Two folds of tissue that make up the human voice box.
The ability of a material to bounce back after being disturbed. The greater elasticity a medium has the faster sound waves will travel in it.
The ratio of the mass of a substance to its volume; mass/volume. The denser a medium is the slower sound waves will travel in it.
The amount of energy per second carried through a unit area by a wave.
Perception of the intensity of a sound.
A unit of measurement of loudness.
Sound waves with frequencies above the audible range of humans (>20,000 Hz).
Sound waves with frequencies below the audible range of humans (<20 Hz).
The perception of the frequency of a sound.
The apparent change in frequency of a sound as the source moves in relation to the listener.
The overall quality of a sound; the blending of the fundamental tone and overtones makes.
A set of tones and overtones combined in ways that are pleasing to the ear.
A mixture of sound waves with no pleasing timbre and no identifiable pitch.
The sound produced when notes that have no musical relationship are played together.
The study of how well sounds can be heard in a particular room or hall.
The regular changes in loudness of a sound when two sounds of different frequencies are played together.
A narrow region leading from the outside of the human ear to the eardrum.
A small, tightly stretched, drumlike membrane in the ear.
The chamber between the eardrum and cochlea containing three tiny bones (hammer, anvil, and stirrup) that concentrate the vibrations of the eardrum on the cochlea's oval window.
The fluid-filled cavity of the inner ear that transmits sound impulses to the auditory nerve when the fluid moves which causes the hairs to sway back and forth.
A device that determines the distance of an object (mainly under water) by recording the reflections of sound waves.
The use of reflection of sound waves to navigate and to locate prey.
An image formed by an ultrasound machine.
A disturbance that travels through a medium (e.g. air, wood & water) as a longitudinal wave.
Speed of sound
How fast sound travels in a given medium. The speed of sound depends on the elasticity, density, and temperature of the medium. The higher the temperature a medium has the faster sound waves will travel in it.
The frequency at which a standing wave occurs. Every object has its own resonant frequency.
The pitch produced by the resonant frequency.
A natural frequency that is a multiple of the fundamental tone's frequency.