Operations on sequence Discrete-Time Signals and Systems--Digital Signal Processing 3.Scaling &a{x(n)}={ax(n) 4.Shifting y(n)={x(n-k)} m=n-k;y=xi 5.folding &y(n)={(-n)} y=fliplr(x);n=-fliplr(n); 上游充通大Operations on sequence Discrete-Time Signals and Systems —— Digital Signal Processing 3. Scaling  a{x(n)}={ax(n)} 5. folding  y(n)={x(n-k)}  m=n-k; y=x; 4. Shifting  y(n)={x(-n)}  y=fliplr(x); n=-fliplr(n);