Description

1. Use the conv() function find the convolution sum of the following signals, and verify the results with your manual calculation.

2. Write your own Matlab function, y = convsum(x, h), to calculate the convolution sum between two vectors, x and h, based on the definition of convolution sum. The inputs are two vectors, x and h, and the output vector y is the convolution sum between x and y. The result should be the same as the Matlab built-in function conv( ). (Use “help function to learn how to write a Matlab function). Repeat Problem 1 with your own convsum() function.

3. Delay and Echo. The following example showed how to load a wav file and play it with Matlab.