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Novel Audio Mosaic Using LPC-Coefficient and Excitation-Codeword Permutations | IEEE Journals & Magazine | IEEE Xplore

Novel Audio Mosaic Using LPC-Coefficient and Excitation-Codeword Permutations


Abstract:

In this letter, a novel light-weight audio mosaic scheme using permutations of linear predictive coding (LPC) coefficients as LPC has been widely adopted in many audio co...Show More

Abstract:

In this letter, a novel light-weight audio mosaic scheme using permutations of linear predictive coding (LPC) coefficients as LPC has been widely adopted in many audio codecs (coder-encoders) nowadays. We establish the theoretical secrecy analysis with respect to the degree of the original LPC polynomial and the minimum-phase population of permuted LPC polynomials. The mosaic (destructuring) performance in terms of DCT-KLD (Kullback-Leibler divergence of discrete cosine transform) is also evaluated through simulations. In comparison with the existing audio-mosaic method using waveform permutations, our proposed new audio-mosaic scheme using LPC-coefficient permutations can achieve a much better mosaic performance (a much higher DCT-KLD) subject to the same key size.
Published in: IEEE Signal Processing Letters ( Volume: 31)
Page(s): 1690 - 1694
Date of Publication: 21 June 2024

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