How to make two signals of same dimensions?

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Muhammad Abuzar 2023-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/1894510-how-to-make-two-signals-of-same-dimensions

回答： Sufiyan 2023-4-25

I am reading the two audio signals and i want to subtract them both but i face with an error that is that the matrix dimensions must be of the same length?How can i solve this?

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Answer 1

Sufiyan 2023-4-25

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https://ww2.mathworks.cn/matlabcentral/answers/1894510-how-to-make-two-signals-of-same-dimensions#answer_1222769

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Hi,

Here is an example to read the two audio signals and to subtract both.

% read in the two audio signals
[x1, fs1] = audioread('audio1.wav');
[x2, fs2] = audioread('audio2.wav');
% make the signals the same length
min_len = min(length(x1), length(x2));
%or you can use max length audio and add zeros to the other audio to make
%the signals of same length
x1 = x1(1:min_len);
x2 = x2(1:min_len);
% subtract the two signals
y = x1 - x2;
% write the result to a file
audiowrite('output.wav', y, fs1);