Detailed Description

WLED-style equalizer detector that provides a 16-bin frequency spectrum normalized to 0.0-1.0, plus convenience bass/mid/treble/volume getters.

Unlike FrequencyBands (which gives raw float band energies), this detector outputs pre-normalized values suitable for direct LED mapping.

Usage:

// Via Processor (recommended):
audio->onEqualizer([](const Equalizer& eq) {
    float bass = eq.bass;        // 0.0-1.0
    float bin5 = eq.bins[5];     // 0.0-1.0
});
 
// Or polling:
float bass = audio.getEqBass();  // 0.0-1.0

Definition at line 83 of file equalizer.h.

#include <equalizer.h>

Inheritance diagram for fl::audio::detector::EqualizerDetector:

Collaboration diagram for fl::audio::detector::EqualizerDetector:

Public Member Functions
	EqualizerDetector () FL_NOEXCEPT

	~EqualizerDetector () FL_NOEXCEPT override

void	configure (const EqualizerConfig &config)
	Reconfigure equalizer tuning parameters at runtime.

void	fireCallbacks () override

float	getAutoGain () const

float	getBass () const

float	getBin (int index) const

const float *	getBins () const

float	getDominantFreqHz () const

float	getDominantMagnitude () const

bool	getIsSilence () const

float	getMid () const

const char *	getName () const override

float	getTreble () const

float	getVolume () const

float	getVolumeDb () const

float	getVolumeNormFactor () const

float	getZcf () const

bool	needsFFT () const override

void	reset () override

void	setMicProfile (MicProfile profile)
	Set microphone correction profile (propagated from Processor).

void	setSampleRate (int rate) override

void	update (shared_ptr< Context > context) override

Public Member Functions inherited from fl::audio::Detector
virtual	~Detector () FL_NOEXCEPT=default

virtual bool	needsFFTHistory () const FL_NOEXCEPT

Public Attributes
function_list< void(const Equalizer &)>	onEqualizer

Static Public Attributes
static constexpr int	kNumBins = 16

Private Member Functions
void	computeBinCenters (float *out) const

void	recomputePinkNoiseGains ()

Private Attributes
float	mBass = 0

vector< AttackDecayFilter< float > >	mBinMaxFilters

vector< AttackDecayFilter< float > >	mBinOutputFilters

float	mBins [kNumBins] = {}

vector< ExponentialSmoother< float > >	mBinSmoothers

EqualizerConfig	mConfig

MicProfile	mCurrentMicProfile = MicProfile::None

float	mDominantFreqHz = 0.0f

float	mDominantMagnitude = 0.0f

float	mEqBuffer [kNumBins] = {}

float	mGain = 1.0f

bool	mHasMicCorrection = false

bool	mIsSilence = false

float	mMicGains [kNumBins] = {}

float	mMid = 0

float	mPinkNoiseGains [kNumBins] = {}

shared_ptr< const fft::Bins >	mRetainedFFT

int	mSampleRate = 44100

SpectralEqualizer	mSpectralEq

float	mTreble = 0

bool	mUseAttackDecaySmoothing = false

float	mVolume = 0

float	mVolumeDb = -100.0f

AttackDecayFilter< float >	mVolumeMax {0.001f, 4.0f, 0.0f}

float	mVolumeNormFactor = 1.0f

float	mZcf = 0

Static Private Attributes
static constexpr float	kFFTDownscale = 0.40f

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

fl/audio/detector/equalizer.h
fl/audio/detector/equalizer.cpp.hpp

Detailed Description

Public Member Functions

Public Attributes

Static Public Attributes

Private Member Functions

Private Attributes

Static Private Attributes