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

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 polyn...

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Bibliographic Details
Published in:IEEE signal processing letters Vol. 31; pp. 1 - 5
Main Authors: Tsai, Morris C.-H., Wu, Hsiao-Chun, Huang, Scott C.-H., Chang, Shih Yu
Format: Journal Article
Language:English
Published: New York IEEE 01.01.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Audio mosaic
Codec
Discrete cosine transform
Discrete cosine transforms
Encryption
Kullback-Leibler divergence of discrete cosine transform (DCT-KLD)
Linear predictive coding
linear predictive coding (LPC)
Permutations
Polynomials
Receivers
Sociology
Statistics
Waveforms
ISSN:1070-9908, 1558-2361
Online Access:Get full text
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Summary: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.
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ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2024.3417328