Chapter 3

Front 1

heartz

Back 1

the SI unit of frequency, equal to one cycle per second.

Front 2

frequency

Back 2

the rate at which something occurs or is repeated over a particular period of time or in a given sample

Front 3

echolocation

Back 3

the location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

Front 4

infrasound

Back 4

sound waves with frequencies below the lower limit of human audibility.

Front 5

ultrasound

Back 5

sound or other vibrations having an ultrasonic frequency, particularly as used in medical imaging.

Front 6

sound

Back 6

vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.

Front 7

elasticity

Back 7

the ability of an object or material to resume its normal shape after being stretched or compressed; stretchiness.

Front 8

acoustics

Back 8

the properties or qualities of a room or building that determine how sound is transmitted in it.

Front 9

transducer

Back 9

a device that converts variations in a physical quantity, such as pressure or brightness, into an electrical signal, or vice versa.

Front 10

tuning fork

Back 10

A two-pronged steel device used by musicians, which vibrates when struck to give a note of specific pitch.

Front 11

compression

Back 11

the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.

Front 12

rarefaction

Back 12

diminution in the density of something, especially air or a gas

Front 13

cycle

Back 13

a series of events that are regularly repeated in the same order

Front 14

period

Back 14

a certain action or events happening in a certain time.

Front 15

sound wave frequency

Back 15

wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

Front 16

wavelenght

Back 16

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Front 17

amplitude

Back 17

the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Front 18

tone

Back 18

a musical or vocal sound with reference to its pitch, quality, and strength.

Front 19

decible (dB)

Back 19

a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.

Front 20

absorption

Back 20

the process or action by which one thing absorbs or is absorbed by another.

Front 21

reflection

Back 21

the throwing back by a body or surface of light, heat, or sound without absorbing it.

Front 22

refraction

Back 22

the fact or phenomenon of light, radio waves, etc., being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

Front 23

bitrate

Back 23

the number of bits per second that can be transmitted along a digital network.

Front 24

codecs

Back 24

device or program that compresses data to enable faster transmission and decompresses received data.

Front 25

wrappers

Back 25

a loose robe or gown.

Front 26

WAV

Back 26

Waveform Audio File Format (WAVE, or more commonly known asWAV

Front 27

AIFF

Back 27

Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices.

Front 28

CDA

Back 28

The Child Development Associate Credential (CDA) is a nationally recognized entry level credential in the field of Early Childhood Education

Front 29

MP3

Back 29

a means of compressing a sound sequence into a very small file, to enable digital storage and transmission.

Front 30

AAC

Back 30

All Conditions Control

Front 31

MIDI

Back 31

a widely used standard for interconnecting electronic musical instruments and computers.

Front 32

Audacity

Back 32

the willingness to take bold risks.

Front 33

Garage Band

Back 33

is a software application for OS X and iOS that allows users to create music or podcasts. It is developed and sold by Apple Inc. on OS X

Front 34

monaural sound

Back 34

Monaural or monophonic sound reproduction (often shortened tomono) is single-channel.

Front 35

stereophobic sound

Back 35

This is usually achieved by using two or more independent audio channels through a configuration of two or more loudspeakers (orstereo headphones) in such a way as to create the impression of sound heard from various directions, as in natural hearing.

Front 36

surround sound

Back 36

a system of stereophonic sound involving three or more speakers surrounding the listener so as to create a more realistic effect.

Front 37

streaming

Back 37

a method of transmitting or receiving data (especially video and audio material) over a computer network as a steady, continuous flow, allowing playback to proceed while subsequent data is being received.