add test files

Freq_cochlea = cochlea(200, 7000, 4);

Freq_cochlea

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sound(sample);

% sound(yn);

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[sample, Freq_sample] = audioread('C_01_01.wav');

lpf = 20;

Freq_low = 200;

Freq_high = 7000;

% Set the number of bands N=4

N = 4;

yn = tone_vocoder(N, Freq_low, Freq_high, Freq_sample, lpf, sample.');

yn_fft = fftshift(fft(yn));

yn_abs = abs(yn_fft);

yn_sample = fftshift(fft(sample));

yn_sample = abs(yn_sample);

figure();

hold on

f = linspace(-Freq_sample/2, Freq_sample, length(sample))

subplot(2, 1, 1);

plot(f, yn_sample);

subplot(2, 1, 2);

plot(f, yn_abs);