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Temporarily remove fft code

Andrea Condoluci 9 年 前
コミット
0b79da4a89
2 ファイル変更0 行追加67 行削除
  1. 0 53
      src/Util/fft.ts
  2. 0 14
      test/Util/fft.ts

+ 0 - 53
src/Util/fft.ts

@@ -1,53 +0,0 @@
-import FFT = require("FFT");
-
-export class FFT2 {
-
-  public static toRealImag(timeData: number[]): { imag: Float64Array; real: Float64Array; } {
-    let n: number = timeData.length;
-    let fft: any = new FFT.complex(2 * n, false);
-    let output: Float64Array = new Float64Array(2 * n);
-    let input: Float64Array = new Float64Array(n);
-    // copy timeData into the input array
-    // FIXME: is this fix needed?
-    // problem: complex transform, real timeData
-    for (let i: number = 0; i < n; i++) {
-      input[i] = timeData[i];
-      //input[2 * i + 1] = 0;
-    }
-    fft.simple(output, input, "real");
-    // Split output in real/imaginary parts
-    let real: Float64Array = new Float64Array(n);
-    let imag: Float64Array = new Float64Array(n);
-    for (let i: number = 0; i < n; i ++) {
-      real[i] = output[2 * i];
-      imag[i] = output[2 * i + 1];
-    }
-    return {imag: imag, real: real};
-  }
-
-  public static toAmplPhas(timeData: Float64Array): { amplitude: Float64Array; phase: Float64Array; } {
-    let n: number = timeData.length;
-    let fft: any = new FFT.complex(2 * n, false);
-    let output: Float64Array = new Float64Array(2 * n);
-    let input: Float64Array = new Float64Array(2 * n);
-    // copy timeData into the input array
-    // FIXME: is this fix needed?
-    // problem: complex transform, real timeData
-    for (let i: number = 0; i < n; i++) {
-      input[2 * i] = timeData[i];
-      input[2 * i + 1] = 0;
-    }
-    fft.simple(output, input, "complex");
-    // Represent complex output in amplitude/phase form
-    let ampl: Float64Array = new Float64Array(n);
-    let phas: Float64Array = new Float64Array(n);
-    for (let i: number = 0, x: number, y: number; i < n; i += 1) {
-      x = output[2 * i];
-      y = output[2 * i + 1];
-      ampl[i] = Math.sqrt(x * x + y * y);
-      phas[i] = Math.atan2(y, x);
-    }
-    return { amplitude: ampl, phase: phas };
-  }
-
-}

+ 0 - 14
test/Util/fft.ts

@@ -1,14 +0,0 @@
-import { FFT2 } from "../../src/Util/fft";
-
-describe("Fast Fourier Transform tests:", () => {
-    describe("test1?", () => {
-        let array: number[] = [0.5, 0.5, 0.5];
-        let res: { imag: Float64Array; real: Float64Array; } = FFT2.toRealImag(array);
-
-        it("will succeed", (done: MochaDone) => {
-            console.log(res.imag[0], res.real[0]);
-            console.log(JSON.stringify(res));
-            done();
-        });
-    });
-});