fix(PrevDroppedPackets): use float division and round-off

Author: anunaym14

pcm.go

@@ -19,6 +19,7 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
+	"math"
 	"slices"
 	"sync"
 	"time"
@@ -206,7 +207,7 @@ func (w *sampleWriter[T]) WriteSample(in T) error {
 		timeSinceLastWrite := time.Since(w.lastWrite)
 		tolerance := w.sampleDur / 10
 		if timeSinceLastWrite > w.sampleDur+tolerance {
-			droppedPackets = uint16((timeSinceLastWrite - w.sampleDur) / w.sampleDur)
+			droppedPackets = uint16(math.Round(float64(timeSinceLastWrite-w.sampleDur) / float64(w.sampleDur)))
 		}
 	}