Error in my code

%Hi everyone,
%This is my code it is working fine but I'm getting error. Why? and how can I fix it? 
%One more question how can download the modified audio from MATLAB?

[y,Fs] = audioread('noisy2_group2.wav'); %read file from directory

[b,a] = butter(4, [0.015, 0.125], 'bandpass'); %Implement bandpass filter with specified frequency ranges

fOut = filter(b, a, y); %create the updated signal

sound(fOut,Fs) % play the sound signal and plot it

subplot(2,1,2), plot(y); %plot given signal

subplot(2,1,2), plot(fOut); 

wav write(fOut , 16000, 'fOut')    %Obtain the new signal

[Walter Roberson]

Perhaps you wanted wavwrite instead of wav write ?

Answer 1

[Alagu Sankar Esakkiappan]

Hi Abdullah,

I see that you're trying to filter an audio file and store the filtered audio signal in a new file. wavwrite is a legacy function which is removed from MATLAB 2015b. Instead, You may make use of audiowrite function as an alternate to write audio signal.

Following is a code reference for the same:

% Syntax for audiowrite is audiowrite(filename, audioSignal, bitRate)
audiowrite('new_signal.wav' , fOut, 16000);    %Obtain the new signal

Also in the Sample Code in question, both y and fOut are plotted in the same subplot. i.e subplot(2,1,2). Instead, You may try to use both upper and lower portions of the plot as follows:

subplot(2,1,1), plot(y);
subplot(2,1,2), plot(fOut); 

For more details on how to use sub plots, You may refer to subplot

[Abdullah Adam]

Thank you so much for your help