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Journal Article

Interband Mutual Information in Blind Audio Bandwidth Extension

Authors: Chung, Li-Jing; Sen, Deep; Epps, Julien

Journal of the Audio Engineering Society · Volume 58 · Issue 11 · pp. 952–965 · November 2010

Abstract

Band-limited audio can be enhanced by artificially generating the missing spectral information even when there is no knowledge of the missing spectrum. The proposed algorithm analyzes multiple bands of the existing audio for their mutual information in order to estimate the most salient features of the missing components: gain, spectral envelope, and harmonicity. Objective and subjective tests show that the proposed algorithm is superior to existing schemes but with its harmonicity estimation module requiring high-computational cost due to high-order linear prediction filters.

Details

Publication
Journal of the Audio Engineering Society
Volume
58
Issue
11
Pages
952–965
Publication date
November 6, 2010
Affiliation
School of Electrical Engineering and University of New South Wales, Sydney, NSW, Australia (See document for exact affiliation information.)
Type
Journal Article