Patent ID: 8462970
Filing Date: 2013-06-11
Classification: G10L,H04S

Abstract:
1. A method for ordering spectral parameters relating to respective spectral bands of Q ambisonic components to be encoded originating from an audio scene comprising N signals, with N>1, said method comprising the following steps, performed for at least two different rates: a) quantification of said Q ambisonic components with a rate among said at least two different rates to obtain quantified ambisonic components, calculation of the respective influence of at least some spectral parameters, taken from a set of spectral parameters to be ordered, on at least one generalized Gerzon angle vector defined as a function of energy and velocity vectors of acoustic pressures generated by a sound reproduction system according to Gerzon's criteria said generalized Gerzon angle vector being calculated as a function of a reverse ambisonic transformation applied to said quantified ambisonic components, comparison of respective generalized Gerzon angle vectors calculated with each of said at least two different rates; and b) allocation of an order of precedence to at least one spectral parameter as a function of the influence calculated for said spectral parameter compared to the other calculated influences.