dsp

Documentation

Index

• func AmplitudeMulti(spectrum []complex128) float64
• func AmplitudeSingle(fft complex128) float64
• func ApplyWeightFilter(fftSignal []complex128, sampleRate float64)
• func FrequencyRangeIndexes(fft []complex128, sampleRate ears.SampleRate, fromHz, toHz uint16) (int, int)
• type ExpFilter
  • func NewExpFilter(value, alphaDecay, alphaRise float64) *ExpFilter
  • func (e *ExpFilter) Update(newValue float64) float64

Functions

func AmplitudeMulti

func AmplitudeMulti(spectrum []complex128) float64

Calculate the sum of amplitudes for all elements in the spectrum.

func AmplitudeSingle

func AmplitudeSingle(fft complex128) float64

Return the amplitude of a single element in the FFT spectrum.

func ApplyWeightFilter

func ApplyWeightFilter(fftSignal []complex128, sampleRate float64)

ApplyWeightFilter применяет весовой фильтр к сигналу FFT

func FrequencyRangeIndexes

func FrequencyRangeIndexes(fft []complex128, sampleRate ears.SampleRate, fromHz, toHz uint16) (int, int)

Types

type ExpFilter

type ExpFilter struct {
	Value, AlphaDecay, AlphaRise float64
}

func NewExpFilter

func NewExpFilter(value, alphaDecay, alphaRise float64) *ExpFilter

func (*ExpFilter) Update

func (e *ExpFilter) Update(newValue float64) float64