How to plot separately fft plot and spectrogram?

Hello.

I am trying to plot FFT plot and Spectrogram, however, when I run the code, Spectrogram plot overlap FFT plot.

Also I would like to know how do I know if frequency domain plot has the right scale.

Here is the code:

clc;

close all;

clear;

workspace;

[y,Fs] = audioread("Saludos_Sistemas_Senales.m4a"); % Saludos_Sistemas_Senales.m4a, is an audio file I recorded

soundsc(y, Fs);

N = length(y);

dt = 1/Fs;

t = dt*(0:N-1);

subplot(2,2,1);

plot(t,y); % Plot the audio file in time domain.

X=fft(y);

X_abs=abs(X/N);

X_abs=X_abs(1:N/2+1);

f=Fs*(0:N/2)/N;

subplot(2,2,2);

plot(f,X_abs)

y1 = y(:,1);

MaxValue = max(y);

minValue = min(y);

meanvalue = mean(y);

stdvalue = std(y);

spectrogram(y1, 1024, 512, 1024, Fs, 'yaxis')

Answer 1

[Cris LaPierre]

Add the command figure before you create your second plot to force a new figure window.