Digital Signal Processing Digital Signal Processor(DSP)or Digital Filter x(] DT System yIn digital signal digital signal Discrete-Time(DT) Linear System yn=∑列nmm m∈D DT Linear and Time-Invariant(LTI) System yn=∑列n-mm=小*xn m∈D hn, m=hn-mDigital Signal Processing digital signal x n[ ] y n[ ] digital signal DT System • Discrete-Time (DT) Linear System • DT Linear and Time-Invariant (LTI) System [ ] [ , ] [ ] m y n h n m x m  =  [ ] [ ] [ ] [ ] [ ] m y n h n m x m h n x n  = − =   h n m h n m [ , ] [ ] = − Digital Signal Processor (DSP) or Digital Filter