diff --git a/cmd/adpcm/decode-pcm/decode-pcm.go b/cmd/adpcm/decode-pcm/decode-pcm.go
index 45a27f90..f664141f 100644
--- a/cmd/adpcm/decode-pcm/decode-pcm.go
+++ b/cmd/adpcm/decode-pcm/decode-pcm.go
@@ -54,7 +54,7 @@ func main() {
 
 	// decode adpcm
 	inBSize := 256
-	numBlocks := int(len(comp) / inBSize)
+	numBlocks := len(comp) / inBSize
 	outBSize := 2 + (inBSize-4)*4 // 2 bytes are copied, 2 are used as block header info, the remaining bytes are decompressed 1:4
 	decoded := make([]byte, 0, outBSize*numBlocks)
 	for i := 0; i < numBlocks; i++ {
diff --git a/cmd/adpcm/encode-pcm/encode-pcm.go b/cmd/adpcm/encode-pcm/encode-pcm.go
index a014ef53..8da0aa77 100644
--- a/cmd/adpcm/encode-pcm/encode-pcm.go
+++ b/cmd/adpcm/encode-pcm/encode-pcm.go
@@ -54,8 +54,8 @@ func main() {
 
 	//encode adpcm
 	inBSize := 1010
-	numBlocks := int(len(pcm) / inBSize)
-	outBSize := int(float32(inBSize/4) + float32(3.5)) // compression is 4:1 and 3.5 bytes of info are added to each block
+	numBlocks := len(pcm) / inBSize
+	outBSize := int(float64(inBSize)/4 + 3.5) // compression is 4:1 and 3.5 bytes of info are added to each block
 	comp := make([]byte, 0, outBSize*numBlocks)
 	for i := 0; i < numBlocks; i++ {
 		block := pcm[inBSize*i : inBSize*(i+1)]
diff --git a/stream/adpcm/adpcm_test.go b/stream/adpcm/adpcm_test.go
index e9cb05aa..5e991ddc 100644
--- a/stream/adpcm/adpcm_test.go
+++ b/stream/adpcm/adpcm_test.go
@@ -45,8 +45,8 @@ func TestEncodeBlock(t *testing.T) {
 
 	//encode adpcm
 	inBSize := 1010
-	numBlocks := int(len(pcm) / inBSize)
-	outBSize := int(float32(inBSize/4) + float32(3.5)) // compression is 4:1 and 3.5 bytes of info are added to each block
+	numBlocks := len(pcm) / inBSize
+	outBSize := int(float64(inBSize)/4 + 3.5) // compression is 4:1 and 3.5 bytes of info are added to each block
 	comp := make([]byte, 0, outBSize*numBlocks)
 	for i := 0; i < numBlocks; i++ {
 		block := pcm[inBSize*i : inBSize*(i+1)]
@@ -79,7 +79,7 @@ func TestDecodeBlock(t *testing.T) {
 
 	//decode adpcm
 	inBSize := 256
-	numBlocks := int(len(comp) / inBSize)
+	numBlocks := len(comp) / inBSize
 	outBSize := 2 + (inBSize-4)*4 // 2 bytes are copied, 2 are used as block header info, the remaining bytes are decompressed 1:4
 	decoded := make([]byte, 0, outBSize*numBlocks)
 	for i := 0; i < numBlocks; i++ {