Ticket #8546: adlib-sfx.diff

engines/scumm/sound.cpp

@@ -1952 +1952 @@
                                                 | current_instr[ch][0];
                                         if (!freq)
                                                 freq = 0x80;
-                                        freq <<= ((current_instr[ch][1] >> 2) & 7) + 1;
+                                        freq <<= (((current_instr[ch][1] >> 2) + 1) & 7);
                                         int note = -11;
                                         while (freq >= 0x100) {
                                                 note += 12;