amplified — Simple past tense and past participle of amplify.
amplify — If you amplify a sound, you make it louder, usually by using electronic equipment.
amplitude — In physics, the amplitude of a sound wave or electrical signal is its strength.
Four-or-more syllable rhymes
gratifying — tending to gratify; giving or causing satisfaction; pleasing.
satisfying — to fulfill the desires, expectations, needs, or demands of (a person, the mind, etc.); give full contentment to: The hearty meal satisfied him.
