dft

Documentation

Index

• func Analyze(srate float64, floatVals []float64, scaling transform.Scaling) *freqresponse.FreqResponse
• func DFT(vals []complex128, scaling transform.Scaling) ([]complex128, error)

Functions

func Analyze

func Analyze(
	srate float64, floatVals []float64, scaling transform.Scaling) *freqresponse.FreqResponse

Analyze runs transform.AnalyzeTimeFreqTransform with the DFT transform. Before running the DFT, the float values will be converted to complex numbers and then (if needed) padded with a zero to make an even length.

func DFT

func DFT(vals []complex128, scaling transform.Scaling) ([]complex128, error)

DFT transform. Can be used for both forward (anaysis) and inverse (synthesis) transform by selecting appropriate scaling. Returns non-nil error if input size is not even.