The evaluation of twelve models of loudness perception is presented. One of the loudness models is based on a novel algorithm, and another is based on a combination of two known measurement techniques. The remaining models are all implementations of common or standardized loudness algorithms. The ability of each model to predict or measure the subjective loudness of speech and music segments is evaluated. The reference loudness is derived from two listening experiments using the speech and music segments as stimuli. Different statistical measures are employed in the evaluation of the models, so that both the absolute performance of the models and the performance relative to the between-listener disagreement are measured.
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