A method for measuring a frequency selectivity and apparatus and method for estimating filter shapes of the hearing-impaired person by means of a frequency increase - measuring method

摘要

A method for estimating the form of a hearing-impaired person filter by finding a coefficient p of a filter roex (p, r) with the coefficients p and r, which as a model for the shape of the filter is used, which method comprises the steps of:Determining a railroad ties masking level n_x based on a clay s, from the addition of a given value x and a hearing threshold t of a subject is formed at a frequency f;Generating a sound s ′ by a pulling off of a given value a from the clay s, wherein x & a applies;Generating a masking device m with a notched impact width g of including the frequency f and with the ties masking level n_x;Transmitting a under no sound, wherein the masking device m the clay s ′ is superimposed, to the subject;Measuring a minimum impact elasticity width g_{x - a} for the subject during changing of the notched impact width g;Estimating an upper limit value g_{a maximum} the notched impact width g in accordance with the following..