Tonality Detection based on Spectrum Energy in Perceptual Audio Coder 


Vol. 29,  No. 6, pp. 770-776, Jun.  2004


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  Abstract

The goal of perceptual audio coder is to reduce redundancy and irrelevancy of audio signal based on the concept of masking. Several studies on masking effect reveal that the masking threshold varies as a function of the noise-like or tone-like nature of audio signals. Therefore, tonality of audio signal influences significantly the quality and efficiency of perceptual audio coder. In this paper, we propose a new effective algorithm for tonality measure using spectrum energy. Since the proposed algorithm consists of a few transcendental functions and simple operations, it has lower complexity than MPEG psychoacoustie model-II. The proposed algorithm was tested 、 .vith some audio signals, and DSP implementation showed that the proposed algorithm could be implemented with 3 MIPS. These results illustrate the efficiency of proposed algorithm in both performance and complexity.

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  Cite this article

[IEEE Style]

K. Lee, K. Yeon, Y. Park, D. H. Youn, "Tonality Detection based on Spectrum Energy in Perceptual Audio Coder," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 6, pp. 770-776, 2004. DOI: .

[ACM Style]

Keun-Sup Lee, Kyu-Chel Yeon, Young-Cheol Park, and Dae Hee Youn. 2004. Tonality Detection based on Spectrum Energy in Perceptual Audio Coder. The Journal of Korean Institute of Communications and Information Sciences, 29, 6, (2004), 770-776. DOI: .

[KICS Style]

Keun-Sup Lee, Kyu-Chel Yeon, Young-Cheol Park, Dae Hee Youn, "Tonality Detection based on Spectrum Energy in Perceptual Audio Coder," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 6, pp. 770-776, 6. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880