mel

Documentation

Index

• Variables
• func ISTFT(s *stft.STFT, spectrogram [][]complex128, numIterations int) []float64
• func LoadFlac(inputFile string) []float64
• func LoadWav(inputFile string) []float64
• func SaveWav(outputFile string, vec []float64, sr int) error
• type Mel
  • func NewMel() *Mel
  • func (m *Mel) FromMel(ospectrum [][2]float64) ([]float64, error)
  • func (m *Mel) Image(buf [][2]float64) []uint16
  • func (m *Mel) ToMel(buf []float64) ([][2]float64, error)
  • func (m *Mel) ToMelFlac(inputFile, outputFile string) error
  • func (m *Mel) ToMelWav(inputFile, outputFile string) error
  • func (m *Mel) ToWavPng(inputFile, outputFile string) error

Variables

var ErrFileNotLoaded = errors.New("wavNotLoaded")

Functions

func ISTFT

func ISTFT(s *stft.STFT, spectrogram [][]complex128, numIterations int) []float64

func LoadFlac

func LoadFlac(inputFile string) []float64

LoadFlac loads mono flac file to sample vector

func LoadWav

func LoadWav(inputFile string) []float64

LoadWav loads mono wav file to sample vector

func SaveWav

func SaveWav(outputFile string, vec []float64, sr int) error

SaveWav saves mono wav file from sample vector

Types

type Mel

type Mel struct {
	NumMels  int
	MelFmin  float64
	MelFmax  float64
	TuneMul  float64
	TuneAdd  float64
	Window   int
	Resolut  int
	YReverse bool

	GriffinLimIterations int

	// VolumeBoost when loading spectrogram from image, can be a value like 1.666
	VolumeBoost float64

	// sample rate for output wav
	SampleRate int
}

Mel represents the configuration for generating mel spectrograms.

func NewMel

func NewMel() *Mel

NewMel creates a new Mel instance with default values.

func (*Mel) FromMel

func (m *Mel) FromMel(ospectrum [][2]float64) ([]float64, error)

FromMel generates a wave buffer from a mel spectrogram and returns the wave buffer.

func (*Mel) Image

func (m *Mel) Image(buf [][2]float64) []uint16

func (*Mel) ToMel

func (m *Mel) ToMel(buf []float64) ([][2]float64, error)

ToMel generates a mel spectrogram from a wave buffer and returns the mel buffer.

func (*Mel) ToMelFlac

func (m *Mel) ToMelFlac(inputFile, outputFile string) error

ToMel generates a mel spectrogram from an input FLAC audio file and saves it as a PNG image.

func (*Mel) ToMelWav

func (m *Mel) ToMelWav(inputFile, outputFile string) error

ToMel generates a mel spectrogram from an input WAV audio file and saves it as a PNG image.

func (*Mel) ToWavPng

func (m *Mel) ToWavPng(inputFile, outputFile string) error