Patent ID: 9171549
Filing Date: 2015-10-27
Classification: G10L,H03G

Abstract:
1. A method, performed by one or more devices, for encoding audio signals, wherein the method comprises: receiving one or more main audio signals that represent a main audio program and receiving one or more associated audio signals that represent an associated audio program; encoding the one or more main audio signals to generate a main encoded audio signal and encoding the one or more associated audio signals to generate an associated encoded audio signal; generating audio mixing metadata in response to estimated loudness of the main audio program and estimated loudness of the associated audio program, wherein one or more audio signals to be decoded from the main encoded audio signal and one or more audio signals to be decoded from the associated audio signal are to be mixed according to the audio mixing metadata; wherein the audio mixing metadata specify an attenuation level for the one or more audio signals to be decoded from the main audio program prior to mixing; and assembling the main encoded audio signal, the associated encoded audio signal and the audio mixing metadata into an output encoded signal.