Showing the changes to LEAF/Src_cpp/leaf-math.cpp (1 of 11 files). Show all
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| @@ -18,13 +18,98 @@ · 17 unmodified lines | ||
| 18 | 18 | #include "../Inc/leaf-math.h" |
| 19 | 19 | #include "../Inc/leaf-wavetables.h" |
| 20 | 20 | |
| 21 | −#endif | |
| 21 | +#endif | |
| 22 | + | |
| 23 | +//#include "../JuceLibraryCode/JuceHeader.h" | |
| 24 | + | |
| 22 | 25 | |
| 23 | 26 | // The C-embedded Audio Library. |
| 24 | 27 | #define TWO_TO_16 65536.f |
| 25 | 28 | |
| 26 | 29 | #define EXPONENTIAL_TABLE_SIZE 65536 |
| 27 | − | |
| 30 | + | |
| 31 | +void LEAF_generate_sine(float* buffer, int size) | |
| 32 | +{ | |
| 33 | + float phase; | |
| 34 | + for (int i = 0; i < size; i++) | |
| 35 | + { | |
| 36 | + phase = (float) i / (float) size; | |
| 37 | + buffer[i] = sinf(phase * TWO_PI); | |
| 38 | + } | |
| 39 | +} | |
| 40 | + | |
| 41 | +void LEAF_generate_sawtooth(float* buffer, float basefreq, int size) | |
| 42 | +{ | |
| 43 | + int harmonic = 1; | |
| 44 | + float phase = 0.0f; | |
| 45 | + float freq = harmonic * basefreq; | |
| 46 | + float amp; | |
| 47 | + | |
| 48 | + while (freq < (leaf.sampleRate * 0.5)) | |
| 49 | + { | |
| 50 | + amp = 1.0f / harmonic; | |
| 51 | + for (int i = 0; i < size; i++) | |
| 52 | + { | |
| 53 | + phase = (float) i / (float) size; | |
| 54 | + buffer[i] += (amp * sinf(harmonic * phase * TWO_PI)); | |
| 55 | + } | |
| 56 | + | |
| 57 | + harmonic++; | |
| 58 | + freq = harmonic * basefreq; | |
| 59 | + } | |
| 60 | +} | |
| 61 | + | |
| 62 | + | |
| 63 | +void LEAF_generate_triangle(float* buffer, float basefreq, int size) | |
| 64 | +{ | |
| 65 | + int harmonic = 1; | |
| 66 | + float phase = 0.0f; | |
| 67 | + float freq = harmonic * basefreq; | |
| 68 | + float amp = 1.0f; | |
| 69 | + | |
| 70 | + int count = 0; | |
| 71 | + float mult = 1.0f; | |
| 72 | + | |
| 73 | + while (freq < (leaf.sampleRate * 0.5)) | |
| 74 | + { | |
| 75 | + amp = 1.0f / (float)(harmonic * harmonic); | |
| 76 | + | |
| 77 | + if (count % 2) mult = -1.0f; | |
| 78 | + else mult = 1.0f; | |
| 79 | + | |
| 80 | + for (int i = 0; i < size; i++) | |
| 81 | + { | |
| 82 | + phase = (float) i / (float) size; | |
| 83 | + buffer[i] += (mult * amp * sinf(harmonic * phase * TWO_PI)); | |
| 84 | + } | |
| 85 | + | |
| 86 | + count++; | |
| 87 | + harmonic += 2; | |
| 88 | + freq = harmonic * basefreq; | |
| 89 | + } | |
| 90 | +} | |
| 91 | + | |
| 92 | +void LEAF_generate_square(float* buffer, float basefreq, int size) | |
| 93 | +{ | |
| 94 | + int harmonic = 1; | |
| 95 | + float phase = 0.0f; | |
| 96 | + float freq = harmonic * basefreq; | |
| 97 | + float amp = 1.0f; | |
| 98 | + | |
| 99 | + while (freq < (leaf.sampleRate * 0.5)) | |
| 100 | + { | |
| 101 | + amp = 1.0f / (float)(harmonic); | |
| 102 | + | |
| 103 | + for (int i = 0; i < size; i++) | |
| 104 | + { | |
| 105 | + phase = (float) i / (float) size; | |
| 106 | + buffer[i] += (amp * sinf(harmonic * phase * TWO_PI)); | |
| 107 | + } | |
| 108 | + | |
| 109 | + harmonic += 2; | |
| 110 | + freq = harmonic * basefreq; | |
| 111 | + } | |
| 112 | +} | |
| 28 | 113 | |
| 29 | 114 | |
| 30 | 115 | |