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Design and Implementation of an Audio Steganography System on FPGA

Ebrahimabadi, Mohammad | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42438 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Tabandeh, Mahmood
  7. Abstract:
  8. In recent years, along with development of technology and decrease in size of digital devices, copying and editing of digital multimedia products has become easier. Also, broadband technology caused simpler distribution of data. Considering above mentioned problems, we can use watermarking. Nowadays, watermarking has many applications such as secure transmission of data, owner identification, proof of ownership, authentication, broadcast monitoring etc. Watermarking is the process of hiding information in a secure host, in a way that it does not change the quality of signal. Watermarking is the science and art of hiding secret information in which neither the sender nor the receiver would be able to perceive the message. Generally, in watermarking, secret messages are not sent in original form, but are hided in multimedia file such as a photograph, audio, video signals etc. which in turn, new structure of data would be constructed to contain the hided information. In this research, a watermarking algorithm was designed and implemented on FPGA to hide a message in an audio signal. This algorithm is performed by modeling Human Auditory System and use of Discrete Wavelet Transform to implement the critical bands of hearing. In order to evaluate the system capabilities, we simulated the design in MATLAB and proved that the results obtained in reality are very close to the simulation outputs
  9. Keywords:
  10. Steganography ; Audio Watermarking ; Discrete Wavelet Transform (DWT) ; Matlab Software ; Field Programmable Gate Array (FPGA)

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