Abstract
Abstract Digital communications and information security has become one of the key issues to send data, there are two techniques available to achieve this goal: Encryption And concealment of information, the goal of this research is the application of technical system coverage within the audio file and the way is to change the cell bilateral least important (Low Bit Encoding) file that has been chosen here is the file named WAV used as a cover for the transfer of data, using three algorithms for this purpose, followed by a Testing Statistical and so on methods of measuring the minimum square error, in addition to measuring the proportion of noise to the original signal, was to illustrate the results within the practical side of using the MATLAB version of 10, tests showed that the concealment algorithm using the secret key to give the best results
