yes

main.go

@@ -15,7 +15,6 @@ import (
 	"xyosc/icons"
 	"xyosc/media"
 	"xyosc/particles"
-	"xyosc/signalprocessing"
 
 	"fmt"
 
@@ -27,7 +26,6 @@ import (
 	"github.com/hajimehoshi/ebiten/v2/vector"
 
 	"github.com/mjibson/go-dsp/fft"
-	"github.com/mjibson/go-dsp/window"
 )
 
 type Game struct {
@@ -101,7 +99,6 @@ func (g *Game) Draw(screen *ebiten.Image) {
 			binary.Read(audio.SampleRingBuffer, binary.NativeEndian, &AX)
 			binary.Read(audio.SampleRingBuffer, binary.NativeEndian, &AY)
 		}
-		window.Apply(FFTBuffer, signalprocessing.CachedWindowFunction)
 		X := fft.FFTReal(FFTBuffer)
 		r, θ := cmplx.Polar(X[1])
 		maxR := r
@@ -167,7 +164,6 @@ func main() {
 	audio.Init()
 	fonts.Init()
 	icons.Init()
-	signalprocessing.Init()
 	go audio.Start()
 	go media.Start()
 	ebiten.SetWindowIcon([]image.Image{icons.WindowIcon48, icons.WindowIcon32, icons.WindowIcon16})

signalprocessing/signalprocessing.go

@@ -1,18 +0,0 @@
-package signalprocessing
-
-import (
-	"xyosc/audio"
-	"xyosc/config"
-
-	"github.com/mjibson/go-dsp/window"
-)
-
-var HannWindow []float64
-
-func Init() {
-	HannWindow = window.Hann(int(config.Config.ReadBufferSize / audio.SampleSizeInBytes / 2))
-}
-
-func CachedWindowFunction(u int) []float64 {
-	return HannWindow
-}

vendor/github.com/mjibson/go-dsp/window/window.go

@@ -1,152 +0,0 @@
-/*
- * Copyright (c) 2012 Matt Jibson <matt.jibson@gmail.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-// Package window provides window functions for digital signal processing.
-package window
-
-import (
-	"math"
-)
-
-// Apply applies the window windowFunction to x.
-func Apply(x []float64, windowFunction func(int) []float64) {
-	for i, w := range windowFunction(len(x)) {
-		x[i] *= w
-	}
-}
-
-// Rectangular returns an L-point rectangular window (all values are 1).
-func Rectangular(L int) []float64 {
-	r := make([]float64, L)
-
-	for i := range r {
-		r[i] = 1
-	}
-
-	return r
-}
-
-// Hamming returns an L-point symmetric Hamming window.
-// Reference: http://www.mathworks.com/help/signal/ref/hamming.html
-func Hamming(L int) []float64 {
-	r := make([]float64, L)
-
-	if L == 1 {
-		r[0] = 1
-	} else {
-		N := L - 1
-		coef := math.Pi * 2 / float64(N)
-		for n := 0; n <= N; n++ {
-			r[n] = 0.54 - 0.46*math.Cos(coef*float64(n))
-		}
-	}
-
-	return r
-}
-
-// Hann returns an L-point Hann window.
-// Reference: http://www.mathworks.com/help/signal/ref/hann.html
-func Hann(L int) []float64 {
-	r := make([]float64, L)
-
-	if L == 1 {
-		r[0] = 1
-	} else {
-		N := L - 1
-		coef := 2 * math.Pi / float64(N)
-		for n := 0; n <= N; n++ {
-			r[n] = 0.5 * (1 - math.Cos(coef*float64(n)))
-		}
-	}
-
-	return r
-}
-
-// Bartlett returns an L-point Bartlett window.
-// Reference: http://www.mathworks.com/help/signal/ref/bartlett.html
-func Bartlett(L int) []float64 {
-	r := make([]float64, L)
-
-	if L == 1 {
-		r[0] = 1
-	} else {
-		N := L - 1
-		coef := 2 / float64(N)
-		n := 0
-		for ; n <= N/2; n++ {
-			r[n] = coef * float64(n)
-		}
-		for ; n <= N; n++ {
-			r[n] = 2 - coef*float64(n)
-		}
-	}
-
-	return r
-}
-
-// FlatTop returns an L-point flat top window.
-// Reference: http://www.mathworks.com/help/signal/ref/flattopwin.html
-func FlatTop(L int) []float64 {
-	const (
-		alpha0 = float64(0.21557895)
-		alpha1 = float64(0.41663158)
-		alpha2 = float64(0.277263158)
-		alpha3 = float64(0.083578947)
-		alpha4 = float64(0.006947368)
-	)
-
-	r := make([]float64, L)
-
-	if L == 1 {
-		r[0] = 1
-		return r
-	}
-
-	N := L - 1
-	coef := 2 * math.Pi / float64(N)
-
-	for n := 0; n <= N; n++ {
-		factor := float64(n) * coef
-
-		term0 := alpha0
-		term1 := alpha1 * math.Cos(factor)
-		term2 := alpha2 * math.Cos(2*factor)
-		term3 := alpha3 * math.Cos(3*factor)
-		term4 := alpha4 * math.Cos(4*factor)
-
-		r[n] = term0 - term1 + term2 - term3 + term4
-	}
-
-	return r
-}
-
-// Blackman returns an L-point Blackman window
-// Reference: http://www.mathworks.com/help/signal/ref/blackman.html
-func Blackman(L int) []float64 {
-	r := make([]float64, L)
-	if L == 1 {
-		r[0] = 1
-	} else {
-		N := L - 1
-		for n := 0; n <= N; n++ {
-			const term0 = 0.42
-			term1 := -0.5 * math.Cos(2*math.Pi*float64(n)/float64(N))
-			term2 := 0.08 * math.Cos(4*math.Pi*float64(n)/float64(N))
-			r[n] = term0 + term1 + term2
-		}
-	}
-	return r
-}

vendor/modules.txt

@@ -108,7 +108,6 @@ github.com/leberKleber/go-mpris
 ## explicit
 github.com/mjibson/go-dsp/dsputils
 github.com/mjibson/go-dsp/fft
-github.com/mjibson/go-dsp/window
 # github.com/smallnest/ringbuffer v0.0.0-20241129171057-356c688ba81d
 ## explicit; go 1.19
 github.com/smallnest/ringbuffer