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Providing security to audio songs for maintaining its intellectual propertyright (IPR) is one of chanllenging fields in commercial world especially increative industry. In this paper, an effective approach has been incorporatedto fabricate authentication of audio song through application of message digestmethod with alternation of coefficients of harmonics in multi-stages of higherfrequency domain without affecting its audible quality. Decomposing constituentfrequency components of song signal using Fourier transform with generatingsecret code via applying message digest followed by alternating coefficients ofspecific harmonics in multi-stages generates a secret code and this unique codeis utilized to detect the originality of the song. A comparative study has beenmade with similar existing techniques and experimental results are alsosupported with mathematical formula based on Microsoft WAVE (".wav") stereosound file.

Fabrication of Message Digest to Authenticate Audio Signals with Alternation of Coefficients of Harmonics in Multi-Stages (MDAC)