I need to make MUSIC on matlab

Question

Annie 2013-11-3

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评论： Erdal Yegenaga 2020-11-1

So I have to make a song on matlab and then set up sine waves that correspond to the notes on the scale. The notes are AGGABCFG. can someone help me with this?

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Answer 1

Azzi Abdelmalek 2013-11-3

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编辑：Azzi Abdelmalek 2013-11-3

在 MATLAB Online 中打开

Look at these links

http://users.rowan.edu/~shreek/networks1/music.html

http://www.seventhstring.com/resources/notefrequencies.html

For your case

notes={'C' 'C#' 'D' 'Eb' 'E' 'F' 'F#' 'G' 'G#' 'A' 'Bb' 'B'}
freq=[261.6  277.2  293.7  311.1  329.6  349.2...
  370.0  392.0    415.3  440.0  466.2  493.9]
song={'A' 'G' 'G' 'A' 'B' 'C' 'F' 'G'}  % your song
a=[]
for k=1:numel(song)
   note_value=0:0.000125:0.5 % You can change the note duration
  a=[a sin(2*pi* freq(strcmp(notes,song{k}))*note_value)];
end
sound(a)

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Azzi Abdelmalek 2013-11-4

[Annie commented]

thank you for you help!

Haripriya K 2020-6-15

在 MATLAB Online 中打开

hello can u say at what times these individual notes begin in the song?

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Answer 2

Dan Po 2016-10-17

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在 MATLAB Online 中打开

OMG I LOVE THIS POST

clear
tic
notes={'C' 'C#' 'D' 'Eb' 'E' 'F' 'F#' 'G' 'G#' 'A' 'Bb' 'B'};
freq=[261.6  277.2  293.7  311.1  329.6  349.2...
  370.0  392.0    415.3  440.0  466.2  493.9];
song={'A' 'G' 'G' 'A' 'B' 'C' 'F' 'G'} ; % your song
a=[];
for i=2:70
  for k=1:numel(song);
      note_value=0:i*0.0001:0.5 ;% You can change the note duration
      a=[a sin(2*pi* freq(strcmp(notes,song{k}))*note_value)];
  end
end
sound(a);
toc

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Answer 3

Erdal Yegenaga 2020-11-1

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I am doing research for my graduation project, but I could not reach enough code information.I want to assign music notes to computer keys for digital synthesizer. Can you write this code with adsr enveloping please?

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John D'Errico 2020-11-1

编辑：John D'Errico 2020-11-1

This is not an answer to anything, but a direct request for someone to provide code to you to do your task. If this is research, will you give direct credit to the person who did the work for you when you hand in your project? Will their name be listed on front of your project as a direct contributor? Or, would you happily hand in someone else's efforts as your own?

Erdal Yegenaga 2020-11-1

在 MATLAB Online 中打开

You r right. I asked my problem wrong way. Can you help me write to assign computer keys to play music notes?

clear ;
close all;
fs=8500; 
t=0:0.000117:3;
note_do= sin(2*pi*261.6*t);
note_re= sin(2*pi*293.7*t);
note_mi= sin(2*pi*329.6*t);
note_fa= sin(2*pi*349.2*t);
note_sol= sin(2*pi*392*t);
note_la= sin(2*pi*440*t);
note_si= sin(2*pi*493.9*t);
note_do1= sin(2*pi*523.5*t);
y=note_do;
A = linspace(0, 0.9, (length(y)*0.10));     %rise 35% of signal
D = linspace(0.9, 0.7,(length(y)*0.05));    %drop of 5% of signal
S = linspace(0.7, 0.7,(length(y)*0.40));    %delay of 40% of signal
R = linspace(0.7, 0,(length(y)*0.20));      %drop of 25% of signal
ADSR = [A D S R] ;
x = zeros(size(y));
x(1:length(ADSR)) = ADSR;
tone=y.* x;
sound(tone,fs);