Basically, a steganography indicates two of the principal requirements such the messages andthe carrier file. Besides, it should have three aspects: capacity, imperceptibility, and robustness. Thispaper will show how to enhance the capacity of two types of carrier files for embedding message. Byusing Least Significant Bit method and modifying the four last bits of carrier files, bitmap and wav filescould show the increasing of message size to be inserted to the carrier than only modifying the last 1 bitof carrier files. Particularly bitmap file which still had good quality visual showed PSNR value in31.5460 dB, but wav file was only 3.8929 dB.
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