feat: implement free-field CPU beamforming

packages/contracts/validation.js

@@ -332,14 +332,31 @@ function validateExperimentRelationships(value, context = {}) {
     });
   }
   if (context.arrayDefinition && context.scene) {
-    const estimatedBytes =
-      context.arrayDefinition.microphones.length * Math.ceil(context.scene.duration * context.scene.sampleRate) * 4;
+    const retainedBufferCount = context.arrayDefinition.microphones.length + context.scene.sources.length + 1;
+    const sampleCount = Math.ceil(context.scene.duration * context.scene.sampleRate);
+    let maximumDelaySamples = 0;
+    for (const source of context.scene.sources) {
+      for (const microphone of context.arrayDefinition.microphones) {
+        const distance = Math.hypot(
+          source.position[0] - microphone.position[0],
+          source.position[1] - microphone.position[1],
+          source.position[2] - microphone.position[2],
+        );
+        maximumDelaySamples = Math.max(
+          maximumDelaySamples,
+          (distance / context.scene.speedOfSound) * context.scene.sampleRate,
+        );
+      }
+    }
+    let delayFftSize = 1;
+    while (delayFftSize < sampleCount + Math.ceil(maximumDelaySamples) + 2) delayFftSize *= 2;
+    const estimatedBytes = retainedBufferCount * sampleCount * 4 + delayFftSize * 8 * 4;
     const maximumBytes = 512 * 1024 * 1024;
     if (estimatedBytes > maximumBytes) {
       addIssue(
         issues,
         "$",
-        `현재 비스트리밍 CPU 모델의 채널 buffer 예상 크기 ${(estimatedBytes / 1024 ** 2).toFixed(1)} MiB가 512 MiB 한도를 넘습니다.`,
+        `현재 비스트리밍 CPU 모델의 signal buffer 예상 크기 ${(estimatedBytes / 1024 ** 2).toFixed(1)} MiB가 512 MiB 한도를 넘습니다.`,
       );
     }
   }