THE COEFFICIENTS SELECTION AND THE IMPLEMENTATION OF THE T MATRIX IN THE ASYNCHRONOUS TIME DOMAIN SPEECH SCRAMBLING SYSTEM

摘要

Recently,the condition for recovering the original speech correctly in the asynchronous time domain speech scrambling system was proposed by Lin-shan Lee et.al.On the basis of this condition,this paper gives the derivation of the coefficients relation between time domain scrambling matrix T and descrambling matrix T-1.For the implementation of the system in real time,a new scheme for T matrix implementation is proposed,which can reduce the amount of calculation greatly.