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Clc Clear fs=44100; t=0:1/fs:0.5; e3_2=key(52, 2, fs); %表示2分音符的e3 a3_2=key(57, 2, fs); c4_2=key(60, 2, fs); e4_2=key(52, 2, fs); g3_2=key(55, 2, fs); d4_2=key(62, 2, fs); e4_2=key(64, 2, fs); g4_2=key(67, 2, fs); e4_4=key(52, 4, fs); g3_4=key(55, 4, fs); a3_4=key(57, 4, fs); b3_4=key(59, 4, fs); c4_4=key(60, 4, fs); d4_4=key(62, 4, fs); e4_4=key(64, 4, fs); f4_4=key(65, 4, fs); g4_4=key(67, 4, fs); a4_4=key(69, 4, fs); e3_8=key(52, 8, fs); g3_8=key(55, 8, fs); a3_8=key(57, 8, fs); b3_8=key(59, 8, fs); c4_8=key(60, 8, fs); d4_8=key(62, 8, fs); e4_8=key(64, 8, fs); f4_8=key(65, 8, fs); g4_8=key(67, 8, fs); a4_8=key(69, 8, fs); b4_8=key(71, 8, fs); part1=[c4_8 c4_8 c4_4 e4_4 d4_4 d4_8 d4_4 c4_4 c4_8]; part2=[d4_4 d4_4 c4_8 a3_8 a3_2]; part3=[b3_8 b3_8 b3_4 c4_8 d4_8 d4_4]; part4=[b3_4 a3_8 g3_4 e3_8 e3_2 e3_2]; part5=[e4_8 d4_8 e4_4 d4_8 d4_8 d4_4 d4_8 c4_8 c4_2 d4_4 a3_4 a3_8 a3_8 d4_8 c4_8 c4_2]; part6=[d4_4 a3_8 g3_4 g3_8 e3_2 e3_2]; part7=[g4_4 g4_8 d4_8 d4_4 e4_4 g4_4 g4_8 d4_8 d4_4 c4_4 a3_2 a3_2]; part8=[d4_4 d4_8 a3_8 a3_4 e4_4 d4_4 d4_8 c4_8 c4_4]; part9=[c4_8 c4_8 c4_4 g3_8 c4_8 c4_4 g4_4 f4_4 e4_4 d4_4 d4_8 c4_8 c4_2 c4_4]; part10=[c4_8 e4_8 g4_8 a4_4 g4_8 a4_4 g4_4 g4_8 a4_4]; para1=[part1 part2 part3 part4]; para2=[part5 part3 part6]; para3=[part7 part8 c4_4 g3_2 g3_2]; para4=[part7 part8 c4_8 d4_8 d4_2 d4_2]; para5=[part9 part10 g4_8 e4_8 e4_8 d4_4 e4_8 e4_2]; para6=[part9 part10 g4_4 e4_8 g4_4 g4_8 g4_2]; legend=[para1 para2 para3 para4 para5 para6]; sound(legend,fs) 其中有两个函数: function g=key(p, n, fs) t=0 : 1/fs : 2/n; g=sin(2*pi* fre(p) *t); function f = fre(p) f=440*2^((p-69)/12); |
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