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DPL2Decoder: Simplify cut-off frequency logic in DesignFIR

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This commit is contained in:
MerryMage 2017-04-22 09:49:46 +01:00
parent 24027c1d4a
commit 751351fd20
1 changed files with 1 additions and 4 deletions
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5
Source/Core/AudioCommon/DPL2Decoder.cpp
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@ -134,16 +134,13 @@ static float* DesignFIR(unsigned int n, float fc, float opt)
if (n == 0)
return nullptr;
fc = MathUtil::Clamp(fc, 0.001f, 1.0f);
float* w = (float*)calloc(sizeof(float), n);
// Get window coefficients
Hamming(n, w);
fc1 = fc;
// Cutoff frequency must be < 0.5 where 0.5 <=> Fs/2
fc1 = ((fc1 <= 1.0) && (fc1 > 0.0)) ? fc1 / 2 : 0.25f;
fc1 = MathUtil::Clamp(fc, 0.001f, 1.0f) / 2;
k1 *= fc1;
// Low pass filter