Steganography is a technique to improve the security of
data, which is by inserting messages or confidential information
using a medium called the host or carrier or cover. A wide variety of
digital media can be used as a host, among others audio, image,
video, text, header, IP datagram, and so forth. For audio
steganography, the embedded audio is called stego-audio.
Steganography can be cracked by using steganalysis. By
exploiting the weaknesses of each steganography method. Many
steganography method has been developed to increase its
performance.
This Thesis proposed audio steganography scheme called
MELSB which is modified version of ELSB. This method using
Modified Bit Selection Rule to increase SNR and robustness of
stego-audio. SNR result after applying MELSB scheme is increased.
MELSB scheme also increase robustness of stego-audio. MELSB
still work fine until amplification level 1.07. MELSB also work fine
against noise addition better than ELSB and LSB. It give BER and
CER with value 0 at SNR 33 dB. MELSB work fine in real-time
condition on 802.11n WLAN if there is no transcoding and noise
addition between sender’s and recipient’s computer