This sound is created from
http://freesound.org/people/michael_kur95/sounds/329927/ by using delay function in the Audacity. Delay time is 0,21, pitch change per echo -2, number of echoes 20.
Firework.wav
聲道:2
類型:wav
detonation、grenade、bomb、explosion、explosive
引爆、手榴彈、炸彈、爆炸、爆炸物
資料來源:freesound ( https://freesound.org )