To Do: FIR Delay effect

Section: Filtering

Data

Any sound files (you can use the sounds used for the guitar tuner)

Goal

The FIR filter for delay effect can be implement thanks to the following input-output equation ($e[t]$ is the input, $s[t]$ is the output): $$ s[t] = e[t] + \alpha e[t-D] $$ $\alpha\geq 0$ is the attenuation factor, and $D$ the time delay.

Determine the impulse response of the filter
Provide the Frequency response of the filter
Implement the delay effect in the time domain