Radicals ( Radical215) nine strokes in Kanji;

dimensional, e.g.

sound;

directional, e.g.

;

logical, e.g.

in Hiragana: noise; sound;
fame; musical note; report;
derived character in Chinese reading ... ;

in Kanji: noise; sound;

O (family name, surname); Odo (family name, surname); On (name);

numerological, e.g.

9;

structural, e.g.

many human beings livable moons exist in our universes, and sound of planet may vary (e.g. don, on, un, ... ); in 2,3 dimensional space, sounds obey C Sequence Number (BF2, Brunching Factor 2) ... ;

regarding (noise, sound) , this DOMAIN has defined (noise, sound) between plus 340 dB and minus 340 dB (+340   ~   -340) and then AI to reduce noise, a.k.a. noise cancellation e.g. in air, WHEN (, ) resonances exist, vibration causes noise in omni; for each wavelength, undefined patterns are filtered, so called noise cancellation; directional sound beams are very useful in many ways ... ;

Radicals;