Patent ID: 9619199
Date: 2017-04-11
CPC Classifications: G06F,G10L,H03G,H04S

Claim:
1. A method for dynamic range control (DRC) of audio signals, the method comprising: receiving, by an audio decoder operating in a specific playback environment different from a reference channel configuration, an audio signal for the reference channel configuration, the audio signal including audio sample data and encoder-generated DRC metadata, the encoder-generated DRC metadata comprising a plurality of sets of DRC gains for a plurality of playback environments, the plurality of sets of DRC gains comprising one or more respective sets of DRC gains for each playback environment in the plurality of playback environments; selecting one or more sets of DRC gains, based on the specific playback environment, from among the plurality of sets of DRC gains for the plurality of playback environments, the one or more sets of DRC gains relating to the specific playback environment; applying the one or more sets of DRC gains as a part of overall gains applied to the audio sample data to the audio sample data to generate output DRC audio data.