Hi,
To read the audio data from a file and assign it to the 'input1' variable, you can use the 'audioread' function. This function takes the filename of the audio file as input and returns the audio data and the sample rate as output.
Here is how you can modify your code to read the audio data from a file and assign it to the 'input1' variable
function [output] = mainfreq(input1, sampleRate, input3)
if ischar(input1)
[input1, sampleRate] = audioread(input1);
end
This code checks if the 'input1' variable is a string (i.e., if it is the filename of an audio file). If it is a string, it reads the audio data from the file using audioread and assigns it to the input1 variable. The sample rate is also read from the file and assigned to the 'sampleRate' variable.
I hope this helps!
