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A joint encryption-compression codec for speech signals using the ITU-T G.711 standard and chaotic map

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Abstract

We propose to incorporate encryption procedure into the lossy compression of voice data PCM(Pulse Code Modulation) based on the A-law approximation quantization. The proposed codec CPCM (Chaotic Pulse Code Modulaion) will join the encryption to the compression of the voice data. This scheme provides the same compression ratio given by the PCM codec, but with an unintelligible content. Comparisons with many used schemes have been made to highlight the proposed method in terms of security and rapidity. CPCM codec can be a better alternative to Compress-then-encrypt classical methods which is a time and resource consuming and non suitable for real-time multimedia secure transmission.

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Notes

  1. Am. English female: https://sites.google.com/site/houcemeddinehermassi/AM_Female%201.wav?attredirects=0

  2. Am. English female PCM: https://sites.google.com/site/houcemeddinehermassi/AM-female1PCM.wav?attredirects=0

  3. Am. English female CPCM: https://sites.google.com/site/houcemeddinehermassi/AM_female1CPCM.wav?attredirects=0

  4. Chinese male: https://sites.google.com/site/houcemeddinehermassi/CH_male1.wav?attredirects=0

  5. Chinese male PCM: https://sites.google.com/site/houcemeddinehermassi/CH_male1PCM.wav?attredirects=0

  6. Chinese male CPCM: https://sites.google.com/site/houcemeddinehermassi/CH_male1CPCM.wav?attredirects=0

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Authors and Affiliations

  1. École Nationale d’Ingénieurs de Tunis ENIT, Tunis, Tunisia

    Houcemeddine Hermassi, Mimoun Hamdi, Rhouma Rhouma & Safya Mdimegh Belghith

Authors
  1. Houcemeddine Hermassi
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  2. Mimoun Hamdi
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  3. Rhouma Rhouma
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  4. Safya Mdimegh Belghith
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Correspondence to Houcemeddine Hermassi.

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Hermassi, H., Hamdi, M., Rhouma, R. et al. A joint encryption-compression codec for speech signals using the ITU-T G.711 standard and chaotic map. Multimed Tools Appl 76, 1177–1200 (2017). https://doi.org/10.1007/s11042-015-3030-6

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  • DOI: https://doi.org/10.1007/s11042-015-3030-6

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