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Method for Quantitative Evaluation of Auditory Perception of Nonlinear Distortion

All loudspeakers, amplifiers, and transmission paths introduce various types of distortion into audio signals. While energy contribution of nonlinear distortion to the distortion signal is comparatively small it has a significant impact on the sound signal quality in terms of the auditory perception. Similar energy characteristics of a nonlinear distortion signal can affect the subjective quality evaluation to different extents. This makes it important to accurately extract the nonlinear distortion signal from a musical signal in the simultaneous presence of significant distortions of other types for the auditory perception relevant objective evaluation of nonlinear distortion. The paper offers a method for quantitative evaluation of a nonlinear distortion signal in terms of its audibility and a method for prediction of subjective ratings of signals with nonlinear distortion.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=19440

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