Patent ID: 6668204
Filing Date: 2003-12-23
Classification: H04R

Abstract:
An audio system having a testing mode and a listening mode comprising:a digital audio signal source comprising: a means for supplying audio information; and a user interface; a headphone or a hearing aid comprising left and right earphones each comprising: a means for downloading said audio information from said digital audio signal source to said earphone; a memory device for storing coefficient information wherein said coefficient information is obtained from a user through said user interface in response to testing of the hearing characteristics of said user in said testing mode; a signal processor transforming said audio information from digital into analog signals and using said coefficient information to correct the amplitude of different frequency spectra of analog signals for said user in said listening mode thereby resulting in corrected analog signals; an amplifier to increase the amplitude of said corrected left and right side analog audio signals; and a transducer for converting said corrected analog signals into sound waves.