modulation

US /ˌmɑː.dʒəˈleɪ.ʃən/
UK /ˌmɑː.dʒəˈleɪ.ʃən/
1.

modulasi

the exertion of a modifying or controlling influence on something.

:
endorphins in the body are responsible for the modulation of pain sensation
2.

modulasi

variation in the strength, tone, or pitch of one's voice.

:
excellent voice modulation