MATLAB: Input Variable storage audio file

Question

I would like to store the audio file in the "input_Signal so it can be modulated . any ideas ?

load gong;

[y,Fs]=audioread('gong.wav');

Input_Signal=

%

beginFreq = 1000 / (Fs/2);

endFreq = 4000 / (Fs/2);

[b,a] = butter(Order, [beginFreq, endFreq], 'bandpass');

% Bandpass

Signal = filter(b, a, Input_Signal);

Answer 1

Starting with:

v = load('gong.mat');
audiowrite('gong.wav',v.y,v.Fs);

I would do either:

[y,Fs]=audioread('gong.wav');
Input_Signal = y;

or:

[Input_Signal,Fs]=audioread('gong.wav');

Both of these should work.

With respect to the rest, see the buttord and filtfilt function documentation for some valuable hints on how to filter a signal correctly.

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