Dolby ATMOS master compressor/limiter

An audio processing system for dynamic range adjustment, comprising:

• at least two renderers, each of the at least two renderers configured to obtain a plurality of spatial audio objects and render the spatial audio objects to a respective different rendered presentation, each rendered presentation comprising at least one presentation audio channel forming a set of rendered presentation audio channels;
• a signal level analysis unit, configured to determine signal level data associated with each presentation audio channel in said set of presentation audio channels, wherein the signal level data represents the signal level for a plurality of time segments of the presentation audio channel, and
• a gain calculator, configured to:
• obtain a threshold value,
• select a presentation audio channel, wherein the selected presentation audio channel is a presentation audio channel of the set of presentation audio channels which is associated with a highest or a lowest signal level representation for the time segment compared to the other presentation audio channels of said set of presentation audio channels,
• determine for each time segment a gain, the gain being based on the threshold value and the signal level representation of the selected presentation audio channel, and
• a gain applicator configured to apply the gain of each time segment to corresponding time segments of each spatial audio object to form dynamic range adjusted spatial audio objects.