dtmf

Documentation

Index

• Variables
• type DTMF
  • func New(lowFreq, highFreq []uint64, sampleRate, blockSize int, ...) *DTMF
  • func NewStandard(sampleRate, blockSize int) *DTMF
  • func (d *DTMF) Feed(samples []float32) (int, float32)

Variables

var (
	Keypad = []rune{
		'1', '2', '3', 'A',
		'4', '5', '6', 'B',
		'7', '8', '9', 'C',
		'*', '0', '#', 'D',
	}
	StdLowFreq  = []uint64{697, 770, 852, 941}
	StdHighFreq = []uint64{1209, 1336, 1477, 1633}
)

Types

type DTMF

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

func New

func New(lowFreq, highFreq []uint64, sampleRate, blockSize int, windowFunc func([]float32)) *DTMF

func NewStandard

func NewStandard(sampleRate, blockSize int) *DTMF

func (*DTMF) Feed

func (d *DTMF) Feed(samples []float32) (int, float32)

Return key number (lowFreqIndex * numHighFreq + highFreqIndex) and minimum magnitude