Changeset 5551:b2d3093178c9 in roaraudio

Timestamp:

06/18/12 00:07:18 (11 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

limit output to avoid bad clippin

File:

• libroardsp/filter_goertzel.c (modified) (2 diffs)

libroardsp/filter_goertzel.c

@@ -59 +59 @@
 }
 
-#define _calcX(bits,twobits) \
+#define _calcX(bits,twobits,limit) \
 int roardsp_goertzel_calc##bits  (struct roardsp_filter * filter, void * data, size_t samples) { \
  struct roardsp_goertzel * self = (struct roardsp_goertzel *) filter->inst; \
@@ -91 +91 @@
   s  += h; \
   s  -= g; \
-  s  *= 0.0001;
-  s  /= (float)((i+1)*(i+1));
+  s  *= 0.0001; \
+  s  /= (float)((i+1)*(i+1)); \
+  if ( s > (limit) ) \
+   s = (limit); \
   samp[i]  = s; \
- }; \
+ } \
 \
  return 0; \
 }
 
-_calcX(8,16)
-_calcX(16,32)
-_calcX(32,64)
+_calcX(8,16,127.)
+_calcX(16,32,32767.)
+_calcX(32,64,2147483647.)
 
 int roardsp_goertzel_ctl   (struct roardsp_filter * filter, int cmd, void * data) {