├── .gitignore
├── README.md
└── main.awk


/.gitignore:
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1 | *.wav
2 | \#*
3 | *~


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/README.md:
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1 | SOUNDS
2 | ========
3 | 
4 | 40 lines of awk that can play Fur Elise
5 | 
6 | ```
7 | awk -f main.awk
8 | ```


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/main.awk:
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 1 | BEGIN{
 2 |     TEMPO = "0.2"#seconds per eighth note.
 3 |     make_notes()
 4 |     s0 = "e1,d#1,"
 5 |     s1 = "e1,d#1,e1,b1,d1,c1,a1,a-1,a1,e-1,a,c,e,a1,b1,e-1,g#-1,b1,e1,g#,b1,c1 a-1,c1 e-1,a,e,e1,d#1,e1,d#1,e1,b1,d1,c1,a1 a-1,a1 e-1,a,c,e,a1,b1 e-1,b1 g#-1,b,e,c1,b1,a1 a-1,a1 e-1,,e1,d#1,"
 6 |     s2 = "a1 a-1,a1 e-1,a,b1,c1,d1,e1 c-1,e1 g-1,c,g,f1,e1,d1 b-1,d1 g-1,b,f,e1,d1,c1 a-1,c1 e-1,a,d1,c1,b1 e-2,b1 e-1,e,e,e1,e,e1,e1,e2,d#1,e1,d1,e1,d#1,e1,d1,e1,d1"
 7 |     s = s0 s1 s1 s2
 8 |     play_all(s)
 9 | }
10 | function play_all(s,       M, A, i, N, B, j) {
11 |     M = split(s, A, ",")
12 |     for(i=1; i<=M; i++){
13 |         N = split(A[i], B, " ")
14 |         for(j=1; j<=N; j++){
15 |             play(B[j])
16 |         }
17 |         system("sleep " TEMPO)
18 |     }
19 | }
20 | function make_notes(        s, A, M, i){
21 |     s = "a-2,a#-2,b-2,c-2,c#-2,d-2,d#-2,e-2,f-2,f#-2,g-2,g#-2,a-1,a#-1,b-1,c-1,c#-1,d-1,d#-1,e-1,f-1,f#-1,g-1,g#-1,a,a#,b,c,c#,d,d#,e,f,f#,g,g#,a1,a#1,b1,c1,c#1,d1,d#1,e1,f1,f#1,g1,g#1,a2,a#2,b2,c2,c#2,d2,d#2,e2,f2,f#2,g2,g#2,a3,a#3,b3,c3,c#3,d3,d#3,e3,f3,f#3,g3,g#3"
22 |     M = split(s, A, ",")
23 |     for(i=1; i<=M; i++){
24 |         make(note(-25+i), TEMPO, A[i])
25 |     }
26 | }
27 | function note(N,      A, S){
28 |     A = 440
29 |     S = 1.05946309436 #12th root of 2.
30 |     return(A * (S ^ N))
31 | }
32 | function make(tone, duration, file){
33 |     system("rm beep_" file ".wav")
34 |     system("ffmpeg -loglevel quiet -f lavfi -i \"sine=frequency=" tone ":duration=" duration "\" beep_" file ".wav")
35 | }
36 | function play(file){
37 |     print("play " file)
38 |     system("aplay -q beep_" file ".wav &")
39 | }
40 | 


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