Some, like bang, have already acquired word status and their orthography and meaning is fixed. What would be the best way of writing this. Onomatopoeia can be more or less conventional.
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An answer for which i do not have a source, but is worth consideration, is that the sound shhh is soothing to babies, perhaps because it imitates the sounds in the womb.
I know i could say shush, but there are times when i really have to say shshshshsh.
Khhh shhs hshh shhh 希望能帮到你们，这个要经常练习，beatbox不是一两天就能学会的，基础三音很重要，就算学会了，每天还是要练习一下，因为这个beatbox少不了的节奏！
