MATLAB: How to read an audio file in matlab and analyze this file graphically

.mat file.mp4audio filematlab datamp3video file

Assalam-o-Alaikum sir!

I want to analyze the audio file graphically by using matlab. The first thing is that I've to load it in matlab then plot it. After all that, I also have to save this as matlab data (.mat file).

I don't know how I can do that. Please help me.

Best Answer

Use the audioread (link) function to read the file, then the save (link) function to save it as a ‘.mat’ file.

[y,Fs] = audioread(filename);
save('my_sound_file.mat', 'y', 'Fs');

See the plot, linspace (to create your time vector) and related functions to process your sound data.

Related Solutions

MATLAB: Speech_dft_8kHz.wav

Start with the audioread (link), then sound (link) functions.

To plot it, create a time vector from the ‘Fs’ (sampling frequency) value and the length of your file ‘y’ in the audioread output.

I leave the rest to you.

MATLAB: How to display graphically

not sure this is what you had in mind ...

%Environment
envSize=4;
figure; 
x=-envSize:0.1:envSize;
y=.5*sin(x);
plot(y,x,'lineWidth',10)
axis([-envSize envSize -envSize envSize]);
hold on;
%Input 
left=[0 0 1 1 1 1 1];
right= [1 1 0 0 0 0 0 0];
% number of ppl 
nL=sum(left);
nR=sum(right);
%random position for ppl
maxX=envSize-1;
minX=2*max(y);
maxY=envSize-1;
minY=-(envSize-1);
pL = [-(minX + (maxX-minX) .* rand(nL,1)), (minY + (maxY-minY) .* rand(nL,1))]
pR = [(minX + (maxX-minX) .* rand(nR,1)) , (minY + (maxY-minY) .* rand(nR,1))]
% plot
scatter(pL(:,1),pL(:,2),'filled','SizeData',200)
alpha(.5)
scatter(pR(:,1),pR(:,2),'filled','SizeData',200)
alpha(.5)

the output looks like this

Best Answer

Related Solutions

MATLAB: Speech_dft_8kHz.wav

MATLAB: How to display graphically

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