Patent ID: 6331164
Filing Date: 2001-12-18
Classification: A61B

Abstract:
A method employed by a hearing test device comprising:(a) transmitting a stimulus into an ear canal of a subject;(b) receiving a response to the stimulus from the ear canal;(c) splitting the response into a noise component and a signal component;(d) calculating a noise power from the noise component;(e) based on the calculated noise power, storing the noise component in one of a plurality of noise buffers and the signal component in a corresponding one of a plurality of signal buffers;(f) repeating (a) through (e) for a plurality of stimuli;(g) selecting a combination of the plurality of noise buffers having a lowest noise power;(h) calculating a signal power from a combination of signal buffers corresponding to the selected combination of noise buffers; and(i) calculating a signal to noise ratio from the signal power and the lowest noise power.