ame::dsp::RcLowPass< FloatType > Class Template Reference

RC low-pass filter for parameter smoothing. More...

#include <ame_RcLowPass.hpp>

Public Member Functions
	RcLowPass (FloatType sampleRate)
void	setSampleRate (FloatType newSampleRate) noexcept
	Set new sampleRate.
void	setCutOffFrequency (FloatType cutOffFrequency) noexcept
	LPF cutoff. More...
void	setRawCoefficient (FloatType newRawCoefficient)
	Set raw coefficient value. More...
FloatType	getRawCoefficient () const noexcept
	Get raw value of coefficient. More...
FloatType	process (FloatType input) noexcept
	Process filter. More...

Detailed Description

template<std::floating_point FloatType>
class ame::dsp::RcLowPass< FloatType >

RC low-pass filter for parameter smoothing.

y[t] = x[t] * coef + (1-coef) * y[t-1]

Template Parameters

FloatType

float or double

Member Function Documentation

getRawCoefficient()

template<std::floating_point FloatType>

FloatType ame::dsp::RcLowPass< FloatType >::getRawCoefficient ( ) const

inlinenoexcept

Get raw value of coefficient.

Returns

FloatType

process()

template<std::floating_point FloatType>

FloatType ame::dsp::RcLowPass< FloatType >::process ( FloatType  input )

inlinenoexcept

Process filter.

Parameters

input

Returns

FloatType Filtered output

setCutOffFrequency()

template<std::floating_point FloatType>

void ame::dsp::RcLowPass< FloatType >::setCutOffFrequency ( FloatType  cutOffFrequency )

inlinenoexcept

LPF cutoff.

a=\frac{2\pi\cdotΔT\cdot f_{c}}{2\pi\cdotΔT\cdot f_{c}+1}

Parameters

cutOffFrequency

cutoff frequency in Hz

setRawCoefficient()

template<std::floating_point FloatType>

void ame::dsp::RcLowPass< FloatType >::setRawCoefficient ( FloatType  newRawCoefficient )

inline

Set raw coefficient value.

Parameters

newRawCoefficient

[0.0 < newRawCoefficient <= 1.0]

Attention

0より大きな、1以下の値でないといけない。0だとy[t-1]のみがバイアスとして出力されてしまうし、1以上だと発散してしまう。

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The documentation for this class was generated from the following file:

• include/ame_RcLowPass.hpp