Let's generate a valid sample for our wave form

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@731 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 2 insertions, 2 deletions

diff --git a/fxotune.c b/fxotune.c
index 04f89ed..07fb834 100755
--- a/fxotune.c
+++ b/fxotune.c
@@ -34,7 +34,7 @@
 #define BUFFER_LENGTH 8000			/* 4000 sample buffers */
 #define SKIP_BYTES 1600
 
-#define PI 3.14
+static const float loudness = 16384.0;
 
 static char *zappath = "/dev/zap";
 static char *configfile = "/etc/fxotune.conf";
@@ -56,7 +56,7 @@ static int debug = 0;
  * Returns a 16bit slinear sample. */
 static short inline gentone(int hz, int index)
 {
-	return sinf(index * 2 * PI * hz/8000);
+	return loudness * sin((index * 2.0 * M_PI * hz)/8000);
 }
 
 /* Returns the power of the buffer of samples in 16bit slinear format.