Patent ID: 9602947
Date: 2017-03-21
CPC Classifications: H04S

Claim:
1. An audio signal processing apparatus which performs binaural filtering on an input audio signal, the apparatus comprising: a direction renderer configured to localize a direction of a sound source of the input audio signal; and a distance renderer configured to reflect an effect in accordance with a distance between the sound source of the input audio signal and a listener, wherein the distance renderer further configured to: obtain information on a distance (an ipsilateral distance) and an incident angle (an ipsilateral incident angle) of the sound source with respect to an ipsilateral ear of the listener and information on a distance (a contralateral distance) and an incident angle (a contralateral incident angle) of the sound source with respect to a contralateral ear of the listener, determine an ipsilateral distance filter based on at least one of the obtained information of the ipsilateral distance and the ipsilateral incident angle, determine a contralateral distance filter based on at least one of the obtained information of the contralateral distance and contralateral incident angle, and filter the input audio signal with the determined ipsilateral distance filer and contralateral distance filter, respectively, to generate an ipsilateral output signal and a contralateral output signal.