A Room Compensation Method by Modification of Reverberant Audio Objects

Abstract

Conventional channel-based room equalisation can reduce overall colouration caused by the room response, however it cannot separately correct the colouration caused by the late and early parts of the response, or consider the reverberance in the source signal. A room compensation method is developed here for a source signal in which the dry source sound and the associated target reverberant response are encoded separately, which is possible in an object-based audio framework. The target response is modified using the reproduction room response. Subject to some conditions the combined response approximates the target, with accurate early and late equalisations, reverberant balance, and decay timing. Stochastic assumptions are used to simplify the processing, enabling efficient real-time processing of the encoded audio.

Perceptually Motivated Spatial Audio Scene Description and Rendering for 6-DoF Immersive Music Experiences

“…7) which automatically performs, in the time-frequency-energy domain, a deconvolution accounting for the acoustic response of a loudspeaker reproduction environment [63], [64]. This compensation is based on principles similar to those underlying the object-based "room-in-room" acoustic response correction method developed in [65], [66].…”