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A Perceptual Approach to Reduce Musical Noise Using Critical Bands Tonality Coefficients and Masking Thresholds

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DOI: 10.4236/ijcns.2009.28085    5,194 Downloads   9,199 Views   Citations

ABSTRACT

Traditional noise reduction techniques have the drawback of generating an annoying musical noise. A new scheme for speech enhancement in high noise environment is developed by considering human auditory system masking characteristics. The new scheme considers the masking threshold of both noisy speech and the denoised one, to detect musical noise components. To make them inaudible, they are set under the noise masking threshold. The improved signal is subjected to extensive subjective and objective tests. It is ob-served that the musical noise is appreciably reduced even at very low signal to noise ratios.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

C. Rama Rao, M. Rama Murthy and K. Srinivasa Rao, "A Perceptual Approach to Reduce Musical Noise Using Critical Bands Tonality Coefficients and Masking Thresholds," International Journal of Communications, Network and System Sciences, Vol. 2 No. 8, 2009, pp. 742-745. doi: 10.4236/ijcns.2009.28085.

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