$($d$)$ For the two sound clips that you picked above, pass them $($as inputs$)$ through the systems $h$ and h$2$ that you generated earlier, and listen to the output. Do they sound like what you expect? For each sound clip, plot the input and the output.

$($e$)$ The echos were not very clearly audible since the delays introduced by the earlier impulse responses were too small. To fix this, introduce a variable d$$lay whose initial value is set to $1.$ Create a new impulse response using the commands: $h3=[1$zeros$(1,$round$(delay***Fs)),0\mathrm{.}25$zeros$(1,10000)]$; Pass the sound clips through this new system. Confirm that the new system produces audible echoes, and plot the inputs and outputs.

What happens when you increase the delay parameter? What happens when you decrease it$?$