From a7dfe6534d0930ba0f014ad1bff243ce06939d23 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Mon, 28 Nov 2022 01:27:58 -0500
Subject: [PATCH] SN: address easy noise feedback, part 1

---
 src/engine/platform/sms.cpp | 5 +++--
 src/engine/platform/sms.h   | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/engine/platform/sms.cpp b/src/engine/platform/sms.cpp
index d3085c19..7a9d53bc 100644
--- a/src/engine/platform/sms.cpp
+++ b/src/engine/platform/sms.cpp
@@ -126,14 +126,14 @@ double DivPlatformSMS::NOTE_SN(int ch, int note) {
     return NOTE_PERIODIC(note);
   }
   if (note>easyThreshold) {
-    return MAX(0,8-easyThreshold);
+    return MAX(0,easyStartingPeriod-easyThreshold);
   }
   return NOTE_PERIODIC(note);
 }
 
 int DivPlatformSMS::snCalcFreq(int ch) {
   if (parent->song.linearPitch==2 && easyNoise && chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2>(easyThreshold<<7)) {
-    int ret=(0x440-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold<<7)))>>7;
+    int ret=(((easyStartingPeriod<<7)+0x40)-(chan[ch].baseFreq+chan[ch].pitch+chan[ch].pitch2-(easyThreshold<<7)))>>7;
     if (ret<0) ret=0;
     return ret;
   }
@@ -489,6 +489,7 @@ void DivPlatformSMS::setFlags(const DivConfig& flags) {
     default:
       chipClock=COLOR_NTSC;
       easyThreshold=92;
+      easyStartingPeriod=8;
       break;
   }
   resetPhase=!flags.getBool("noPhaseReset",false);
diff --git a/src/engine/platform/sms.h b/src/engine/platform/sms.h
index 32c18193..ce3ee5e7 100644
--- a/src/engine/platform/sms.h
+++ b/src/engine/platform/sms.h
@@ -66,6 +66,7 @@ class DivPlatformSMS: public DivDispatch {
   double toneDivider=64.0;
   double noiseDivider=64.0;
   int easyThreshold;
+  int easyStartingPeriod;
   bool updateSNMode;
   bool resetPhase;
   bool isRealSN;