1 files changed, 0 insertions, 96 deletions
diff --git a/alsa-utils/speaker-test/pink.c b/alsa-utils/speaker-test/pink.c
deleted file mode 100644
index ef30755..0000000
--- a/alsa-utils/speaker-test/pink.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
-  patest_pink.c
-
-  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.
-
-  This program uses the Portable Audio library which is under development.
-  For more information see:   http://www.audiomulch.com/portaudio/
-
-  Author: Phil Burk, http://www.softsynth.com
-	
-  Revision History:
-
-  Copyleft 1999 Phil Burk - No rights reserved.
-*/
-
-#include <stdio.h>
-#include <math.h>
-#include "pink.h"
-
-/************************************************************/
-/* Calculate pseudo-random 32 bit number based on linear congruential method. */
-static unsigned long generate_random_number( void )
-{
-    static unsigned long rand_seed = 22222;  /* Change this for different random sequences. */
-    rand_seed = (rand_seed * 196314165) + 907633515;
-    return rand_seed;
-}
-
-/* Setup PinkNoise structure for N rows of generators. */
-void initialize_pink_noise( pink_noise_t *pink, int num_rows )
-{
-    int i;
-    long pmax;
-    pink->pink_index = 0;
-    pink->pink_index_mask = (1<<num_rows) - 1;
-/* Calculate maximum possible signed random value. Extra 1 for white noise always added. */
-    pmax = (num_rows + 1) * (1<<(PINK_RANDOM_BITS-1));
-    pink->pink_scalar = 1.0f / pmax;
-/* Initialize rows. */
-    for( i=0; i<num_rows; i++ ) pink->pink_rows[i] = 0;
-    pink->pink_running_sum = 0;
-}
-
-/* generate Pink noise values between -1.0 and +1.0 */
-float generate_pink_noise_sample( pink_noise_t *pink )
-{
-    long new_random;
-    long sum;
-    float output;
-
-/* Increment and mask index. */
-    pink->pink_index = (pink->pink_index + 1) & pink->pink_index_mask;
-
-/* If index is zero, don't update any random values. */
-    if( pink->pink_index != 0 )
-    {
-	/* Determine how many trailing zeros in PinkIndex. */
-	/* This algorithm will hang if n==0 so test first. */
-	int num_zeros = 0;
-	int n = pink->pink_index;
-	while( (n & 1) == 0 )
-	{
-	    n = n >> 1;
-	    num_zeros++;
-	}
-
-	/* Replace the indexed ROWS random value.
-	 * Subtract and add back to Running_sum instead of adding all the random
-	 * values together. Only one changes each time.
-	 */
-	pink->pink_running_sum -= pink->pink_rows[num_zeros];
-	new_random = ((long)generate_random_number()) >> PINK_RANDOM_SHIFT;
-	pink->pink_running_sum += new_random;
-	pink->pink_rows[num_zeros] = new_random;
-    }
-	
-/* Add extra white noise value. */
-    new_random = ((long)generate_random_number()) >> PINK_RANDOM_SHIFT;
-    sum = pink->pink_running_sum + new_random;
-
-/* Scale to range of -1.0 to 0.9999. */
-    output = pink->pink_scalar * sum;
-
-    return output;
-}