Bias< FloatType > Class Template Reference

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

#include <juce_Bias.h>

Collaboration diagram for Bias< FloatType >:

Public Member Functions
	Bias () noexcept
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) const 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
LinearSmoothedValue< FloatType >	bias
double	rampDurationSeconds = 0
double	sampleRate = 0

Detailed Description

template<typename FloatType>
class 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 ;).

Constructor & Destructor Documentation

Bias()

template<typename FloatType >

Bias< FloatType >::Bias ( )

inlinenoexcept

Member Function Documentation

getBias()

template<typename FloatType >

FloatType Bias< FloatType >::getBias ( ) const

inlinenoexcept

Returns the DC bias.

Returns

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

References Bias< FloatType >::bias.

getRampDurationSeconds()

template<typename FloatType >

double Bias< FloatType >::getRampDurationSeconds ( ) const

inlinenoexcept

References Bias< FloatType >::rampDurationSeconds.

prepare()

template<typename FloatType >

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

inlinenoexcept

Called before processing starts.

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

process()

template<typename FloatType >

template<typename ProcessContext >

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

inlinenoexcept

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

References FloatVectorOperations::add(), Bias< FloatType >::bias, and jassert.

processSample()

template<typename FloatType >

template<typename SampleType >

SampleType Bias< FloatType >::processSample ( SampleType  inputSample ) const

inlinenoexcept

Returns the result of processing a single sample.

References Bias< FloatType >::bias.

reset()

template<typename FloatType >

void Bias< FloatType >::reset ( )

inlinenoexcept

References Bias< FloatType >::bias, Bias< FloatType >::rampDurationSeconds, and Bias< FloatType >::sampleRate.

setBias()

template<typename FloatType >

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

inlinenoexcept

Sets the DC bias.

Parameters

newBias

DC offset in range [-1, 1]

References Bias< FloatType >::bias, and jassert.

setRampDurationSeconds()

template<typename FloatType >

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

inlinenoexcept

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

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

updateRamp()

template<typename FloatType >

void Bias< FloatType >::updateRamp ( )

inlineprivatenoexcept

References Bias< FloatType >::rampDurationSeconds, and LinearSmoothedValue< FloatType >::reset().

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

Member Data Documentation

bias

template<typename FloatType >

LinearSmoothedValue<FloatType> Bias< FloatType >::bias

private

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

rampDurationSeconds

template<typename FloatType >

double Bias< FloatType >::rampDurationSeconds = 0

private

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

sampleRate

template<typename FloatType >

double Bias< FloatType >::sampleRate = 0

private

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

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

• juce_Bias.h