周しゅう波は数すう変へん調ちょう方ほう式しきMeaningsNoun1. Frequency ModulationKanji used周circumference波a wave数number変change調tone方way式ceremonyComposed of周しゅう波は数すうfrequency (esp. of waveforms)Noun変へん調ちょうirregularity; abnormality; anomaly; change of tone; transposition; modulationNoun方ほう式しきform; method; system; formulaNoun