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.
像dove.wav手哨 聲道：2 類型：wav wind、pitched、animal、whistle、high、air、dreamlike、OWI、blow、hands、bird、dove 風、傾斜的、動物、哨、高、空氣、夢一般的、OWI、打擊、手、鳥、哪裡 資料來源：freesound ( https://freesound.org )
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