Inverse short time fourier transform using gossp

istft.go

package main

import (
	"flag"
	"fmt"
	"github.com/r9y9/gossp/io"
	"github.com/r9y9/gossp/stft"
	"github.com/r9y9/gossp/window"
	"log"
)

func main() {
	filename := flag.String("i", "input.wav", "Input filename")
	flag.Parse()

	w, werr := io.ReadWav(*filename)
	if werr != nil {
		log.Fatal(werr)
	}
	data := w.GetMonoData()

	s := &stft.STFT{
		FrameShift: int(float64(w.SampleRate) / 100.0), // 0.01 sec,
		FrameLen:   2048,
		Window:     window.CreateHanning(2048),
	}

	reconstructed := s.ISTFT(s.STFT(data))

	for i := range data {
		fmt.Println(data[i], reconstructed[i])
	}
}