In this paper we have emphasized on alternative uses of Cellular Automata (CA) in Digital Signal Processing (DSP). The corollary of the distinction is centered on the parallel nature for both of the processors. For digital signal processing, parallelism has been focused with reference to hardware parallelism as well as software parallelism. Major issues for DSP implementation i.e. sampling, superposition, decomposition, Fourier transformation using CA have been covered in this paper [1]. Those discussed results ensure that CA is much efficient to be used for DSP Implementation instead of DSP processors.