Its a matlab probelm and i need help with problem 1, 2, and 3.

Sound file is named tm.wav

I. Cllouse Plle, This mhu item will llow the user to enter exact name of audio file to a be read into the program. The file has to be in wav format. The audio vector and sampling frequency (Fs) from this module will be used for the remaining features of this program. 2. Play the original audio vector. Echo effect.Create a function that will add an echo effect to the audio signal. The function should take in the sound vector, sampling frequency, delay in seconds, and echo amplitude. The function should return a vector containing the echoed sound. 3. sounVecEcho soundEcho (soundvec, Fs, delay, echoGain) Steps you should follow when designing your function: a. Take in the audio vector and sampling frequency, delay and echo gain. b. Convert the delay in seconds to number of samples delaySamples Fs delay Figure out a way to add a delayed version of the signal vector to the original sound vector. delaySamples tells you how many elements the offset needs to be. echoGain sets the amplitude of the echo signal (1-100% amplitude, 0.5-50% amplitude, 1.5-150% amplitude, etc.) to be added c