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Deconvolution of the spreading function by using a greedy algorithm

Deconvolution of the spreading function by using a greedy algorithm

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A greedy algorithm is proposed to conquer the deconvolution of the spreading function such that an ill-conditioned solution with negative energy can be avoided. This approach also generalises the concept of the perceptual entropy to the perceptual distortion rate function and designs an adaptive bit allocation scheme in an audio coder for delivering optimum performance.

Inspec keywords: audio coding; deconvolution; entropy

Other keywords: greedy algorithm; ill-conditioned solution; perceptual entropy; perceptual distortion rate function; deconvolution; adaptive bit allocation scheme; audio coder; spreading function

Subjects: Signal processing and detection; Codes

References

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      • Johnston, J.D.: `Estimation of perceptual entropy using noise masking criterion', Proc. ICASSP, 1988, 2, p. 2524–2527.
    4. 4)
      • Jean, : `Transparent spectrum coding for speech and audio signals,.dissertation', 1995, Ph.D, National Tsing Hua University, Taiwan.
    5. 5)
      • Brandenburg, K.: `Evaluation of quality for audio encoding at low bit rates', 82nd AES-Convention, 1987, Preprint 2433.
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      • R.N.J. Veldhuis . Bit rate in audio source coding. IEEE J. Sel. Areas Commun. , 1 , 86 - 96
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