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filter: xy-ms conv

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minjaesong
2023-11-24 01:21:06 +09:00
parent 402b0a8414
commit b16a6ced93
1 changed files with 26 additions and 0 deletions
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26
src/net/torvald/terrarum/audio/TerrarumAudioFilter.kt
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@@ -286,3 +286,29 @@ class Reverb(val delayMS: Float, var decay: Float, var lowpass: Float): Terrarum
}
}
}
object XYtoMS: TerrarumAudioFilter() {
override fun thru(inbuf0: List<FloatArray>, inbuf1: List<FloatArray>, outbuf0: List<FloatArray>, outbuf1: List<FloatArray>) {
for (i in 0 until BUFFER_SIZE / 4) {
val X = inbuf1[0][i]
val Y = inbuf1[1][i]
val M = (X + Y) / 2f
val S = (X - Y) / 2f
outbuf1[0][i] = M
outbuf1[1][i] = S
}
}
}
object MStoXY: TerrarumAudioFilter() {
override fun thru(inbuf0: List<FloatArray>, inbuf1: List<FloatArray>, outbuf0: List<FloatArray>, outbuf1: List<FloatArray>) {
for (i in 0 until BUFFER_SIZE / 4) {
val M = inbuf1[0][i]
val S = inbuf1[1][i]
val X = M + S
val Y = M - S
outbuf1[0][i] = X
outbuf1[1][i] = Y
}
}
}