This can be done by taking the absolute value of the entire vector Y abs (Y) e. For the purpose of this function, we will go ahead and ignore the imaginary component of the signal. You will see that the vector elements will contain both real and imaginary components. The ft function will return the input signal transformed into the frequency domain. Use the fast fourier transform function in MATLAB (fft) to convert the audio signal into the frequency domain. Only use at the first 1000 samples of the audio vector c. Take in the audio vector and sampling frequency b. Write a function that will do the following: fftBar (soundVec, Fs) a. We can transform an audio signal from the time domain to the frequency domain by applying the Discrete Fourier Transform. While it is perhaps most intuitive ta consider signale in the time domain (Le plot amplitude vs time), the frequency domain can tell us interesting information about the energy of a given signal. compSoundVec - compress (soundVec, compression ratio) if you the compression ratio is 3, keep only every third element.) The function should return the compressed vector. The function should compress the file by removing vector elements based on the compression ratio. Create a function that takes in the sound vector and compression ratio. ![]() Play the new version of your sound vector. echoGain sets the amplitude of the echo signal (1-100% amplitude, 0.5-50% amplitude, 1.5-150% amplitude, etc) to be added. delaySamples tells you how many elements the offset needs to be. 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. Take in the audio vector and sampling frequency, delay and echo gain. sounVecEcho soundEcho (soundVec, Fs, delay, echoGain) Steps you should follow when designing your function: a. The function should return a vector containing the echoed sound. The function should take in the sound vector, sampling frequency, delay in seconds, and echo amplitude. Create a function that will add an echo effect to the audio signal. The audio vector and sampling frequency (Fs) from this module will be used for the remaining features of this program. ![]() This menu item will allow the user to enter exact name of audio file to be read into the program. Your program will need to have a Graphical User Interface (GUI) menu with the following functionality: Choose a File. For this assignment you will create an audio effects and analysis tool.
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