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Information hiding in proposed 10.6 kbps CS-ACELP based speech codec using Quantization Index Modulation

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Abstract

This paper aims to propose information hiding with the variant like steganography and watermarking in proposed 10.6 kbps Conjugate Structure-Algebraic Code Excited Linear Prediction (CS-ACELP) speech codec. Proposed work makes use of Dither Modulation-Quantization Index Modulation technique to incorporate steganography or watermarking for information hiding in the excitation codebook code vector of proposed 10.6 kbps CS-ACELP based speech codec. Codebook partition and label assignment approach is explored in proposed coder in order to create room of 10 bits per frame for steganographic data transmission. Joint source coding and data hiding approach is adopted for steganographic or watermarked data transmission. Performance of the proposed approach is evaluated with different objective and subjective parameters in terms of tables and graphs. Information hiding capacity is demonstrated with different parameters like the watermark to signal ratio, hiding capacity and embedding capacity in terms of percentage. Moreover, the results of subjective and objective parameters of the proposed algorithm are analysed by computing population mean of 99% confidence interval to prove the consistency of it.

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Correspondence to Nikunj Tahilramani.

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Tahilramani, N., Bhatt, N. Information hiding in proposed 10.6 kbps CS-ACELP based speech codec using Quantization Index Modulation. Int J Speech Technol 25, 219–230 (2022). https://doi.org/10.1007/s10772-021-09949-2

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