go-dsp is a digital signal processing package for the Go programming language.

• dsputils - utilities and data structures for DSP
• fft - fast Fourier transform
• spectral - power spectral density functions (e.g., Pwelch)
• wav - wav file reader functions
• window - window functions (e.g., Hamming, Hann, Bartlett)

$ go get github.com/mjibson/go-dsp/fft

package main

import (
        "fmt"
        
        "github.com/mjibson/go-dsp/fft"
)

func main() {
        fmt.Println(fft.FFTReal([]float64 {1, 2, 3}))
}