Misconstrued voice on SC-FDMA for secured comprehension - a cooperative influence of DWT and ECC

Audio encryption needs critical attention due to an insecure channel in the wireless medium. This paper presents the first- of- its- kind work addressing a Discrete Wavelet Transform (DWT) and Elliptic Curve Cryptography (ECC) influenced Single Carrier Frequency Division Multiple Access (SC-FDMA) for secure audio data communication. The Percent Residual Deviation, Perceptual Evaluation of Speech Quality histogram, correlation coefficient, Signal to Noise Ratio Test, Peak Signal to Noise Ratio Test, Log-likelihood ratio Test, and Key sensitivity test have been performed to analyse the sternness of the suggested algorithm. Also, the scheme resists brute force, statistical and differential attacks on the encrypted audio. The proposed algorithm offers an average NSCR and UACI of 99.9819 and 33.5938, respectively.