fft

Documentation

Index

• func Raw_FFT(x []float64, y []complex128)
• func Raw_iFFT(x []complex128, y []complex128)
• type DCT4
  • func (d *DCT4) Decode(x []float64, y []float64)
  • func (d *DCT4) Encode(x []float64, y []float64)
• type MDCT
  • func (m *MDCT) DecodeHalfBlock(src, dst []float64)
  • func (m *MDCT) EncodeHalfBlock(src []float64) []float64
  • func (m *MDCT) Init(bz int)

Functions

func Raw_FFT

func Raw_FFT(x []float64, y []complex128)

func Raw_iFFT

func Raw_iFFT(x []complex128, y []complex128)

Types

type DCT4

type DCT4 struct {
	// contains filtered or unexported fields
}

A Discrete Cosine transform.

func (*DCT4) Decode

func (d *DCT4) Decode(x []float64, y []float64)

func (*DCT4) Encode

func (d *DCT4) Encode(x []float64, y []float64)

type MDCT

type MDCT struct {
	DCT        DCT4
	Half, Full int
	Prev       []float64
	Inpt       []float64
	Temp       []float64
	Outp       []float64
}

A Modified Discrete Cosine Transform.

An instance must not be used for encoding and decoding Simultaneously!

func (*MDCT) DecodeHalfBlock

func (m *MDCT) DecodeHalfBlock(src, dst []float64)

func (*MDCT) EncodeHalfBlock

func (m *MDCT) EncodeHalfBlock(src []float64) []float64

func (*MDCT) Init

func (m *MDCT) Init(bz int)