This sound is created from different recording recorded by Sony IC recorder and apply Delay in Audacity:
Delay type: Bouncing ball
Delay level per echo: -1 dB
Delay time: 0,050
Pitch change effect: pitch/tempo
Pitch change per echo: -1,0%
Number of echoes: 30 聲道:2 類型:wav Space、Spaceship、Games、laser 資料來源:freesound ( https://freesound.org )