/
main.go
78 lines (68 loc) · 1.72 KB
/
main.go
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package main
import (
"fmt"
"github.com/gonum/floats"
"github.com/takuyaohashi/go-wav"
"github.com/tetsuzawa/converter"
"github.com/tetsuzawa/go-research/adflib/fdadf"
"log"
"os"
"reflect"
)
const (
mu = 0.000000000000000001
FramesPerBuffer = 1024
order = 8
eps = 1e-5
)
var af, _ = fdadf.NewFiltFBLMS(FramesPerBuffer, mu, "zeros")
func main() {
f1, err := os.Open(os.Args[1])
check(err)
r1, err := wav.NewReader(f1)
check(err)
data1, err := r1.ReadSamples(int(r1.GetSubChunkSize()) / int(r1.GetNumChannels()) / int(r1.GetBitsPerSample()) * 8)
check(err)
if reflect.TypeOf(data1) != reflect.TypeOf([]int16{0,}) {
log.Fatalln(err)
}
val1, ok := data1.([]int16)
if !ok {
log.Fatalln("Data type is not valid")
}
valf1 := converter.Int16sToFloat64s(val1)
af, err := fdadf.NewFiltFBLMS(FramesPerBuffer, mu, "zeros")
check(err)
rvalf1 := reshape(valf1, len(valf1)/FramesPerBuffer, FramesPerBuffer)
es, mus, err := fdadf.ExploreLearning(af, rvalf1, rvalf1, 0.00001, 1.0, 100, 0.5, 100, "MSE", nil)
check(err)
res := make(map[float64]float64, len(es))
for i := 0; i < len(es); i++ {
res[es[i]] = mus[i]
}
for i := 0; i < len(es); i++ {
fmt.Println(es[i], mus[i])
}
eMin := floats.Min(es)
fmt.Printf("the step size mu with the smallest error is %.3f\n", res[eMin])
}
func check(err error) {
if err != nil {
panic(err)
}
}
func reshape(fs []float64, r, c int) [][]float64 {
if len(fs) != r*c {
panic(fmt.Sprintf("the length of fs is invalid. got: %d, want: %d", len(fs), r*c))
}
var fs2d = make([][]float64, r)
for i := range fs2d {
fs2d[i] = make([]float64, c)
}
for i := 0; i < r; i++ {
for j := 0; j < c; j++ {
fs2d[i][j] = fs[i*r+j]
}
}
return fs2d
}