Audio signal decoder, audio signal encoder, method for providing an upmix signal representation, method for providing a downmix signal representation, computer program and bitstream using a common inter-object-correlation parameter value

A method for providing a bitstream representation on the basis of a plurality of audio object signals, the method comprising:

• providing a downmix signal on the basis of the audio object signals and in dependence on downmix parameters describing contributions of the audio object signals to the one or more channels of the downmix signal;
• and
• providing a common inter-object-correlation bitstream parameter value associated with a plurality of pairs of related audio object signals;
• and
• providing a bitstream signaling parameter indicating that the common inter-object-correlation bitstream parameter value is provided instead of a plurality of individual inter-object-correlation bitstream parameter values;
• and
• providing an object-relationship information describing whether two audio objects are related to each other,
• providing a bitstream comprising a representation of the downmix signal, a representation of the common inter-object-correlation bitstream parameter value and the bitstream signaling parameter,
• wherein the method is performed using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer.

A non-transitory digital storage medium having stored thereon a computer program for performing, when executed by a computer, a method for providing a bitstream representation on the basis of a plurality of audio object signals, the method comprising:

• providing a downmix signal on the basis of the audio object signals and in dependence on downmix parameters describing contributions of the audio object signals to the one or more channels of the downmix signal;
• and
• providing a common inter-object-correlation bitstream parameter value associated with a plurality of pairs of related audio object signals;
• and
• providing a bitstream signaling parameter indicating that the common inter-object-correlation bitstream parameter value is provided instead of a plurality of individual inter-object-correlation bitstream parameter values;
• and
• providing an object-relationship information describing whether two audio objects are related to each other,
• providing a bitstream comprising a representation of the downmix signal, a representation of the common inter-object-correlation bitstream parameter value and the bitstream signaling parameter,
• when the computer program runs on a computer.