feat: add comparable localization algorithms

packages/webgpu-kernels/das.wgsl.js

@@ -12,7 +12,7 @@
  * Flat buffer layouts:
  *   spectrum:    [bin][frame][microphone][real, imaginary]
  *   distances:   [point][microphone]
- *   calibration: [microphone][inverse sensitivity gain, phase offset radians]
+ *   calibration: [microphone][inverse sensitivity gain or unity, phase offset radians]
  *   steering:    [bin][point][microphone][real, imaginary]
  *   output:      [bin][point]
  */
@@ -197,9 +197,13 @@ export function packDasCalibration(calibration) {
   return packed;
 }
 
-/** Convert array-definition microphone metadata to the shader calibration layout. */
-export function packMicrophoneCalibration(microphones) {
+/**
+ * Convert array-definition microphone metadata to the shader calibration layout.
+ * Phase-only algorithms set includeAmplitude=false while retaining phase offsets.
+ */
+export function packMicrophoneCalibration(microphones, options = {}) {
   if (!Array.isArray(microphones)) throw new TypeError("microphones must be an array.");
+  const includeAmplitude = options.includeAmplitude !== false;
   const packed = new Float32Array(microphones.length * 2);
   for (let index = 0; index < microphones.length; index += 1) {
     const microphone = microphones[index];
@@ -213,7 +217,7 @@ export function packMicrophoneCalibration(microphones) {
     );
     packed[index * 2] = requireFiniteF32(
       `microphones[${index}] inverse sensitivity gain`,
-      10 ** (-sensitivityDb / 20),
+      includeAmplitude ? 10 ** (-sensitivityDb / 20) : 1,
     );
     packed[index * 2 + 1] = requireFiniteF32(
       `microphones[${index}] phase offset`,