Use Go 1.21 clear() function

compositors.go

@@ -102,9 +102,7 @@ func Mix(s ...Streamer) Streamer {
 			toStream := min(len(tmp), len(samples))
 
 			// clear the samples
-			for i := range samples[:toStream] {
-				samples[i] = [2]float64{}
-			}
+			clear(samples[:toStream])
 
 			snMax := 0 // max number of streamed samples in this iteration
 			for _, st := range s {

ctrl.go

@@ -35,9 +35,7 @@ func (c *Ctrl) Stream(samples [][2]float64) (n int, ok bool) {
 		return 0, false
 	}
 	if c.Paused {
-		for i := range samples {
-			samples[i] = [2]float64{}
-		}
+		clear(samples)
 		return len(samples), true
 	}
 	return c.Streamer.Stream(samples)

generators/silence.go

@@ -7,9 +7,7 @@ import "github.com/gopxl/beep"
 func Silence(num int) beep.Streamer {
 	if num < 0 {
 		return beep.StreamerFunc(func(samples [][2]float64) (m int, ok bool) {
-			for i := range samples {
-				samples[i] = [2]float64{}
-			}
+			clear(samples)
 			return len(samples), true
 		})
 	}
@@ -21,9 +19,7 @@ func Silence(num int) beep.Streamer {
 		if num < len(samples) {
 			samples = samples[:num]
 		}
-		for i := range samples {
-			samples[i] = [2]float64{}
-		}
+		clear(samples)
 		num -= len(samples)
 
 		return len(samples), true

mixer.go

@@ -30,9 +30,7 @@ func (m *Mixer) Stream(samples [][2]float64) (n int, ok bool) {
 		toStream := min(len(tmp), len(samples))
 
 		// clear the samples
-		for i := range samples[:toStream] {
-			samples[i] = [2]float64{}
-		}
+		clear(samples[:toStream])
 
 		for si := 0; si < len(m.streamers); si++ {
 			// mix the stream

streamers.go

@@ -12,9 +12,7 @@ func Silence(num int) Streamer {
 		if 0 < num && num < len(samples) {
 			samples = samples[:num]
 		}
-		for i := range samples {
-			samples[i] = [2]float64{}
-		}
+		clear(samples)
 		if num > 0 {
 			num -= len(samples)
 		}