JUCE  v5.4.1-191-g0ab5e696f
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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
 
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 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 ;).

{DSP}

Constructor & Destructor Documentation

◆ Bias()

template<typename FloatType >
juce::dsp::Bias< FloatType >::Bias ( )
inlinenoexcept

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.

◆ getRampDurationSeconds()

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

◆ prepare()

template<typename FloatType >
void juce::dsp::Bias< FloatType >::prepare ( const ProcessSpec spec)
inlinenoexcept

◆ 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::FloatVectorOperations::add(), juce::dsp::Bias< FloatType >::bias, and jassert.

◆ processSample()

template<typename FloatType >
template<typename SampleType >
SampleType juce::dsp::Bias< FloatType >::processSample ( SampleType  inputSample) const
inlinenoexcept

Returns the result of processing a single sample.

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

◆ reset()

template<typename FloatType >
void juce::dsp::Bias< FloatType >::reset ( )
inlinenoexcept

◆ setBias()

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

Sets the DC bias.

Parameters
newBiasDC offset in range [-1, 1]

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

◆ 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()

Member Data Documentation

◆ bias

◆ rampDurationSeconds

◆ sampleRate

template<typename FloatType >
double juce::dsp::Bias< FloatType >::sampleRate = 0
private

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