Efficient drc profile transmission

A method for decoding an encoded audio signal;

• wherein the encoded audio signal comprises a sequence of frames;
• wherein the encoded audio signal is indicative of a plurality of different dynamic range control, referred to as DRC, profiles for a corresponding plurality of different rendering modes;
• wherein different subsets of DRC profiles from the plurality of DRC profiles are comprised within different frames of the sequence of frames, such that two or more frames of the sequence of frames jointly comprise the plurality of DRC profiles;
• the method comprising
• determining a first rendering mode from the plurality of different rendering modes;
• determining one or more DRC profiles from a subset of DRC profiles comprised within a current frame of the sequence of frames;
• determining whether at least one of the one or more DRC profiles is applicable to the first rendering mode;
• selecting a default DRC profile as a current DRC profile, if none of the one or more DRC profiles is applicable to the first rendering mode;
• wherein definition data of the default DRC profile is known at a decoder for decoding the encoded audio signal;
• and
• decoding the current frame using the current DRC profile.

An encoder for generating an encoded audio signal;

• wherein the encoded audio signal comprises a sequence of frames;
• wherein the encoded audio signal is indicative of a plurality of different dynamic range control, referred to as DRC, profiles for a corresponding plurality of different rendering modes;
• wherein the encoder is configured to
• insert different subsets of DRC profiles from the plurality of DRC profiles into different frames of the sequence of frames, such that two or more frames of the sequence of frames jointly comprise the plurality of DRC profiles.

A decoder for decoding an encoded audio signal;

• wherein the encoded audio signal comprises a sequence of frames;
• wherein the encoded audio signal is indicative of a plurality of different dynamic range control, referred to as DRC, profiles for a corresponding plurality of different rendering modes;
• wherein different subsets of DRC profiles from the plurality of DRC profiles are comprised within different frames of the sequence of frames, such that two or more frames of the sequence of frames jointly comprise the plurality of DRC profiles;
• wherein the decoder is configured to
• determine a first rendering mode from the plurality of different rendering modes;
• determine one or more DRC profiles from a subset of DRC profiles comprised within a current frame of the sequence of frames;
• determine whether at least one of the one or more DRC profiles is applicable to the first rendering mode;
• select a default DRC profile as a current DRC profile, if none of the one or more DRC profiles is applicable to the first rendering mode;
• wherein definition data of the default DRC profile is known at the decoder;
• and
• decode the current frame using the current DRC profile.