There are numerous applications where it is desirable to have an objective measure of the perceived loudness of typical audio signals. For example, in broadcast applications an objective measure would allow the perceived loudness of the various program materials to be equalized. In the present study several potential objective loudness measures are examined. The objective measures are evaluated in their ability to predict the results of a database derived from a series of formal subjective tests. Possible metrics for rating the performance of the objective loudness measures are considered.
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https://aes2.org/publications/elibrary-page/?id=12382
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