Remove directional muffling, set rear directional range to 30%, and correct version to R119

client/src/audio/itemEmitRuntime.ts

@@ -1,12 +1,11 @@
 import { HEARING_RADIUS, type WorldItem } from '../state/gameState';
 import { AudioEngine } from './audioEngine';
-import { resolveDirectionalMuffleRatio, resolveSpatialMix } from './spatial';
+import { resolveSpatialMix } from './spatial';
 
 type EmitOutput = {
   soundUrl: string;
   element: HTMLAudioElement;
   source: MediaElementAudioSourceNode;
-  directionalFilter: BiquadFilterNode;
   gain: GainNode;
   panner: StereoPannerNode | null;
 };
@@ -35,7 +34,6 @@ export class ItemEmitRuntime {
     output.element.pause();
     output.element.src = '';
     output.source.disconnect();
-    output.directionalFilter.disconnect();
     output.gain.disconnect();
     output.panner?.disconnect();
     this.outputs.delete(itemId);
@@ -85,20 +83,17 @@ export class ItemEmitRuntime {
       element.preload = 'none';
       element.crossOrigin = 'anonymous';
       const source = audioCtx.createMediaElementSource(element);
-      const directionalFilter = audioCtx.createBiquadFilter();
-      directionalFilter.type = 'lowpass';
-      directionalFilter.frequency.value = 12000;
       const gain = audioCtx.createGain();
       gain.gain.value = 0;
       let panner: StereoPannerNode | null = null;
-      source.connect(directionalFilter).connect(gain);
+      source.connect(gain);
       if (this.audio.supportsStereoPanner()) {
         panner = audioCtx.createStereoPanner();
         gain.connect(panner).connect(audioCtx.destination);
       } else {
         gain.connect(audioCtx.destination);
       }
-      this.outputs.set(item.id, { soundUrl, element, source, directionalFilter, gain, panner });
+      this.outputs.set(item.id, { soundUrl, element, source, gain, panner });
       void element.play().catch(() => undefined);
     }
 
@@ -133,26 +128,11 @@ export class ItemEmitRuntime {
           enabled: spatialConfig.directional,
           facingDeg: spatialConfig.facingDeg,
           coneDeg: 120,
-          rearGain: 0.5,
+          rearGain: 0.3,
         },
       });
       const gainValue = mix?.gain ?? 0;
       const panValue = mix?.pan ?? 0;
-      const muffleRatio = resolveDirectionalMuffleRatio(
-        item.x - playerPosition.x,
-        item.y - playerPosition.y,
-        {
-          enabled: spatialConfig.directional,
-          facingDeg: spatialConfig.facingDeg,
-          coneDeg: 120,
-          rearGain: 0.35,
-        },
-      );
-      const clearCutoffHz = 22050;
-      const rearCutoffHz = 4500;
-      const muffleCurve = muffleRatio * muffleRatio;
-      const cutoffHz = clearCutoffHz - (clearCutoffHz - rearCutoffHz) * muffleCurve;
-      output.directionalFilter.frequency.linearRampToValueAtTime(cutoffHz, audioCtx.currentTime + 0.1);
       output.gain.gain.linearRampToValueAtTime(gainValue, audioCtx.currentTime + 0.1);
       if (output.panner) {
         const resolvedPan = this.audio.getOutputMode() === 'mono' ? 0 : Math.max(-1, Math.min(1, panValue));