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more musicplayer things

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This commit is contained in:
minjaesong
2023-12-28 15:59:33 +09:00
parent fa915d63d2
commit 3e7434a9c6
5 changed files with 59 additions and 52 deletions
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7
src/net/torvald/terrarum/audio/AudioMixer.kt
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@@ -177,7 +177,10 @@ object AudioMixer: Disposable {
masterTrack.filters[0] = SoftClp
masterTrack.filters[1] = Buffer
masterTrack.filters[2] = Spectro()
masterTrack.filters[3] = Vecto()
masterTrack.filters[3] = Vecto(2f)
musicTrack.filters[1] = Spectro()
ambientTrack.filters[1] = Spectro()
listOf(sumBus, convolveBusOpen, convolveBusCave).forEach {
it.addSidechainInput(musicTrack, 1.0)
@@ -201,7 +204,7 @@ object AudioMixer: Disposable {
masterTrack.addSidechainInput(fadeBus, 1.0)
masterTrack.addSidechainInput(guiTrack, 1.0)
musicTrack.filters[1] = Gain(0.5f)
musicTrack.filters[3] = Gain(0.5f)
dynamicTracks.forEach {
it.filters[0] = BinoPan(0f)

12
src/net/torvald/terrarum/audio/dsp/Spectro.kt
View File

@@ -11,7 +11,7 @@ import net.torvald.terrarum.ui.BasicDebugInfoWindow.Companion.STRIP_W
import net.torvald.terrarum.ui.Toolkit
import kotlin.math.*
class Spectro : TerrarumAudioFilter() {
class Spectro(val gain: Float = 1f) : TerrarumAudioFilter() {
private val FFTSIZE = 1024
private val inBuf = Array(2) { FloatArray(FFTSIZE) }
@@ -51,7 +51,7 @@ class Spectro : TerrarumAudioFilter() {
push(inbuf[0], inBuf[0])
push(inbuf[1], inBuf[1])
for (i in 0 until FFTSIZE) {
chsum.reim[2*i] = ((inBuf[0][i] + inBuf[1][i]) / 2f) * fftWin[i]
chsum.reim[2*i] = ((inBuf[0][i] + inBuf[1][i]) / 2f) * fftWin[i] * gain
}
// do fft
@@ -74,7 +74,7 @@ class Spectro : TerrarumAudioFilter() {
for (bin in 0 until FFTSIZE / 2) {
val freqL = (SAMPLING_RATED / FFTSIZE) * bin
val freqR = (SAMPLING_RATED / FFTSIZE) * (bin + 1)
val magn0 = fftOut.reim[2 * bin].absoluteValue / FFTSIZE * (freqR / 10.0) // apply slope
val magn0 = fftOut.reim[2 * bin].absoluteValue / FFTSIZE * (freqR / 20.0) // apply slope
val magn = FastMath.interpolateLinear(BasicDebugInfoWindow.FFT_SMOOTHING_FACTOR, magn0, oldFFTmagn[bin])
val magnLog = fullscaleToDecibels(magn)
@@ -94,7 +94,7 @@ class Spectro : TerrarumAudioFilter() {
}
class Vecto : TerrarumAudioFilter() {
class Vecto(val gain: Float = 1f) : TerrarumAudioFilter() {
val backbufL = Array((6144f / AUDIO_BUFFER_SIZE).roundToInt().coerceAtLeast(1)) {
FloatArray(AUDIO_BUFFER_SIZE)
}
@@ -115,8 +115,8 @@ class Vecto : TerrarumAudioFilter() {
// plot dots
for (i in 0 until TerrarumAudioMixerTrack.AUDIO_BUFFER_SIZE) {
val y0 = +inbuf[0][i] * 2f
val x0 = -inbuf[1][i] * 2f// rotate the domain by -90 deg
val y0 = +inbuf[0][i] * gain
val x0 = -inbuf[1][i] * gain// rotate the domain by -90 deg
val x = (+x0*sqrt2p -y0*sqrt2p) * 1.4142
val y = (-x0*sqrt2p -y0*sqrt2p) * 1.4142 // further rotate by -45 deg then flip along the y axis