5 // 1. allocate some memory
6 uint_t n = 0; // frame counter
7 uint_t win_s = 1024; // window size
8 uint_t hop_s = win_s / 4; // hop size
9 uint_t samplerate = 44100; // samplerate
10 // create some vectors
11 fvec_t *input = new_fvec (hop_s); // input buffer
12 fvec_t *out = new_fvec (1); // output candidates
13 // create pitch object
14 aubio_pitch_t *o = new_aubio_pitch ("default", win_s, hop_s, samplerate);
16 // 2. do something with it
18 // get `hop_s` new samples into `input`
21 aubio_pitch_do (o, input, out);
22 // do something with output candidates
33 if (new_aubio_pitch(0, win_s, hop_s, samplerate)) return 1;
34 if (new_aubio_pitch("unknown", win_s, hop_s, samplerate)) return 1;
35 if (new_aubio_pitch("default", win_s, 0, samplerate)) return 1;
36 if (new_aubio_pitch("default", 0, hop_s, samplerate)) return 1;
37 if (new_aubio_pitch("default", hop_s, win_s, samplerate)) return 1;
38 if (new_aubio_pitch("default", win_s, hop_s, 0)) return 1;
40 o = new_aubio_pitch("default", win_s, hop_s, samplerate);
42 if (aubio_pitch_set_unit(o, "freq")) return 1;
43 if (aubio_pitch_set_unit(o, "hertz")) return 1;
44 if (aubio_pitch_set_unit(o, "Hertz")) return 1;
45 if (aubio_pitch_set_unit(o, "Hz")) return 1;
46 if (aubio_pitch_set_unit(o, "f0")) return 1;
47 if (aubio_pitch_set_unit(o, "midi")) return 1;
48 if (aubio_pitch_set_unit(o, "cent")) return 1;
49 if (aubio_pitch_set_unit(o, "bin")) return 1;
50 if (!aubio_pitch_set_unit(o, "unknown")) return 1;
52 if (aubio_pitch_set_tolerance(o, 0.3)) return 1;
53 if (aubio_pitch_set_silence(o, 0)) return 1;
54 if (aubio_pitch_set_silence(o, -200)) return 1;
55 if (!aubio_pitch_set_silence(o, -300)) return 1;
58 // fft based might fail with non power of 2
59 o = new_aubio_pitch("yinfft", win_s + 1, hop_s, samplerate);
60 if (o) del_aubio_pitch(o);
61 o = new_aubio_pitch("yinfast", win_s + 1, hop_s, samplerate);
62 if (o) del_aubio_pitch(o);
63 o = new_aubio_pitch("fcomb", win_s + 1, hop_s, samplerate);
64 if (o) del_aubio_pitch(o);
65 o = new_aubio_pitch("mcomb", win_s + 1, hop_s, samplerate);
66 if (o) del_aubio_pitch(o);
67 o = new_aubio_pitch("specacf", win_s + 1, hop_s, samplerate);
68 if (o) del_aubio_pitch(o);