No peaks found when using findpeaks

clc;
clear all;

% Read the tone and listen to it once
[tones, Fs] = audioread('pin_9.wav');

Error using audioread>readaudio (line 167)
The filename specified was not found in the MATLAB path.

Error in audioread (line 160)
[y, Fs] = readaudio (filename, range, datatype);

audid = audiodevinfo(0, Fs, 16, 1);
%if audid ~= -1
    %p = audioplayer(tones, Fs, 16, audid);
   % play(p);
%end

% Visualize the spectrum
N = numel(tones);
t = (0:N-1) / Fs; 

% Iterate over each frequency bin and find peaks
for i = 1:size(tones, 2)
    tone = tones(:, i);
    % get the estimate of peak in time interval 1sec to 2sec of tone
    tones_1 = tones(t>1 & t<2);
n_1 = length(tones_1);
t_1 = (0:n_1-1)/Fs;
p = abs(fft(tones_1));
f = (0:n_1-1)*(Fs/n_1);
    figure
    title(['FFT spectrum for tone ', num2str(i)]);
    
    % Check if the input vector is non-empty before calling findpeaks
    if ~isempty(p)
        [pks, locs] = findpeaks(p);
        peak = f(locs);
    else
        disp('No peaks found.');
        peak = NaN;
    end
    
    plot(f, p);
    xlabel('Frequency (Hz)');
    ylabel('Magnitude');
    axis tight;
end

The result for this code is that it couldnt find any peaks. What do i do with this?

[Dyuman Joshi]

Please attach the audio file so we can run your code.

Also, have you tried plotting that signal and see if there are any peaks in it?

[Mathieu NOE]

hello

seems the file you're trying to open does not exist in the current path

look at your error message again :

Error using audioread>readaudio (line 167)

The filename specified was not found in the MATLAB path.

[Dyuman Joshi]

@Mathieu NOE, That's because I edited the problem description and ran that code in MATLAB Answers Live Editor.

[Mathieu NOE]

yes , of course !

we need the OP to share his wav file

[Mathieu NOE]

hello @ALIA

problem solved or you still need some help ?