frequency_bin_mapper.h File Reference

#include "fl/stl/int.h"
#include "fl/stl/vector.h"
#include "fl/stl/span.h"
#include "fl/stl/noexcept.h"

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Classes
class	fl::audio::FrequencyBinMapper
	FrequencyBinMapper maps FFT output bins to perceptually-spaced frequency channels. More...
struct	fl::audio::FrequencyBinMapper::BinMapping
	Mapping from output bins to FFT bin ranges Each entry contains (startBin, endBin) for averaging. More...
struct	fl::audio::FrequencyBinMapper::FrequencyRange
	Get frequency boundaries for a specific output bin. More...
struct	fl::audio::FrequencyBinMapper::Stats
	Get statistics (for debugging/monitoring) More...
struct	fl::audio::FrequencyBinMapperConfig
	Configuration for frequency bin mapping. More...

Namespaces
namespace	fl
	Base definition for an LED controller.
namespace	fl::audio

Enumerations
enum class	fl::audio::FrequencyBinMode { fl::audio::Bins16 = 16 , fl::audio::Bins32 = 32 }
	Frequency bin mode - controls number of output bins. More...

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Class Documentation

fl::audio::FrequencyBinMapper::BinMapping

struct fl::audio::FrequencyBinMapper::BinMapping

Class Members
u32	endBin
u32	startBin

fl::audio::FrequencyBinMapper::FrequencyRange

struct fl::audio::FrequencyBinMapper::FrequencyRange

Class Members
float	maxFreq
float	minFreq

fl::audio::FrequencyBinMapper::Stats

struct fl::audio::FrequencyBinMapper::Stats

Class Members
u32	binMappingCount = 0
u32	lastFFTBinsUsed = 0
float	maxMagnitude = 0.0f

fl::audio::FrequencyBinMapperConfig

struct fl::audio::FrequencyBinMapperConfig

Class Members
u32	fftBinCount = 256	Number of FFT bins available from FFT output For 512-sample FFT at 22050 Hz: 256 bins (512/2)
float	maxFrequency = 16000.0f	Maximum frequency (Hz) - default 16000 Hz (treble)
float	minFrequency = 20.0f	Minimum frequency (Hz) - default 20 Hz (bass)
FrequencyBinMode	mode = FrequencyBinMode::Bins16	Number of output frequency bins (16 or 32)
u32	sampleRate = 22050	Sample rate (Hz) - must match FFT sample rate.
bool	useLogSpacing = true	Use logarithmic spacing (recommended for audio) Logarithmic spacing provides better bass/mid/treble separation.