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Processing method for localization of acoustic image for audio signals for the left and right ears

  • US 6,763,115 B1
  • Filed: 07/26/1999
  • Issued: 07/13/2004
  • Est. Priority Date: 07/30/1998
  • Status: Expired due to Fees
First Claim
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1. 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.

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