music piece with matlab

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Giovanni Scamardo
回答： Star Strider 2022-4-4
do you know how to create a discrete time signal with musical notes having a sampling rate of 8000 samples per second?

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回答（2 个）

Geoff Hayes
Geoff Hayes 2022-4-4
@Giovanni Scamardo - from https://www.mathworks.com/matlabcentral/answers/335544-matlab-play-notes-for-different-duration-s-as-specified-by, you could do something similar to
fs = 8000;
t1 = 0:1/fs:0.3;
t2 = 0:1/fs:0.6;
t3 = 0:1/fs:0.9;
C2 = 65.4064;
D2 = 73.4162;
F2 = 87.3071;
ft = [t1*C2 t2*D2 t3*F2];
Y = sin(2*pi*ft);
player = audioplayer(Y,fs);
playblocking(player);
Star Strider
Star Strider 2022-4-4
Another approach —
A4 = 440;
A5 = 880;
Notes = A4*2^(1/12).^linspace(0, 11, 12); % Note Frequencies
Fs = 8000; % Sampling Frequency
t = linspace(0, Fs-1, Fs)/Fs; % Time Vector
NotesMatrix = sin(2*pi*t(:)*Notes); % Matrix Of One-Second Notes
for k = 1:size(NotesMatrix,2)
soundsc( NotesMatrix(:,k), Fs)
pause(1.1)
end
Reference: Frequencies for even-tempered scale, A_4 = 440 Hz
.

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