diff --git a/Makefile b/Makefile
index 3e99959..dfe4a54 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 
-CFLAGS = -g -DUP=0 -DDN=1 -D_GNU_SOURCE=1 -W -Wall -O3 -std=c99 -ffast-math -fsingle-precision-constant $(shell sdl-config --cflags)
+CFLAGS = -g -DUP=1 -DDN=1 -D_GNU_SOURCE=1 -W -Wall -O3 -std=c99 -ffast-math -fsingle-precision-constant $(shell sdl-config --cflags)
 LDFLAGS = -lm -lasound $(shell sdl-config --libs)
 
 all: encode decode debug
diff --git a/README b/README
index e9d723e..8c69d7d 100644
--- a/README
+++ b/README
@@ -26,7 +26,7 @@ You can find a lot more about DDC's and FM demodulation on the Internet.
 I Suggest finding and reading the enlightening "Virtual Radios" Paper of Vanu Bose, Michael Ismert, Matt Welborn, and John Guttag.
 You should also look at GNU Radio: http://gnuradio.org/ and at the invaluable information at dspGuru: http://www.dspguru.com/
 
-smpte.ppm is converted from http://en.wikipedia.org/wiki/File:SMPTE_Color_Bars.svg 
+smpte.ppm is converted from http://en.wikipedia.org/wiki/File:SMPTE_Color_Bars.svg
 
 compile everything:
 # make
diff --git a/alsa.c b/alsa.c
index d0e6b19..788f003 100644
--- a/alsa.c
+++ b/alsa.c
@@ -8,7 +8,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <alsa/asoundlib.h> 
+#include <alsa/asoundlib.h>
 #include "alsa.h"
 
 struct alsa {
@@ -96,14 +96,14 @@ int open_alsa_read(struct pcm **p, char *name)
 		free(alsa);
 		return 0;
 	}
-  
+
 	if (snd_pcm_hw_params_any(pcm, params) < 0) {
 		fprintf(stderr, "Can not configure this PCM device.\n");
 		snd_pcm_close(alsa->pcm);
 		free(alsa);
 		return 0;
 	}
-  
+
 	if (snd_pcm_hw_params_set_access(pcm, params, SND_PCM_ACCESS_RW_INTERLEAVED) < 0) {
 		fprintf(stderr, "Error setting access.\n");
 		snd_pcm_close(alsa->pcm);
@@ -172,14 +172,14 @@ int open_alsa_write(struct pcm **p, char *name, int rate, int channels, float se
 		free(alsa);
 		return 0;
 	}
-  
+
 	if (snd_pcm_hw_params_any(pcm, params) < 0) {
 		fprintf(stderr, "Can not configure this PCM device.\n");
 		snd_pcm_close(alsa->pcm);
 		free(alsa);
 		return 0;
 	}
-  
+
 	if (snd_pcm_hw_params_set_access(pcm, params, SND_PCM_ACCESS_RW_INTERLEAVED) < 0) {
 		fprintf(stderr, "Error setting access.\n");
 		snd_pcm_close(alsa->pcm);
diff --git a/ddc.c b/ddc.c
index b9513f1..643b779 100644
--- a/ddc.c
+++ b/ddc.c
@@ -5,7 +5,7 @@ To the extent possible under law, the author(s) have dedicated all copyright and
 You should have received a copy of the CC0 Public Domain Dedication along with this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
 */
 
-#include <complex.h> 
+#include <complex.h>
 #include <math.h>
 #include <stdlib.h>
 #include "window.h"
diff --git a/debug.c b/debug.c
index 9518a94..e581fac 100644
--- a/debug.c
+++ b/debug.c
@@ -10,7 +10,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
-#include <complex.h> 
+#include <complex.h>
 #include <time.h>
 #include "mmap_file.h"
 #include "pcm.h"
diff --git a/decode.c b/decode.c
index abcd69b..79528b9 100644
--- a/decode.c
+++ b/decode.c
@@ -10,7 +10,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
-#include <complex.h> 
+#include <complex.h>
 #include <time.h>
 #include "pcm.h"
 #include "ddc.h"
diff --git a/encode.c b/encode.c
index 5991da1..f56f857 100644
--- a/encode.c
+++ b/encode.c
@@ -10,7 +10,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
-#include <complex.h> 
+#include <complex.h>
 #include <limits.h>
 #include "yuv.h"
 #include "utils.h"
@@ -195,7 +195,7 @@ int main(int argc, char **argv)
 	}
 
 	while (add_sample(0.0));
-	
+
 	close_pcm(pcm);
 	close_img(img);
 	return 0;
diff --git a/mmap_file.c b/mmap_file.c
index 4f5c360..1a7b548 100644
--- a/mmap_file.c
+++ b/mmap_file.c
@@ -39,12 +39,12 @@ int mmap_file_ro(void **p, char *name, size_t *size)
 	if (*p == MAP_FAILED) {
 		perror("mmap");
 		close(fd);
-		return 0; 
+		return 0;
 	}
 
 	if (close(fd) == -1) {
 		perror ("close");
-		return 0; 
+		return 0;
 	}
 	*size = sb.st_size;
 	return 1;
@@ -87,12 +87,12 @@ int mmap_file_rw(void **p, char *name, size_t size)
 	if (*p == MAP_FAILED) {
 		perror("mmap");
 		close(fd);
-		return 0; 
+		return 0;
 	}
 
 	if (close(fd) == -1) {
 		perror ("close");
-		return 0; 
+		return 0;
 	}
 	return 1;
 }