Patent ID: 6178247
Filing Date: 2001-01-23
Classification: H04S

Abstract:
A headphone apparatus for use with first and second ears of a user, the headphone apparatus comprising:a first direct sound generating means for generating a first direct sound audio signal corresponding to a sound which travels from an imaginary sound source and directly reaches the first ear by delaying an input audio signal;a second direct sound generating means for generating a second direct sound audio signal corresponding to a sound which travels from the imaginary sound source and directly reaches the second ear by delaying the input audio signal;a first reflection sound generating means for generating a first reflection sound audio signal corresponding to a sound which travels from the imaginary sound source, reaches a shoulder of the user and thereafter reaches the first ear through reflection by delaying the input audio signal;a second reflection sound generating means for generating a second reflection sound audio signal corresponding to a sound which travels from the imaginary sound source, reaches a shoulder of the user and thereafter reaches the second ear through reflection by delaying the input audio signal;a first adding means for adding the first direct sound audio signal to the first reflection sound audio signal, thereby generating a first combined sound audio signal;a second adding means for adding the second direct sound audio signal to the second reflection sound audio signal, thereby generating a second combined sound audio signal; andheadphones operable to reproduce the first combined sound audio signal from said first adding means and the second combined sound audio signal from the second adding means independently at the first and second ears, respectively.