A modulation frequency-based method for perceptual tempo estimation from HE-AAC encoded music is proposed. The method is designed to work on the fully-decoded PCM-domain; the intermediate HE-AAC transform-domain after partial decoding; and directly on the HE-AAC compressed-domain using Spectral Band Replication (SBR) payload. This offers complexity scalable solutions. We demonstrate that SBR payload is an ideal proxy for tempo estimation directly from HE-AAC bit-streams without even decoding them. A perceptual tempo correction stage is proposed based on rhythmic features to correct for octave errors in every domain. Experimental results show that the proposed method significantly outperforms two commercially available systems, both in terms of accuracy and computational speed.

Authors: Hollosi, Danilo; Biswas, Arijit
Affiliations: Dolby Germany GmbH, Nürberg, Germany; Ilmenau University of Technology, Ilmenau, Germany(See document for exact affiliation information.)
AES Convention: 128 (May 2010) Paper Number: 8109
Publication Date: May 1, 2010
Subject: Audio Content Management—Audio Information Retrieval

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