#1 most common programming mistake that we see on the forum

[railjonrogut]

There’s the beginnings of an example here:

Controlling IIRFilters with a slider

Just handle the Slider changes: void CFourBandEQEffectProcessor::setFilter_3_Gain (double dGain) { m_dFilter_3_Gain = dGain; updateCoefficients(); } void CFourBandEQEffectProcessor::setFilter_3_CenterFreq (double dCenterFreq) { m_dFilter_3_CenterFreq = dCenterFreq; updateCoefficients(); } and have a method to update your coefficients: void CFourBandEQEffectProcessor::updateCoefficients() { m_Filter_1_Coefficients = IIRCoefficients::makePeakFilter (m_dSampleRate, m_dFilte…

Rail