desirable,we can use an alternative method,overlap-save method. In OSB Figure 8.21,we saw that in a circular convolution not all points are corrupted by time aliasing.The first(P-1)points of each segment are time aliased,but we have L-(P-1)= (L-P+1)points that are equal to the linear convolution.Therefore,as shown in OSB Figure 8.24,the portion of each output section in the region 0<n P-2 is discarded,and the remaining samples are saved to construct the final filtered output.desirable, we can use an alternative method, overlap-save method. In OSB Figure 8.21, we saw that in a circular convolution not all points are corrupted by time aliasing. The first (P − 1) points of each segment are time aliased, but we have L − (P − 1) = (L − P + 1) points that are equal to the linear convolution. Therefore, as shown in OSB Figure 8.24, the portion of each output section in the region 0 ≤ n ≤ P − 2 is discarded, and the remaining samples are saved to construct the final filtered output. 5