Modified LSB on Audio Steganography using WAV Format

Steganography is a data security technique that used as an effort to secure data. Various techniques and media tested in the steganography technique. One of the classic methods that still today is the Least Significant Bit (LSB) method. As one of the classical methods, this method tested in many technical modification developments and tested on various types of cover media. Various LSB methods that have done always show changes in quality. Therefore, this study conducted tests to try to increase the capacity of the steganography and test the quality degradation that occurred using LSB and some modified LSB methods. The evaluations include calculating the PSNR value, drawing the visual spectrogram, and calculating the BER value. The PSNR evaluation shows that the larger the cover media size used, the smaller the risk of quality degradation, and the bigger the secret message, the greater the noise that will be generated. The evaluation of BER shows that any technique depends on the match between the cover media bits and the secret message bits. Evaluation of the calculation of the maximum steganographic capacity shows that the larger the size of the cover media, the greater the capacity of the secret message that the cover media has.