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how can i make a music using matlab??

9 次查看（过去 30 天）
Christian Prinncess Usman
编辑： Image Analyst 2023-3-4
my instructor want us to make a music using MATLAB.

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Image Analyst
Image Analyst 2014-7-8
Attached is a demo, make_wav_file.m, on how to make a sound.
You can start it off with this:
NET.addAssembly('System.Speech');
obj = System.Speech.Synthesis.SpeechSynthesizer;
obj.Volume = 100;
Speak(obj,'Now you will listen to my music');
Good luck.

更多回答（3 个）

Chiemela Victor Amaechi
编辑：DGM 2023-3-4
SYNTAX FOR MUSIC IN MATLAB:
clear;
a=sin(2*pi*440*(0:0.000125:0.5));
b=sin(2*pi*493.88*(0:0.000125:0.5));
cs=sin(2*pi*554.37*(0:0.000125:0.5));
d=sin(2*pi*587.33*(0:0.000125:0.5));
e=sin(2*pi*659.26*(0:0.000125:0.5));
fs=sin(2*pi*739.99*(0:0.000125:0.5));
line1=[a,a,e,e,fs,fs,e,e,];
line2=[d,d,cs,cs,b,b,a,a,];
line3=[e,e,d,d,cs,cs,b,b];
song=[line1,line2,line3,line3,line1,line2];
%wavwrite(song,'song.wav');
audiowrite(song,'song.wav');
============================================
SAMPLE SOUND
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)
============================================
MUSIC FOR A GAME
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
=============================================
CHILDREN MUSIC FOR ALPHABETS ...A,B,C,D,E,F,G,H,I,J,K,
notecreate = @(frq,dur) sin(2*pi* [1:dur]/8192 * (440*2.^((frq-1)/12)));
notename = {'A' 'A#' 'B' 'C' 'C#' 'D' 'D#' 'E' 'F' 'F#' 'G' 'G#'};
song = {'A' 'A' 'E' 'E' 'F#' 'F#' 'E' 'E' 'D' 'D' 'C#' 'C#' 'B' 'B' 'A' 'A'};
for k1 = 1:length(song)
idx = strcmp(song(k1), notename);
songidx(k1) = find(idx);
end
dur = 0.3*8192;
songnote = [];
for k1 = 1:length(songidx)
songnote = [songnote; [notecreate(songidx(k1),dur) zeros(1,75)]'];
end
soundsc(songnote, 8192)
%The frequencies of notes A, B, C#, D, E and F# are 440 Hz, 493.88 Hz,
%554.37 Hz, 587.33 Hz, 659.26 Hz and 739.99 Hz, respectively.
%how to write a MATLAB file to produce a piece of music with notes in the
%following order : A, A, E, E, F#, F#, E, E, D, D, C#, C#, B, B, A, A.
%Assign the duration of each note as 0.3s.
Alfonso Nieto-Castanon
编辑：Image Analyst 2023-3-4
Ran in:
Or you could go all modern and synthesize your own:
fs=16384; % sampling frequency
T=10; % 10-second song
time=0:1/fs:T; % time samples
y=sum(cell2mat(arrayfun(@(f,t)exp(-100*(time-t).^2).*sin(cumsum(f*exp(-(time-t).^2))/fs),kron([1 .7492],randi([400,4000],1,100)),repmat(1+rand(1,100).^4*(T-2),1,2)+kron([0 .5],ones(1,100)),'uni',0)'),1); % go crazy here
plot(y, 'b-');
xlabel('Time');
ylabel('Signal Value');
grid on;
soundsc(y,fs); % Play the sound
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Trevor Secure
Trevor Secure 2020-6-18
sorry to necro post, but i'm brand new to matlab and whatever that sound was that your code produced is amazing.
Image Analyst
Image Analyst 2020-6-18
编辑：Image Analyst 2023-3-4
Here it is:
fs = 16384; % sampling frequency
T = 10; % 10-second song
timeVector = 0 : 1/fs : T; % time samples
y = sum(cell2mat(arrayfun(@(f,t)exp(-100*(timeVector-t).^2).*sin(cumsum(f*exp(-(timeVector-t).^2))/fs),kron([1 .7492],randi([400,4000],1,100)),repmat(1+rand(1,100).^4*(T-2),1,2)+kron([0 .5],ones(1,100)),'uni',0)'),1); % go crazy here
% Plot the waveform:
plot(timeVector, y, 'b-');
grid on;
fontSize = 15;
xlabel('Time', 'FontSize', fontSize);
ylabel('Signal Amplitude', 'FontSize', fontSize);
title('Audio Signal Amplitude', 'FontSize', fontSize);
g = gcf;
g.WindowState = 'maximized';
soundsc(y,fs); % play sound
I'm also attaching mine.
% Program to create a warbling wave file with variable amplitude and pitch.
% function make_wav_file()
% Initialization / clean-up code.
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 20;
% Create the filename where we will save the waveform.
folder = pwd;
baseFileName = 'Test_Wave.wav';
fullFileName = fullfile(folder, baseFileName);
fprintf('Full File Name = %s\n', fullFileName);
% Set up the time axis:
Fs = 8000;
duration = 2; % seconds.
t = 1 : duration * Fs; % 2 seconds
% Set up the period (pitch, frequency):
T = 13; % Constant pitch if you use this.
T = linspace(25, 8, length(t)); % Pitch changes if you use this.
% Create the maximum amplitude:
Amplitude = 32767;
% Add an exponential decay:
Amplitude = Amplitude .* exp(-0.0003*t);
% Add an ocillation on the amplitude:
% Amplitude = Amplitude .* rand(1, length(x)); % Makes a shushing/roaring sound.
Amplitude = Amplitude .* sin(2.*pi.*t./2000); % Decaying pulsing sound.
% Construct the waveform:
y = int16(Amplitude .* sin(2.*pi.*t./T));
% y = abs(int16(Amplitude .* sin(2.*pi.*x./T)));
% Plot the waveform:
plot(t, y, 'b-');
title('Waveform', 'FontSize', fontSize);
xlabel('Time', 'FontSize', fontSize);
ylabel('Y', 'FontSize', fontSize);
grid on;
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
fprintf('Writing file %s...\n', fullFileName);
% Write the waveform to a file:
audiowrite(fullFileName, y, Fs);
% Play the sound as many times as the user wants.
playAgain = true;
counter = 1;
while playAgain
% Play the sound that we just created.
fprintf('Playing file %s %d times...\n', fullFileName, counter);
player = audioplayer(y, Fs);
play(player);
% Ask user if they want to play the sound again.
promptMessage = sprintf('You have played the sound %d times.\nDo you want to play the sound again?', counter);
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Yes', 'No', 'Yes');
if strcmpi(button, 'No')
playAgain = false;
break;
end
counter = counter + 1;
end
% Alert user that we are done.
message = sprintf('Done playing %s.\n', fullFileName);
fprintf('%s\n', message);
promptMessage = sprintf('Done playing %s.\nClick OK to close the window\nor Cancel to leave it up.', fullFileName);
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'OK', 'Cancel', 'OK');
if strcmpi(button, 'OK')
close all; % Close down the figure.
end

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Youssef Khmou
Youssef Khmou 2014-7-8
There are many files that you can load and study using frequency analysis, here is simple example :
data=load('gong.mat');
Fs=data.Fs;
y=data.y; % vector 42028x1
sound(y,Fs)

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