Meaning of “amplify” - Learner’s Dictionary

amplify

verb [ T ] uk us /ˈæmplɪfaɪ/
SOUND

to make a sound louder using electronic equipment

OPINION formal

to make a feeling or opinion stronger or clearer

amplification uk us /ˌæmplɪfɪˈkeɪʃən/ noun [ U ]

(Definition of “amplify” from the Cambridge Learner’s Dictionary © Cambridge University Press)