**5. Conclusion**

The performance of the Wavelet Transform based speech scrambling system was examined on actual " **Arabic Speech Signals** " , and the results showed that there was no residual intelligibility in the scrambled speech signal. The descrambled speech signal at receiver was exactly identical to the original applied speech waveform. Hence it provides the high security scrambled speech signal and the reconstructed signal was perfect . Some interesting points can be mentioned here:

