| A | B |
|---|
| Two folds tissue that make up the human voice box. | Larynx |
| The ability of a material to bounce back after being disturbed. | Elasticity |
| The amount of energy per second carried through a unit area by a wave. | Intensity |
| Perception of the intensity of a sound. | Loudness |
| A unit of measurement of loudness. | Decibels |
| Sound waves with frequencies above 20,000 Hz. | Ultrasound |
| Sound waves with frequencies below 20 Hz | Infrasound |
| Perception of the frequency of a sound | Pitch |
| The apparent change in frequency of a sound as the source moves in relation to the listener | Doppler effect |
| The overall quality of a sound | Timbre |
| A set of tones and overtones combined in ways that are pleasing to the ear | Music |
| A mixture of sound waves with no pleasing timbre and no identifiable pitch | Noise |
| The sound produced when notes that have no musical relationship are played together | Dissonance |
| The study of how well sounds can be heard in a particular room or hall | Acoustics |
| The regular changes in loudness of a sound when two sounds of different frequencies are played together | Beats |
| A narrow region leading from the outside of the human ear to the eardrum | Ear canal |
| A small, tightly stretched, drumlike membrane in the ear | Ear drum |
| The space behind the eardrum | Middle ear |
| A fluid-filled cavity behind the inner ear | Cochlea |
| A system of detecting reflected sound waves | Sonar |
| The use of reflection of sound waves to navigate and to locate prey | Echolocation |
| An image formed by an ultrasound machine | Sonogram |
