audio
nounverb verb
grunt - (of an animal, especially a pig) make a low, short guttural sound
verb
mumble - Say something indistinctly and quietly, making it difficult for others to hear
nounverb noun
twang - A strong ringing sound such as that made by the plucked string of a musical instrument or a released bowstring
crackle - A sound made up of a rapid succession of slight cracking sounds
rustle - Make a soft, muffled crackling sound like that caused by the movement of dry leaves or paper
mutter - Say something in a low or barely audible voice, especially in dissatisfaction or irritation
sizzle - (of food) make a hissing sound when frying or cooking
Picture
Amplify - To increase the strength, effect, or intensity of something.
shriek - Utter a high-pitched piercing sound or words, especially as an expression of terror, pain, or excitement
howl - A cry of pain, anger, amusement, etc.