Holding your hands in a cups for together and blowing thru the knuckles on your thumb.If you lift one finger to create an extra hole for wind to come out of the sound changes. <br/>像dove.wav手哨<br/>聲道：2<br/>類型：wav<br/>wind、pitched、animal、whistle、high、air、dreamlike、OWI、blow、hands、bird、dove<br/>風、傾斜的、動物、哨、高、空氣、夢一般的、OWI、打擊、手、鳥、哪裡<br/>資料來源：freesound ( https://freesound.org )