Truong Phong Tuyen *

* Correspondence: Truong Phong Tuyen (email:

Main Article Content


In recent years, rapid development of multimedia applications leads to the requirement of huge data storage and high-speed data transfer capacity so that data compression emerges as an attractive topic. However, it is hard to compress sudden-changing signals, especially in high-speed and real-time processing. This paper proposes a hardware solution for real-time signal compression based on Daubechies wavelet transform (Db WT). The set of Db WT factors has been modified into integer number in order to be suitable for hardware implementation. The experiments were conducted on FPGA prototype implementation of real-time speech compression for evaluating the proposed approach.
Keywords: Altera DE2, DWT, FPGA, speech compression, Verilog HDL

Article Details


Abdul, M.M.A.N., Abdul, R.R., Azizah, I., Syed, A.R., 2003. Comparing Speech Compression Using Wavelets with Other Speech Compression Schemes. Student Conference on Research and Development (SCOReD) 2003 Proceedings, Putrajaya, Malaysia, pp. 55-58.

Altera Corporation, 2008. Using the SDRAM Memory on Altera’s DE2 Board with Verilog Design, accessed on 01 August 2015. Available from

Hussein, M.M., Nasser, A., Mahmoud, A.O., Alfandi, S.A, 2010. Multimedia Speech compression Techniques. 3rd IEEE International Conference on Computer Science and Information Technology (ICCSIT), Chengdu- China, 9-11 July, 2010, pp. 498-502.

Ingrid, D., Wim, S., 1998. Factoring Wavelet Transform into Lifting Steps. J. Fourier Anal. Appl., 4 (no. 3), pp. 247-269.

Integrated Circuit Solution Inc., 2000, IS42S8800 / IS42S8800L / IS42S16400 / IS4216400L 2(1) M Words x 8(16) Bits x 4 Banks (64-MBIT) synchronous dynamic RAM, Product Datasheet DR007-0A, pp. 1-68.

Ivan, K., 2003. The Daubechies D4 Wavelet Transform, accessed on 01 August 2015. Available from

James, S.W., 1999. A Primer on Wavelets and their Scientific Applications. Chapman and Hall/Crc, pp. 1-58.

Jing, P., Shitalben, C., Jay, M.B., 2008. Speech Compression FPGA Design By Using Different Discrete Wavelet Transform Schemes. Advances in Electrical and Electronics Engineering – IAENG Special Edition of the World Congress on Engineering and Computer Science, pp. 21-29.

Johnson, I.A., 1996. Discrete Wavelet Transform Techniques in Speech Processing. IEEE TENCON-Digital Signal Processing Applications, pp. 514-519.

Mehmet, R.C., 2008. Comparison of Wavelet and Short Time Fourier Transform Methods in the Analysis of EMG Signals. Journal of Medical Systems, Volume 34, Number 1, pp. 91-94.

Oonincx, P.J., Sleeman, R., Van, E.T., 2001. An Application of the DWT in Seismic Data Analysis. Wavelets in Signal and Image Analysis Computational Imaging and Vision Volume 19, pp. 479-500.

Polikar, R., 1999. The Wavelet Tutorial, accessed on 01 August 2015. Available from‎

Rajesh, G., Kumar, A., Ranjeet, K., 2001. Speech Compression using Different Transform Techniques. International Conference on Computer & Communication Technology (ICCCT), pp. 146-151.

Sun, L., Mkwawa, I.H., Jammeh, E., Ifeachor, E., 2013. Guide to Voice and Video over IP for Fixed and Mobile Networks. Computer Communications and Networks, Springer-Verlag London, pp. 17-51.

Wolfson Microelectronics Plc., 2004. WM8731/WM8731L portable Internet audio CODEC with headphone driver and programmable sample rates. Production datasheet, pp. 1-59.

Wonyong, C., Jongsoo, K., 1997. Speech and Image Compressions by DCT, Wavelet, and Wavelet Packet. International Conference on Information, Communication and Signal Processing (ICICS ’97), Singapore, 9-12 September 1997, pp. 1353-1357.