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In this paper, an algorithm has been proposed to provide authentication of audio signal through concealment of a selective segment of its harmonic components and hiding the selective harmonic components in such a manner that will not affect over its audible quality. The replica of inner harmonic components will use for hidden signature in wavelet domain. Sampling the hidden harmonic components with the help of amplitude coding for generating lower magnitude values is the first phase of proposed technique followed by fabrication of authenticating code by embedding the lower magnitude values with selected coefficients of song signal generated via wavelet transform [symmetrization mode]. The embedded hidden self component of song signal is used to detect and identify the original song from similar available songs with the help of comparing its hidden code and respective similar inner part. A comparative study has been made with similar existing techniques and experimental results are also supported with mathematical formula based on Microsoft WAVE (".wav") stereo sound file.

Generating Audio Signal Authentication through Secret Embedded Self Harmonic Component (GASASH)