Error using load: Number of columns on line 2 of ASCII file must be the same as previous lines.

Hello. I am trying to model a transceivers functionality and capability in MATLAB. I have recorded a signal and modulated the signal to 'send off' for fellow classmates to demodulate and discover. Of course, I am attempting to demodulate the signal first to make sure everything works. However, I am continuously running into the error code mentioned in the title when I try to load the "Modulated.wav" file. Can anyone please help me fix this issue?

% Demodulated Signal

clc
clear all;

Fc = 500; % Carrier Frequency in Hz
Fs = 12000; % Sampling Frequency in Samples/Sec

load Modulated.wav

Answer 1

[Steven Lord]

The load function is intended for use in loading a MAT-file or a regularly formatted text file. Use audioread to read in a sound file.

[Brian Gregory]

Okay I have replaced it as you said. Now it is reading an error code "File could not be read due to an unexpected error. Reason: Error in MAT5 file. Bad block structure." for the audioread. Any ideas?

% Demodulated Signal

clc
close all;
clear all;

Fc = 500; % Carrier Frequency in Hz
Fs = 12000; % Sampling Frequency in Samples/Sec

audioread('Modulated.wav')

[Steven Lord]

How was Modulated.wav created? Is this a file you attempted to create using save, something you created using a different function, something you downloaded, etc.?

[Brian Gregory]

It is a file I created using save

[Steven Lord]

Okay, in that case the extension should probably be .mat or you should read it in using load with the -mat option to tell MATLAB that even though its extension is not .mat it is in fact a MAT-file.

[Brian Gregory]

Ah okay, I was trying to save it as a .wav file. It worked when I saved it as a .mat file. Thank you!