wav

Documentation

Overview

Package wav provides support for the WAV file format.

Supported formats are PCM 8- and 16-bit, and IEEE float. Extended chunks (JUNK, bext, and others added by tools like ProTools) are ignored.

Index

• type Header
• type Wav
  • func New(r io.Reader) (*Wav, error)
  • func (w *Wav) ReadFloats(n int) ([]float32, error)
  • func (w *Wav) ReadSamples(n int) (interface{}, error)

Types

type Header

type Header struct {
	AudioFormat   uint16
	NumChannels   uint16
	SampleRate    uint32
	ByteRate      uint32
	BlockAlign    uint16
	BitsPerSample uint16
}

Header contains Wav fmt chunk data.

type Wav

type Wav struct {
	Header
	// Samples is the total number of available samples.
	Samples int
	// Duration is the estimated duration based on reported samples.
	Duration time.Duration
	// contains filtered or unexported fields
}

Wav reads wav files.

func New

func New(r io.Reader) (*Wav, error)

New reads the WAV header from r.

func (*Wav) ReadFloats

func (w *Wav) ReadFloats(n int) ([]float32, error)

ReadFloats is like ReadSamples, but it converts any underlying data to a float32.

func (*Wav) ReadSamples

func (w *Wav) ReadSamples(n int) (interface{}, error)

ReadSamples returns a [n]T, where T is uint8, int16, or float32, based on the wav data. n is the number of samples to return.