Audio processing apparatus with channel remapper and object renderer

An audio processing apparatus comprising:

• an input interface for receiving channel metadata, object metadata, multichannel audio signals, and object audio signals;
• an audio decoder for decoding the multichannel audio signals to produce decoded multichannel audio signals and for decoding the object audio signals to produce decoded object audio signals;
• a channel remapper for converting the decoded multichannel audio signals from a transmitted channel configuration to a desired reproduction configuration based on the channel metadata to produce converted multichannel audio signals;
• an object renderer for rendering the decoded object audio signals based on the object metadata to produce rendered object audio signals, the object metadata comprising a set of parameters, wherein the set of parameters includes spatial position and size;
• and
• an output interface for outputting the converted multichannel audio signals or rendered object audio signals.