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Symbol Key
“the six categories of noises for the futurist orchestra that we intend soon to realize mechanically:”
(The Art of Noise by Luigi Russolo, 1913)

1

Roars ⊂
Claps ☍
Noises of falling water ꃼ
Driving noises ϡ
Bellows 】

2

Whistles ⥰
Snores ؂
Snorts ლ

3

Whispers ﹎
Mutterings ↸
Rustlings ▩
Grumbles ⬳
Grunts 〙
Gurgles ︷

4

shrill sounds ⌇
Cracks ☈
Buzzings ░
Jingles ⊹
Shuffles ⇼

5

Percussive noises using metal ⑈, wood 〴, skin⊍, stone ≗, baked earth ♨, etc. 

6

Animal and human voices: shouts ⥾, moans ≍, screams ⎋, laughter ≎, rattlings ⌭, sobs ‱