This sound is created from second tone of first level soundtrack in Super Mario Bros by delay effect in Audacity:
Delay level per echo: -1,5 dB
Delay time: 0,8
Pitch change effect pitch/tempo
Pitch change per echo: 1,02%
Number of echoes: 30 8位confusion.wav 聲道:2 類型:wav 8-bit、retro、game、mario、chip、confusion、arcade、video-game 8位、復古、遊戲、馬里奧、芯片、混亂、拱廊、視頻遊戲 資料來源:freesound ( https://freesound.org )