--- hatari/src/includes/sound.h	2019/04/09 08:50:27	1.1.1.12
+++ hatari/src/includes/sound.h	2019/04/09 08:58:11	1.1.1.14
@@ -1,8 +1,8 @@
 /*
   Hatari - sound.h
 
-  This file is distributed under the GNU Public License, version 2 or at
-  your option any later version. Read the file gpl.txt for details.
+  This file is distributed under the GNU General Public License, version 2
+  or at your option any later version. Read the file gpl.txt for details.
   
   Matthias Arndt 2008-08-15
     - cleanup to have definitions and declarations for both sound cores in one place
@@ -46,7 +46,21 @@ typedef		yms16			ymsample;	/* Output sam
 #define YM_MODEL_MIXING			3		/* Use circuit analysis model to build ymout5[] */
 
 extern int	YmVolumeMixing;
-extern bool	UseLowPassFilter;
+
+#define		YM2149_LPF_FILTER_NONE			0
+#define		YM2149_LPF_FILTER_LPF_STF		1
+#define		YM2149_LPF_FILTER_PWM			2
+extern int	YM2149_LPF_Filter;
+
+#define		YM2149_HPF_FILTER_NONE			0
+#define		YM2149_HPF_FILTER_IIR			1
+extern int	YM2149_HPF_Filter;
+
+#define		YM2149_RESAMPLE_METHOD_NEAREST			0
+#define		YM2149_RESAMPLE_METHOD_WEIGHTED_AVERAGE_2	1
+#define		YM2149_RESAMPLE_METHOD_WEIGHTED_AVERAGE_N	2
+extern int	YM2149_Resample_Method;
+
 
 extern void Sound_Init(void);
 extern void Sound_Reset(void);