1 files changed, 0 insertions, 112 deletions
diff --git a/samples/SpeechRecognition/src/MathUtils.cpp b/samples/SpeechRecognition/src/MathUtils.cpp
deleted file mode 100644
index bf9908343a..0000000000
--- a/samples/SpeechRecognition/src/MathUtils.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-//
-// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
-// SPDX-License-Identifier: MIT
-//
-
-#include "MathUtils.hpp"
-#include <vector>
-#include <cmath>
-#include <cstdio>
-
-void MathUtils::FftF32(std::vector<float>& input,
-                       std::vector<float>& fftOutput)
-{
-    const int inputLength = input.size();
-
-    for (int k = 0; k <= inputLength / 2; k++)
-    {
-        float sumReal = 0, sumImag = 0;
-
-        for (int t = 0; t < inputLength; t++)
-        {
-            float angle = 2 * M_PI * t * k / inputLength;
-            sumReal += input[t] * cosf(angle);
-            sumImag += -input[t] * sinf(angle);
-        }
-
-        /* Arrange output to [real0, realN/2, real1, im1, real2, im2, ...] */
-        if (k == 0)
-        {
-            fftOutput[0] = sumReal;
-        }
-        else if (k == inputLength / 2)
-        {
-            fftOutput[1] = sumReal;
-        }
-        else
-        {
-            fftOutput[k*2] = sumReal;
-            fftOutput[k*2 + 1] = sumImag;
-        };
-    }
-}
-
-float MathUtils::DotProductF32(float* srcPtrA, float* srcPtrB,
-                               const int srcLen)
-{
-    float output = 0.f;
-
-    for (int i = 0; i < srcLen; ++i)
-    {
-        output += *srcPtrA++ * *srcPtrB++;
-    }
-    return output;
-}
-
-bool MathUtils::ComplexMagnitudeSquaredF32(float* ptrSrc,
-                                           const int srcLen,
-                                           float* ptrDst,
-                                           const int dstLen)
-{
-    if (dstLen < srcLen/2)
-    {
-        printf("dstLen must be greater than srcLen/2");
-        return false;
-    }
-
-    for (int j = 0; j < srcLen; ++j)
-    {
-        const float real = *ptrSrc++;
-        const float im = *ptrSrc++;
-        *ptrDst++ = real*real + im*im;
-    }
-    return true;
-}
-
-void MathUtils::VecLogarithmF32(std::vector <float>& input,
-                                std::vector <float>& output)
-{
-    for (auto in = input.begin(), out = output.begin();
-         in != input.end(); ++in, ++out)
-    {
-        *out = logf(*in);
-    }
-}
-
-float MathUtils::MeanF32(float* ptrSrc, const uint32_t srcLen)
-{
-    if (!srcLen)
-    {
-        return 0.f;
-    }
-
-    float acc = std::accumulate(ptrSrc, ptrSrc + srcLen, 0.0);
-    return acc/srcLen;
-}
-
-float MathUtils::StdDevF32(float* ptrSrc, const uint32_t srcLen,
-                           const float mean)
-{
-    if (!srcLen)
-    {
-        return 0.f;
-    }
-    auto VarianceFunction = [=](float acc, const float value) {
-        return acc + (((value - mean) * (value - mean))/ srcLen);
-    };
-
-    float acc = std::accumulate(ptrSrc, ptrSrc + srcLen, 0.0,
-                                VarianceFunction);
-    return sqrtf(acc);
-}
-