feat: add realistic portable localization core

tests/unit/webgpu.test.js

@@ -81,6 +81,36 @@ test("STFT batch를 bin-frame-microphone-complex 순서로 packing한다", () =>
   expected.forEach((value, index) => assertEqual(packed[index], value, `packed STFT value ${index}`));
 });
 
+test("WebGPU STFT packing이 microphone 주파수 응답을 bin별로 역보정한다", () => {
+  const stft = {
+    frameCount: 1,
+    microphoneCount: 1,
+    spectra: new Map([[8, { real: Float32Array.of(0), imaginary: Float32Array.of(2) }]]),
+  };
+  const microphones = [{
+    frequencyResponse: [
+      { frequencyHz: 0, gainDb: 6.020599913, phaseDeg: 90 },
+      { frequencyHz: 4000, gainDb: 6.020599913, phaseDeg: 90 },
+    ],
+  }];
+  const compensated = packStftBatch(stft, [8], {
+    microphones,
+    sampleRate: 8000,
+    fftSize: 256,
+  });
+  assertNear(compensated[0], 1, 1e-6, "inverse response real");
+  assertNear(compensated[1], 0, 1e-6, "inverse response imaginary");
+
+  const uncompensated = packStftBatch(stft, [8], {
+    microphones,
+    sampleRate: 8000,
+    fftSize: 256,
+    compensateFrequencyResponse: false,
+  });
+  assertEqual(uncompensated[0], 0, "disabled compensation real");
+  assertEqual(uncompensated[1], 2, "disabled compensation imaginary");
+});
+
 test("WebGPU batch size가 storage, dispatch, memory 한도를 모두 지킨다", () => {
   const workload = {
     selectedBins: [4, 5, 6, 7, 8],