diff --git a/firmware/sender.ino b/firmware/sender.ino
index cd6e203..0145642 100644
--- a/firmware/sender.ino
+++ b/firmware/sender.ino
@@ -53,8 +53,8 @@ void loop() {
     int32_t right32 = buffer[i];
     int32_t left32  = buffer[i + 1];
 
-    int16_t right16 = (int16_t)(right32 >> 16);
-    int16_t left16  = (int16_t)(left32 >> 16);
+    int16_t right16 = (int16_t)(right32 >> 14);
+    int16_t left16  = (int16_t)(left32 >> 14);
 
     block[blockIndex++] = left16;
     block[blockIndex++] = right16;
diff --git a/test.wav b/test.wav
index 66a8c3b..53ae44f 100644
Binary files a/test.wav and b/test.wav differ
diff --git a/test_record.sh b/test_record.sh
new file mode 100755
index 0000000..d2555b0
--- /dev/null
+++ b/test_record.sh
@@ -0,0 +1 @@
+parec -d esp32.monitor --file-format=wav > test.wav