SOUND SPATIALIZATION AND ENVIRONMENT SIMULATION

摘要

PROBLEM TO BE SOLVED: To provide a method and device for processing an audio sound source so as to generate a four-dimensionally spatialized sound.SOLUTION: A virtual sound source may be moved in a three-dimensional space along a route for a specific time period so as to achieve four-dimensional sound localization. A binaural hearing filter corresponding to a desired space point is applied to a sound waveform so as to generate a spatialized waveform such that a sound seems to be emitted from a selected space point instead of a pair of speakers when reproduced from the speakers. The binaural hearing filter corresponding to the space point is simulated by interpolating the nearest binaural hearing filter selected out of a plurality of predefined binaural hearing filters. The sound waveform may be subjected to digital processing in mutually overlapping data blocks using short-time Fourier transformation. A localized sound may be further processed with respect to a Doppler shift and space simulation.