mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-12-22 23:56:29 +01:00
15 lines
637 B
C
15 lines
637 B
C
#define PINK_MAX_RANDOM_ROWS (30)
|
|
#define PINK_RANDOM_BITS (24)
|
|
#define PINK_RANDOM_SHIFT ((sizeof(long)*8)-PINK_RANDOM_BITS)
|
|
|
|
typedef struct
|
|
{
|
|
long pink_rows[PINK_MAX_RANDOM_ROWS];
|
|
long pink_running_sum; /* Used to optimize summing of generators. */
|
|
int pink_index; /* Incremented each sample. */
|
|
int pink_index_mask; /* Index wrapped by ANDing with this mask. */
|
|
float pink_scalar; /* Used to scale within range of -1.0 to +1.0 */
|
|
} pink_noise_t;
|
|
|
|
void initialize_pink_noise( pink_noise_t *pink, int num_rows );
|
|
float generate_pink_noise_sample( pink_noise_t *pink );
|