Why are the legends appearing twice?
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Giggs B.
el 15 de Mayo de 2021
Comentada: Giggs B.
el 16 de Mayo de 2021
Hi,
Please refer to the image. I don't know why my legends are appearing twice...can someone please help me? I tried a couple of things, but couldn't fix. I have been struggling with this for 3 days now. Thank you. (I am using MATLAB 2018).
close all;
%1
[y,fs]=audioread('crowd.mp3');
y_h=highpass(y,200,fs);
N=length(y);
time=N/fs;
t = linspace(0, time, N);
referenceLength=length(y);
fref=fs*(1:referenceLength)/referenceLength;
R=fft(y_h,referenceLength);
stor=R(1);
R(1)=0;
absR=abs(R);
plot(fref,absR,'DisplayName','crowd','color','b');
xlim([200 9000]);
ylim([0 200]);
xticks([200 1000 2000 3000 4000 5000 6000 7000 8000 9000]);
yticks([0 25 50 75 100 125 150 175 200]);
grid on;
xlabel('Frequency(Hz)');
ylabel('Amplitude');
title('Spectrum plot of different noises');
hold on;
%2
[y1,fs]=audioread('cafeteria.mp3');
y_h1=highpass(y1,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R1=fft(y_h1,referenceLength);
stor1=R1(1);
R1(1)=0;
absR1=abs(R1);
figure(1);
plot(fref,absR1,'DisplayName','Cafeteria','color','r');
hold on;
%3
[y2,fs]=audioread('shower.mp3');
y_h2=highpass(y2,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R2=fft(y_h2,referenceLength);
stor2=R2(1);
R2(1)=0;
absR2=abs(R2);
plot(fref,absR2,'DisplayName','Bathroom','color','g');
hold on;
%4 )
[y3,fs]=audioread('desk.mp3');
y_h3=highpass(y3,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R3=fft(y_h3,referenceLength);
stor3=R3(1);
R3(1)=0;
absR3=abs(R3);
plot(fref,absR3,'DisplayName','desk','color','y');
hold on;
%5
[y4,fs]=audioread('office.mp3');
y_h4=highpass(y4,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R4=fft(y_h4,referenceLength);
stor4=R4(1);
R4(1)=0;
absR4=abs(R4);
plot(fref,absR4,'DisplayName','office','color','c');
hold on;
%6
[y5,fs]=audioread('hallway.mp3');
y_h5=highpass(y5,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R5=fft(y_h5,referenceLength);
stor5=R5(1);
R5(1)=0;
absR5=abs(R5);
plot(fref,absR5,'DisplayName','hallway','color','m');
hold on;
%7
[y6,fs]=audioread('ICU.mp3');
y_h6=highpass(y6,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R6=fft(y_h6,referenceLength);
stor6=R6(1);
R6(1)=0;
absR6=abs(R6);
plot(fref,absR6,'DisplayName','ICU','color','[0.63 0.078 0.18]');
hold on;
%8
[y7,fs]=audioread('music.mp3');
y_h7=highpass(y7,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R7=fft(y_h7,referenceLength);
stor7=R7(1);
R7(1)=0;
absR7=abs(R7);
plot(fref,absR7,'DisplayName','Music','color','[0.49 0.18 0.56]');
hold on;
%9
[y8,fs]=audioread('room.mp3');
y_h8=highpass(y8,200,fs);
fref=fs*(1:referenceLength)/referenceLength;
R8=fft(y_h8,referenceLength);
stor8=R8(1);
R8(1)=0;
absR8=abs(R8);
plot(fref,absR8,'DisplayName','room','color','[0.92 0.69 0.12]');
hold on;
legend;
0 comentarios
Respuesta aceptada
Walter Roberson
el 16 de Mayo de 2021
Your code is assuming that the audio only has one channel, but instead it has two channels in each file.
5 comentarios
Walter Roberson
el 16 de Mayo de 2021
crowd_h = plot(fref,absR,'DisplayName','crowd','color','b');
%...
caf_h = plot(fref,absR1,'DisplayName','Cafeteria','color','r');
%...
legend([crowd_h(1), caf_h(1)], 'show')
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