SoundUnit: ring modulation

2022-04-27 22:57:36 -05:00 · 2022-04-27 22:57:36 -05:00 · f2b974acc5
parent ff33eed2fd
commit f2b974acc5
1 changed files with 4 additions and 0 deletions
--- a/src/engine/platform/sound/su.cpp
+++ b/src/engine/platform/sound/su.cpp
@ -33,6 +33,10 @@ void SoundUnit::NextSample(short* l, short* r) {
        ns[i]=((((cycle[i]>>15)&127)>chan[i].duty)*127)^(short)SCtriangle[(cycle[i]>>14)&255];
        break;
    }
+
+    if (chan[i].flags.ring) {
+      ns[i]=(ns[i]*ns[(i+1)&7])>>7;
+    }
    
    if (chan[i].flags.pcm) {
      if (chan[i].freq>0x8000) {