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The inventions and innovations in the multimedia communication
have revolutionized the infotainment world. With the advancements in multimedia
, there is a growing demand to use the image, audio, video and text ingredients
for information protection. In the field of steganography, the cover to carry
over the secret information has been an image in many of the reported works
due to high payload carrying capacity. However audio steganography on hardware
platform provides the user an option to use multicarrier steganography on common
chip. Here we propose a method of steganography which has been implemented on
Cyclone II FPGA EP2C20F484C7 which houses an architecture with LSB substitution
of Huffman encoded secret message on select parts of digitized audio signal.
The experimental results show that a SNR of 127.7 dB has been obtained for 100
bits payload with embedding process done on every 2000th memory location of
16-bit digitized audio signal stored in External SRAM.
