Patent ID: 9628933
Date: 2017-04-18
CPC Classifications: H04S

Claim:
1. A method for rendering L 1 channel-based input audio signals to L 2 loudspeaker channels, where L 1 is different from L 2 , the method comprising steps of determining a mix type of the L performing a first delay and gain compensation on the L mixing the delay and gain compensated input audio signal for L clipping the remixed audio signal, wherein a clipped remixed audio signal for L performing a second delay and gain compensation on the clipped remixed audio signal for L wherein the mixing uses an energy preserving mixing matrix G that is obtained by obtaining a first mixing matrix Ĝ from virtual source directions performing a singular value decomposition on the first mixing matrix Ĝ according to Ĝ=U S V processing the singularity matrix S, wherein a quantized singularity matrix Ŝ is obtained with diagonal elements that are above a threshold set to one and diagonal elements that are below a threshold set to zero; determining a number determining a scaling factor a according to  and calculating the energy preserving mixing matrix G according to G=a U Ŝ V