| Term | Definition |
| audible | able to be heard |
| audience | the people who hear a speaker or performance |
| audition | a try out for a role -- hearing test |
| auditorium | a large room or hall where people gather to listen to speakers or watch performances |
| inaudible | not able to be heard |
| megaphone | a cone shaped horn used to direct the voice and make it sound louder |
| phonics | the study of the sounds of the letters of the alphabet |
| saxophone | a curved wind instrument made of brass |
| stereophonic | an electronic system that blends sounds from more than one source |
| symphony | a long piece of music to be played by an orchestra |
| audit | an official examination of records |
| auditory | related to the sense of hearing |
| phoneme | the smallest unit of letter sound |
| phonetics | the study of letter sounds |