--- a/trau-decode/amr8-common.c	Thu Nov 20 22:28:45 2025 +0000
+++ b/trau-decode/amr8-common.c	Fri Nov 21 06:37:46 2025 +0000
@@ -58,7 +58,7 @@
 static const ubit_t bit8_0[8] = { 0, };
 
 /*!< check sync pattern for AMR No_Speech + low bit rate */
-static bool is_amr_low(const ubit_t *bits)
+bool is_amr_low(const ubit_t *bits)
 {
 	int i;
 
@@ -79,7 +79,7 @@
 }
 
 /*!< check sync pattern for AMR 6.7kBit/s */
-static bool is_amr_67(const ubit_t *bits)
+bool is_amr_67(const ubit_t *bits)
 {
 	int i;
 
@@ -104,7 +104,7 @@
 }
 
 /*!< check sync pattern for AMR 7.4kBit/s */
-static bool is_amr_74(const ubit_t *bits)
+bool is_amr_74(const ubit_t *bits)
 {
 	if (bits[0] != 0 || bits[1] != 0 || bits[2] != 1)
 		return false;