juce::dsp::Bias< FloatType > Class Template Reference

Adds a DC offset (voltage bias) to the audio samples. More...

#include <juce_Bias.h>

Collaboration diagram for juce::dsp::Bias< FloatType >:

Public Member Functions
	Bias () noexcept=default
FloatType	getBias () const noexcept
	Returns the DC bias. More...
double	getRampDurationSeconds () const noexcept
void	prepare (const ProcessSpec &spec) noexcept
	Called before processing starts. More...
template<typename ProcessContext >
void	process (const ProcessContext &context) noexcept
	Processes the input and output buffers supplied in the processing context. More...
template<typename SampleType >
SampleType	processSample (SampleType inputSample) noexcept
	Returns the result of processing a single sample. More...
void	reset () noexcept
void	setBias (FloatType newBias) noexcept
	Sets the DC bias. More...
void	setRampDurationSeconds (double newDurationSeconds) noexcept
	Sets the length of the ramp used for smoothing gain changes. More...

Private Member Functions
void	updateRamp () noexcept

Private Attributes
SmoothedValue< FloatType >	bias
double	rampDurationSeconds = 0
double	sampleRate = 0

Detailed Description

template<typename FloatType>
class juce::dsp::Bias< FloatType >

Adds a DC offset (voltage bias) to the audio samples.

This is a useful preprocessor for asymmetric waveshaping when a waveshaper is bookended by a bias on input and a DC-offset removing high pass filter on output.

This is an extremely simple bias implementation that simply adds a value to a signal. More complicated bias behaviours exist in real circuits - for your homework ;).

@tags{DSP}

Constructor & Destructor Documentation

Bias()

template<typename FloatType >

juce::dsp::Bias< FloatType >::Bias ( )

defaultnoexcept

Member Function Documentation

getBias()

template<typename FloatType >

FloatType juce::dsp::Bias< FloatType >::getBias ( ) const

inlinenoexcept

Returns the DC bias.

Returns

DC bias, which should be in the range [-1, 1]

References juce::dsp::Bias< FloatType >::bias, and juce::SmoothedValueBase< SmoothedValueType >::getTargetValue().

getRampDurationSeconds()

template<typename FloatType >

double juce::dsp::Bias< FloatType >::getRampDurationSeconds ( ) const

inlinenoexcept

References juce::dsp::Bias< FloatType >::rampDurationSeconds.

prepare()

template<typename FloatType >

void juce::dsp::Bias< FloatType >::prepare ( const ProcessSpec &  spec )

inlinenoexcept

Called before processing starts.

References juce::dsp::Bias< FloatType >::sampleRate, and juce::dsp::Bias< FloatType >::updateRamp().

process()

template<typename FloatType >

template<typename ProcessContext >

void juce::dsp::Bias< FloatType >::process ( const ProcessContext &  context )

inlinenoexcept

Processes the input and output buffers supplied in the processing context.

References juce::dsp::Bias< FloatType >::bias, juce::gl::dst, juce::SmoothedValue< FloatType, SmoothingType >::getNextValue(), jassert, JUCE_BEGIN_IGNORE_WARNINGS_MSVC, JUCE_END_IGNORE_WARNINGS_MSVC, juce::gl::len, juce::SmoothedValue< FloatType, SmoothingType >::skip(), and juce::gl::src.

processSample()

template<typename FloatType >

template<typename SampleType >

SampleType juce::dsp::Bias< FloatType >::processSample ( SampleType  inputSample )

inlinenoexcept

Returns the result of processing a single sample.

References juce::dsp::Bias< FloatType >::bias, and juce::SmoothedValue< FloatType, SmoothingType >::getNextValue().

reset()

template<typename FloatType >

void juce::dsp::Bias< FloatType >::reset ( )

inlinenoexcept

References juce::dsp::Bias< FloatType >::bias, juce::dsp::Bias< FloatType >::rampDurationSeconds, juce::SmoothedValue< FloatType, SmoothingType >::reset(), and juce::dsp::Bias< FloatType >::sampleRate.

setBias()

template<typename FloatType >

void juce::dsp::Bias< FloatType >::setBias ( FloatType  newBias )

inlinenoexcept

Sets the DC bias.

Parameters

newBias

DC offset in range [-1, 1]

References juce::dsp::Bias< FloatType >::bias, jassert, and juce::SmoothedValue< FloatType, SmoothingType >::setTargetValue().

setRampDurationSeconds()

template<typename FloatType >

void juce::dsp::Bias< FloatType >::setRampDurationSeconds ( double  newDurationSeconds )

inlinenoexcept

Sets the length of the ramp used for smoothing gain changes.

References juce::dsp::Bias< FloatType >::rampDurationSeconds, and juce::dsp::Bias< FloatType >::updateRamp().

updateRamp()

template<typename FloatType >

void juce::dsp::Bias< FloatType >::updateRamp ( )

inlineprivatenoexcept

References juce::dsp::Bias< FloatType >::bias, juce::dsp::Bias< FloatType >::rampDurationSeconds, juce::SmoothedValue< FloatType, SmoothingType >::reset(), and juce::dsp::Bias< FloatType >::sampleRate.

Referenced by juce::dsp::Bias< FloatType >::prepare(), and juce::dsp::Bias< FloatType >::setRampDurationSeconds().

Member Data Documentation

bias

template<typename FloatType >

SmoothedValue<FloatType> juce::dsp::Bias< FloatType >::bias

private

Referenced by juce::dsp::Bias< FloatType >::getBias(), juce::dsp::Bias< FloatType >::process(), juce::dsp::Bias< FloatType >::processSample(), juce::dsp::Bias< FloatType >::reset(), juce::dsp::Bias< FloatType >::setBias(), and juce::dsp::Bias< FloatType >::updateRamp().

rampDurationSeconds

template<typename FloatType >

double juce::dsp::Bias< FloatType >::rampDurationSeconds = 0

private

Referenced by juce::dsp::Bias< FloatType >::getRampDurationSeconds(), juce::dsp::Bias< FloatType >::reset(), juce::dsp::Bias< FloatType >::setRampDurationSeconds(), and juce::dsp::Bias< FloatType >::updateRamp().

sampleRate

template<typename FloatType >

double juce::dsp::Bias< FloatType >::sampleRate = 0

private

Referenced by juce::dsp::Bias< FloatType >::prepare(), juce::dsp::Bias< FloatType >::reset(), and juce::dsp::Bias< FloatType >::updateRamp().

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

• juce_Bias.h