With the adoption of ITU-R BS.1770 and the creation of numerous loudness recommendations, measuring and controlling the loudness of audio for broadcast is now a standard practice for legacy (5.1 and stereo) content. With new immersive and personalized audio content, the measurement and controlling of loudness is still in its infancy. While ITU-R BS.1770 has recently been revised to support an arbitrary number of audio channels. However dynamic object-based audio measurement is not explicitly covered in this revision, though the revision can be used to measured the rendered object-based audio. This paper summarizes the results of subjective loudness matching tests that were conducted using rendered dynamic object-based audio to verify the revision of ITU-R BS.1770.
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