The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Sep. 27, 2000
Rion Co., Ltd., Tokyo, JP;
Abstract
A method of estimating the shape of an auditory filter by finding a coefficient p of a roex (p, r) filter used as a model of the shape of the auditory filter, comprises the steps of determining the threshold masking level N based on a tone S which adds the given value x to the threshold of hearing T of a subject in a frequency f, generating a tone S′ which deducts the given value a from the tone S, generating a masker M of a center frequency f of a notch, notch width g and level N , transmitting to the subject an inspection sound which superposes the masker M on the tone S′ by selsctively varying the notch width g, determining the notch width g at which the subject can perceive the tone S′ to be the minimum notch width g of the subject, calculating the coefficient p from the minimum notch width g and the given value a, and estimating the shape of the auditory filter from the coefficient p and the given value x corresponding to the coefficient r.