feat: tune multi-source peak sensitivity

apps/acoustic-camera/index.html

@@ -137,6 +137,7 @@
               <label class="field"><span>Hop size</span><input id="hop-size" type="number" min="1" max="4096" step="1" /></label>
               <label class="field"><span>Map 정규화</span><select id="normalization"><option value="peak">Peak</option><option value="none">없음</option></select></label>
               <label class="field"><span>Dynamic range (dB)</span><input id="dynamic-range" type="number" min="6" max="120" step="1" /></label>
+              <label class="field" title="최강 peak 대비 검출 임계값입니다. 낮추면 약한 음원을 더 찾지만 sidelobe 오검출도 늘 수 있습니다."><span>Peak 검출 임계값 (%)</span><input id="detection-threshold" type="number" min="1" max="100" step="1" /></label>
               <label class="field field--wide"><span>후처리</span><select id="postprocess"><option value="none">없음 · raw DAS</option><option disabled>DAMAS · 후속 milestone</option><option disabled>CLEAN-SC · 후속 milestone</option></select></label>
             </div>
           </section>

apps/acoustic-camera/main.js

@@ -43,6 +43,7 @@ const BAND_COLORS = ["#65f2bf", "#58c7ff", "#ff7f8f", "#ffc56e", "#b294ff", "#8f
 const MAX_HISTORY_ITEMS = 24;
 const MAX_LIVE_ANALYSIS_FRAMES = 48;
 const MAX_LIVE_SCAN_POINTS = 2500;
+const DEFAULT_DETECTION_THRESHOLD_RATIO = 0.25;
 
 const byId = (id) => document.getElementById(id);
 const elements = {
@@ -102,6 +103,7 @@ const elements = {
   hopSize: byId("hop-size"),
   normalization: byId("normalization"),
   dynamicRange: byId("dynamic-range"),
+  detectionThreshold: byId("detection-threshold"),
   postprocess: byId("postprocess"),
   addBandButton: byId("add-band-button"),
   bandList: byId("band-list"),
@@ -168,6 +170,14 @@ function comparisonSignature(scene = state.scene, sourceExperiment = state.exper
   return canonicalStringify({ scene, experiment });
 }
 
+function applyExperimentDefaults(experiment) {
+  if (!experiment.evaluation) experiment.evaluation = {};
+  if (experiment.evaluation.detectionThresholdRatio === undefined) {
+    experiment.evaluation.detectionThresholdRatio = DEFAULT_DETECTION_THRESHOLD_RATIO;
+  }
+  return experiment;
+}
+
 function setRunStatus(message) {
   elements.runStatus.textContent = message;
 }
@@ -359,6 +369,9 @@ function syncControls() {
   elements.hopSize.value = experiment.stft.hopSize;
   elements.normalization.value = experiment.beamforming.normalization;
   elements.dynamicRange.value = experiment.beamforming.dynamicRangeDb;
+  const detectionThresholdRatio =
+    experiment.evaluation?.detectionThresholdRatio ?? DEFAULT_DETECTION_THRESHOLD_RATIO;
+  elements.detectionThreshold.value = String(Number((detectionThresholdRatio * 100).toFixed(4)));
   elements.arrayPreset.value = ARRAY_PRESET_URLS.has(state.arrayDefinition.id)
     ? state.arrayDefinition.id
     : "custom";
@@ -638,6 +651,14 @@ function renderResult() {
     `${formatNumber(displayed.run.timingMs.beamforming, 0)} ms`,
     `${displayed.snapshot.experiment.scan.columns}×${displayed.snapshot.experiment.scan.rows} grid`,
   );
+  const detectionThreshold =
+    displayed.snapshot.experiment.evaluation?.detectionThresholdRatio ??
+    DEFAULT_DETECTION_THRESHOLD_RATIO;
+  appendMetric(
+    "Peak 검출 임계값",
+    `${formatNumber(detectionThreshold * 100, 0)}%`,
+    "최강 peak power 기준 · 낮을수록 민감",
+  );
   for (const band of displayed.snapshot.experiment.frequencyBands) {
     const evaluation = displayed.evaluations.get(band.id);
     if (!evaluation) continue;
@@ -1001,6 +1022,9 @@ async function runSimulation() {
         scan: snapshot.experiment.scan,
         sources: sourcesForBand(snapshot.scene, definition),
         dynamicRangeDb: snapshot.experiment.beamforming.dynamicRangeDb,
+        detectionThresholdRatio:
+          snapshot.experiment.evaluation?.detectionThresholdRatio ??
+          DEFAULT_DETECTION_THRESHOLD_RATIO,
       });
       evaluations.set(band.id, evaluation);
       exportedEvaluations.set(band.id, exportBandEvaluation(evaluation));
@@ -1124,6 +1148,9 @@ function evaluateLiveFrames(snapshot, plan, frames) {
           scan: snapshot.experiment.scan,
           sources: sourcesForBand(frameScene, definition, frame.sampleTime),
           dynamicRangeDb: snapshot.experiment.beamforming.dynamicRangeDb,
+          detectionThresholdRatio:
+            snapshot.experiment.evaluation?.detectionThresholdRatio ??
+            DEFAULT_DETECTION_THRESHOLD_RATIO,
         }),
       );
     }
@@ -1312,7 +1339,7 @@ async function loadMovingExample() {
     if (issues.length > 0) throw new Error(issues.slice(0, 4).map(formatIssue).join(" · "));
     state.arrayDefinition = arrayDefinition;
     state.scene = scene;
-    state.experiment = experiment;
+    state.experiment = applyExperimentDefaults(experiment);
     state.sceneDirty = false;
     state.experimentDirty = false;
     state.visibleBandIds = new Set(experiment.frequencyBands.map((band) => band.id));
@@ -1403,7 +1430,7 @@ async function importDocument(kind, input) {
       state.sceneDirty = false;
       assetRuntime.reset();
     } else {
-      state.experiment = value;
+      state.experiment = applyExperimentDefaults(value);
       state.experimentDirty = false;
     }
     state.visibleBandIds = new Set(state.experiment.frequencyBands.map((band) => band.id));
@@ -1498,6 +1525,13 @@ function installDocumentInputListeners() {
     state.experiment.beamforming.dynamicRangeDb = value;
     markChanged();
   });
+  elements.detectionThreshold.addEventListener("change", () => {
+    const value = readFiniteInput(elements.detectionThreshold);
+    if (value === null) return syncControls();
+    state.experiment.evaluation ??= {};
+    state.experiment.evaluation.detectionThresholdRatio = value / 100;
+    markChanged();
+  });
 }
 
 function installBandListeners() {
@@ -1697,7 +1731,7 @@ async function initialize() {
     ]);
     state.arrayDefinition = arrayDefinition;
     state.scene = scene;
-    state.experiment = experiment;
+    state.experiment = applyExperimentDefaults(experiment);
     state.visibleBandIds = new Set(experiment.frequencyBands.map((band) => band.id));
     syncControls();
     renderBandEditors();