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wip(vad)

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Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
This commit is contained in:
Ettore Di Giacinto 2024-11-15 21:49:14 +01:00
parent 59531562a6
commit 136fbd25f5
4 changed files with 86 additions and 19 deletions
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8
pkg/sound/float32.go
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@ -5,14 +5,6 @@ import (
"math"
)
func BytesToFloat32Array(aBytes []byte) []float32 {
aArr := make([]float32, 3)
for i := 0; i < 3; i++ {
aArr[i] = BytesFloat32(aBytes[i*4:])
}
return aArr
}
func BytesFloat32(bytes []byte) float32 {
bits := binary.LittleEndian.Uint32(bytes)
float := math.Float32frombits(bits)

13
pkg/sound/int16.go
View file

@ -1,5 +1,7 @@
package sound
import "math"
/*
MIT License
@ -8,6 +10,17 @@ Copyright (c) 2024 Xbozon
*/
// calculateRMS16 calculates the root mean square of the audio buffer for int16 samples.
func CalculateRMS16(buffer []int16) float64 {
var sumSquares float64
for _, sample := range buffer {
val := float64(sample) // Convert int16 to float64 for calculation
sumSquares += val * val
}
meanSquares := sumSquares / float64(len(buffer))
return math.Sqrt(meanSquares)
}
func ResampleInt16(input []int16, inputRate, outputRate int) []int16 {
// Calculate the resampling ratio
ratio := float64(inputRate) / float64(outputRate)