paex_pink.c File Reference
Generate Pink Noise using Gardner method.
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#include <stdio.h>
#include <math.h>
#include "portaudio.h"
Go to the source code of this file.
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Data Structures |
struct | PinkNoise |
struct | paTestData |
Defines |
#define | PINK_MAX_RANDOM_ROWS (30) |
#define | PINK_RANDOM_BITS (24) |
#define | PINK_RANDOM_SHIFT ((sizeof(long)*8)-PINK_RANDOM_BITS) |
#define | PINK_MEASURE |
#define | PINK_TEST |
Functions |
void | InitializePinkNoise (PinkNoise *pink, int numRows) |
float | GeneratePinkNoise (PinkNoise *pink) |
int | main (void) |
Variables |
float | pinkMax = -999.0 |
float | pinkMin = 999.0 |
Detailed Description
Generate Pink Noise using Gardner method.
Optimization suggested by James McCartney uses a tree to select which random value to replace.
x x x x x x x x x x x x x x x x
x x x x x x x x
x x x x
x x
x
Tree is generated by counting trailing zeros in an increasing index. When the index is zero, no random number is selected.
- Author:
- Phil Burk http://www.softsynth.com
Definition in file paex_pink.c.