Patent ID: 6763115
Filing Date: 2004-07-13
Classification: H04S

Abstract:
A processing method for localization of a sound image for audio signals for the left and right ears comprising, when a sound generated from an appropriate sound source is processed as an audio signal in the order of inputs on time series, the steps of:transforming the inputted audio signal to audio signals for the left and right ears of a person; dividing each of the audio signals into frequency bands selected from the group comprising: a low/medium range and high range; a low range and medium/high range; and a low range, medium range and high range, wherein the low range band is a frequency band of less than aHz having a half wave length corresponding to a diameter of a head of a person, the high range band is a frequency band of more than bHz having a half wave length corresponding to a diameter of a concha of a person, and the medium range band is a frequency band between aHz and bHz; and subjecting the divided audio signal of each band to a processing for controlling an element for a feeling of the direction of the sound source to be applied on a person's auditory sense and an element for a feeling of the distance up to the sound source and outputting the processed audio signal.