Regenerate softer orchestral bgm

src/game/audio/SoundDirector.ts

@@ -10,7 +10,7 @@ class SoundDirector {
   private currentMusicKey?: string;
   private pendingMusicKey?: string;
   private musicFadeTimer?: number;
-  private readonly musicVolume = 0.2;
+  private readonly musicVolume = 0.14;
 
   registerMusicTracks(tracks: AudioTrackMap) {
     this.musicTracks = tracks;
@@ -29,7 +29,7 @@ class SoundDirector {
     if (AudioContextCtor) {
       this.context = new AudioContextCtor();
       this.master = this.context.createGain();
-      this.master.gain.value = this.muted ? 0 : 0.34;
+      this.master.gain.value = this.muted ? 0 : 0.3;
       this.master.connect(this.context.destination);
     }
 
@@ -58,7 +58,7 @@ class SoundDirector {
     }
 
     this.master.gain.cancelScheduledValues(this.context.currentTime);
-    this.master.gain.linearRampToValueAtTime(muted ? 0 : 0.34, this.context.currentTime + 0.18);
+    this.master.gain.linearRampToValueAtTime(muted ? 0 : 0.3, this.context.currentTime + 0.18);
   }
 
   isMuted() {