Perceptual synthesis of auditory scenes

Abstract

An auditory scene is synthesized by applying two or more different sets of one or more spatial parameters (e.g., an inter-ear level difference (ILD), inter-ear time difference (ITD), and/or head-related transfer function (HRTF)) to two or more different frequency bands of a combined audio signal, where each different frequency band is treated as if it corresponded to a single audio source in the auditory scene. In one embodiment, the combined audio signal corresponds to the combination of two or more different source signals, where each different frequency band corresponds to a region of the combined audio signal in which one of the source signals dominates the others. In this embodiment, the different sets of spatial parameters are applied to synthesize an auditory scene comprising the different source signals.

1 . A method for synthesizing an auditory scene, comprising the steps of: 
 (a) dividing an input audio signal into a plurality of different frequency bands; and    (b) applying two or more different sets of one or more spatial parameters to two or more of the different frequency bands in the input audio signal to generate two or more synthesized audio signals of the auditory scene, wherein for each of the two or more different frequency bands, the corresponding set of one or more spatial parameters is applied to the input audio signal as if the input audio signal corresponded to a single audio source in the auditory scene.