void WavesReverb::RecalculateWavesReverbParams()
//----------------------------------------------
{
// Recalculate filters
const double ReverbTimeSmp = -3000.0 / (m_SndFile.GetSampleRate() * ReverbTime());
const double ReverbTimeSmpHF = ReverbTimeSmp * (1.0 / HighFreqRTRatio() - 1.0);
m_coeffs[0] = static_cast<float>(std::pow(10.0, (m_delay[4] / 2) * ReverbTimeSmp));
m_coeffs[1] = static_cast<float>(std::pow(10.0, (m_delay[5] / 2) * ReverbTimeSmp));
double sum = 0.0;
for(uint32 pair = 0; pair < 4; pair++)
{
double gain1 = std::pow(10.0, (m_delay[pair] / 4) * ReverbTimeSmp);
double gain2 = (1.0 - std::pow(10.0, ((m_delay[pair] / 4) + (m_delay[4 + pair / 2] / 2)) * ReverbTimeSmpHF)) * 0.5;
double gain3 = gain1 * m_coeffs[pair / 2];
double gain4 = gain3 * (((gain3 + 1.0) * gain3 + 1.0) * gain3 + 1.0) + 1.0;
m_coeffs[2 + pair * 2] = static_cast<float>(gain1 * (1.0 - gain2));
m_coeffs[3 + pair * 2] = static_cast<float>(gain1 * gain2);
sum += gain4 * gain4;
}
double inGain = std::pow(10.0, GainInDecibel(m_param[kRvbInGain]) * 0.05);
double reverbMix = std::pow(10.0, GainInDecibel(m_param[kRvbReverbMix]) * 0.1);
m_dryFactor = static_cast<float>(std::sqrt(1.0 - reverbMix) * inGain);
m_wetFactor = static_cast<float>(std::sqrt(reverbMix) * (4.0 / std::sqrt(sum) * inGain));
}
CString ParamEq::GetParamDisplay(PlugParamIndex param)
//----------------------------------------------------
{
float value = 0.0f;
switch(param)
{
case kEqCenter:
value = FreqInHertz();
break;
case kEqBandwidth:
value = BandwidthInSemitones();
break;
case kEqGain:
value = GainInDecibel();
break;
}
CString s;
s.Format("%.2f", value);
return s;
}
CString WavesReverb::GetParamDisplay(PlugParamIndex param)
//--------------------------------------------------------
{
float value = m_param[param];
switch(param)
{
case kRvbInGain:
case kRvbReverbMix:
value = GainInDecibel(value);
break;
case kRvbReverbTime:
value = ReverbTime();
break;
case kRvbHighFreqRTRatio:
value = HighFreqRTRatio();
break;
}
CString s;
s.Format("%.2f", value);
return s;
}
void ParamEq::RecalculateEqParams()
//---------------------------------
{
const float freq = std::min(FreqInHertz() / m_SndFile.GetSampleRate(), 0.5f);
const float a = std::pow(10, GainInDecibel() / 40.0f);
const float w0 = 2.0f * float(M_PI) * freq;
const float sinW0 = std::sin(w0);
const float cosW0 = std::cos(w0);
const float alpha = sinW0 * std::sinh((BandwidthInSemitones() * (float(M_LN2) / 24.0f)) * w0 / sinW0);
const float b0 = 1.0f + alpha * a;
const float b1 = -2.0f * cosW0;
const float b2 = 1.0f - alpha * a;
const float a0 = 1.0f + alpha / a;
const float a1 = -2.0f * cosW0;
const float a2 = 1.0f - alpha / a;
b0DIVa0 = b0 / a0;
b1DIVa0 = b1 / a0;
b2DIVa0 = b2 / a0;
a1DIVa0 = a1 / a0;
a2DIVa0 = a2 / a0;
}
