04R

Claim Text:
1. A method of compensating for sound pressure measurement errors caused by ear canal resonance occurring in an occluded ear canal, comprising: a. measuring the sound pressure of a sound source in an ear simulator; b. measuring the sound pressure of the sound source in the ear canal; c. carrying out both sound pressure measurements over a frequency range of the sound source; d. calculating over the measured frequency range a real-ear-to-coupler difference (RECD) measurement using the sound pressure measurements; e. identifying a frequency notch in the calculated RECD measurement associated with ear canal resonance; and f. calculating a corrected RECD measurement including calculating a correction to the RECD measurement using the identified frequency notch to compensate for errors caused by ear canal resonance and combining the RECD measurement calculation and the correction calculation to obtain the corrected RECD measurement.