The Effect of Compression on Audio Steganography

Abstract

Steganography is the hiding for important and different structure of information in other medium without discovered method by unauthorized. In this research, a system have been proposed to enhance data hiding scheme using multilevel audio steganography and lossless compression. Multi-level steganography have been applied to increase the security of the system, in first level Enhanced Random Least Significant Bits (LSB) technique has been used and in second level Discrete Wavelet Transform (DWT) has been used. Lossless data compression technique Huffman and LZW between first and second level of steganography were applied. Comparative analysis of proposed method has been done on basis of parameters like PSNR, MSE. The results showed that the compression algorithms have no significant impact on the process of steganography. Also, results demonstrated that the Huffman compression algorithm highly efficient than LZW comparison algorithm. Comparison was based on the PSNR values that were obtained, as an example, the value of PSNR is equal to 81.95 dB when using Huffman to compress first audio file and the value is 77.10 dB when using LZW algorithm for audio compression.