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

#include <juce_LogRampedValue.h>

Inheritance diagram for juce::dsp::LogRampedValue< FloatType >:

Public Member Functions
	LogRampedValue ()=default
	LogRampedValue (FloatType initialValue) noexcept
void	setLogParameters (FloatType midPointAmplitudedB, bool rateOfChangeShouldIncrease) noexcept
void	reset (double sampleRate, double rampLengthInSeconds) noexcept
void	reset (int numSteps) noexcept
void	setTargetValue (FloatType newValue) noexcept
FloatType	getNextValue () noexcept
FloatType	skip (int numSamples) noexcept
Public Member Functions inherited from juce::SmoothedValueBase< LogRampedValue< FloatType > >
	SmoothedValueBase ()=default
bool	isSmoothing () const noexcept
FloatType	getCurrentValue () const noexcept
FloatType	getTargetValue () const noexcept
void	setCurrentAndTargetValue (FloatType newValue)
void	applyGain (FloatType *samples, int numSamples) noexcept

Private Member Functions
void	updateRampParameters ()

Private Attributes
bool	increasingRateOfChange = true
FloatType	B = Decibels::decibelsToGain ((FloatType) -40)
int	stepsToTarget = 0
FloatType	temp = 0
FloatType	source = 0
FloatType	r = 0
FloatType	d = 1

Additional Inherited Members
Public Types inherited from juce::SmoothedValueBase< LogRampedValue< FloatType > >
using	FloatType
Protected Attributes inherited from juce::SmoothedValueBase< LogRampedValue< FloatType > >
FloatType	currentValue
FloatType	target
int	countdown

Detailed Description

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

Utility class for logarithmically smoothed linear values.

Logarithmically smoothed values can be more relevant than linear ones for specific cases such as algorithm change smoothing, using two of them in opposite directions.

The gradient of the logarithmic/exponential slope can be configured by calling LogRampedValue::setLogParameters.

See also

SmoothedValue

@tags{DSP}

Constructor & Destructor Documentation

LogRampedValue() [1/2]

template<typename FloatType>

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

default

Constructor.

LogRampedValue() [2/2]

template<typename FloatType>

juce::dsp::LogRampedValue< FloatType >::LogRampedValue ( FloatType initialValue )

inlinenoexcept

Constructor.

Member Function Documentation

getNextValue()

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::getNextValue ( )

inlinenoexcept

Compute the next value.

Returns

Smoothed value

reset() [1/2]

template<typename FloatType>

void juce::dsp::LogRampedValue< FloatType >::reset ( double sampleRate, double rampLengthInSeconds )

inlinenoexcept

Reset to a new sample rate and ramp length.

Parameters

sampleRate	The sample rate
rampLengthInSeconds	The duration of the ramp in seconds

reset() [2/2]

template<typename FloatType>

void juce::dsp::LogRampedValue< FloatType >::reset ( int numSteps )

inlinenoexcept

Set a new ramp length directly in samples.

Parameters

numSteps

The number of samples over which the ramp should be active

setLogParameters()

template<typename FloatType>

void juce::dsp::LogRampedValue< FloatType >::setLogParameters ( FloatType midPointAmplitudedB, bool rateOfChangeShouldIncrease )

inlinenoexcept

Sets the behaviour of the log ramp.

Parameters

midPointAmplitudedB	Sets the amplitude of the mid point in decibels, with the target value at 0 dB and the initial value at -inf dB
rateOfChangeShouldIncrease	If true then the ramp starts shallow and gets progressively steeper, if false then the ramp is initially steep and flattens out as you approach the target value

setTargetValue()

template<typename FloatType>

void juce::dsp::LogRampedValue< FloatType >::setTargetValue ( FloatType newValue )

inlinenoexcept

Set a new target value.

Parameters

newValue

The new target value

skip()

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::skip ( int numSamples )

inlinenoexcept

Skip the next numSamples samples.

This is identical to calling getNextValue numSamples times.

See also

getNextValue

updateRampParameters()

template<typename FloatType>

void juce::dsp::LogRampedValue< FloatType >::updateRampParameters ( )

inlineprivate

Member Data Documentation

B

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::B = Decibels::decibelsToGain ((FloatType) -40)

private

d

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::d = 1

private

increasingRateOfChange

template<typename FloatType>

bool juce::dsp::LogRampedValue< FloatType >::increasingRateOfChange = true

private

r

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::r = 0

private

source

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::source = 0

private

stepsToTarget

template<typename FloatType>

int juce::dsp::LogRampedValue< FloatType >::stepsToTarget = 0

private

temp

template<typename FloatType>

FloatType juce::dsp::LogRampedValue< FloatType >::temp = 0

private

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

• /home/runner/work/lmms-fork/lmms-fork/plugins/CarlaBase/carla/source/modules/juce_dsp/maths/juce_LogRampedValue.h