mirror of
https://github.com/alsa-project/alsa-utils
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15 lines
637 B
C
15 lines
637 B
C
#define PINK_MAX_RANDOM_ROWS (30)
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#define PINK_RANDOM_BITS (24)
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#define PINK_RANDOM_SHIFT ((sizeof(long)*8)-PINK_RANDOM_BITS)
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typedef struct
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{
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long pink_rows[PINK_MAX_RANDOM_ROWS];
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long pink_running_sum; /* Used to optimize summing of generators. */
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int pink_index; /* Incremented each sample. */
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int pink_index_mask; /* Index wrapped by ANDing with this mask. */
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float pink_scalar; /* Used to scale within range of -1.0 to +1.0 */
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} pink_noise_t;
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void initialize_pink_noise( pink_noise_t *pink, int num_rows );
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float generate_pink_noise_sample( pink_noise_t *pink );
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