Enhanced Multichannel Audio Resynthesis Through Residual Processing and Features Alignment

Multichannel audio refers to a widespread technology that enables audio rendering through multiple channels. Audio reproduction with multiple channels has the advantage of recreating the acoustic scene with unprecedented fidelity and of immersing the listener in an acoustic environment that is virtually indistinguishable from reality. However, one of the greatest challenges of multichannel audio is its high storage and transmission requirements especially since accurate rendering through as many possible channels is the main purpose. Audio resynthesis addresses this issue by enabling us to recreate a set of channels at the receiver end by transmitting only one source channel. We propose a new, enhanced, approach on multichannel audio resynthesis which involves a novel residual processing technique and a features alignment method that significantly increase the resynthesis accuracy. Our results show that this latest method leads to higher audio quality and allows for the robust treatment of any type of multichannel signal set.