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speed of sound moved to the mixer

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This commit is contained in:
minjaesong
2023-11-23 19:54:37 +09:00
parent 7cef8e0df4
commit c8a891c164
3 changed files with 9 additions and 3 deletions
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5
src/net/torvald/terrarum/audio/AudioMixer.kt
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@@ -20,6 +20,11 @@ import kotlin.math.*
* Created by minjaesong on 2023-11-07.
*/
object AudioMixer: Disposable {
var SPEED_OF_SOUND = 340f
const val SPEED_OF_SOUND_AIR = 340f
const val SPEED_OF_SOUND_WATER = 1480f
const val DEFAULT_FADEOUT_LEN = 1.8
val masterVolume: Double

5
src/net/torvald/terrarum/audio/TerrarumAudioFilter.kt
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@@ -2,6 +2,7 @@ package net.torvald.terrarum.audio
import com.jme3.math.FastMath
import com.jme3.math.FastMath.sin
import net.torvald.terrarum.audio.AudioMixer.SPEED_OF_SOUND
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.BUFFER_SIZE
import net.torvald.terrarum.audio.TerrarumAudioMixerTrack.Companion.SAMPLING_RATEF
import kotlin.math.absoluteValue
@@ -187,7 +188,7 @@ object Buffer : TerrarumAudioFilter() {
* @param soundSpeed speed of the sound in meters per seconds
* @param earDist distance between ears in meters
*/
class BinoPan(var pan: Float, var soundSpeed: Float = 340f, var earDist: Float = 0.18f): TerrarumAudioFilter() {
class BinoPan(var pan: Float, var earDist: Float = 0.18f): TerrarumAudioFilter() {
private val PANNING_CONST = 3.0 // 3dB panning rule
@@ -203,7 +204,7 @@ class BinoPan(var pan: Float, var soundSpeed: Float = 340f, var earDist: Float =
override fun thru(inbuf0: List<FloatArray>, inbuf1: List<FloatArray>, outbuf0: List<FloatArray>, outbuf1: List<FloatArray>
) {
val angle = pan * 1.5707963f
val timeDiffMax = earDist / soundSpeed * SAMPLING_RATEF
val timeDiffMax = earDist / SPEED_OF_SOUND * SAMPLING_RATEF
val delayInSamples = (timeDiffMax * sin(angle)).absoluteValue
val volMultDbThis = PANNING_CONST * pan.absoluteValue
val volMultFsThis = decibelsToFullscale(volMultDbThis).toFloat()