Music Tech Test 1

Front 1

Pinna

Back 1

The outer visible portion of the ear.

Plays important function in localization of sound especially at high resonances

Front 2

20Hz-20,000Hz

Back 2

Human audible spectrum

Front 3

Acoustics

Back 3

The study of the physical properties of sound

Front 4

Psychoacoustics

Back 4

The study of the perception of sound

Front 5

Sound

Back 5

Result of the vibratory motion of some object that supplies its energy to the molecules of air

Front 6

Audio

Back 6

sound

Front 7

Cycle

Back 7

one period of compression and one period of rarefaction

Front 8

compression

Back 8

pushing or pressing molecules

Front 9

rarefaction

Back 9

pulling or stretching molecules

Front 10

frequency

Back 10

The number of cycles of vibration that occur in one second

Front 11

Hertz

Back 11

cycles per second

Front 12

phase

Back 12

point within a cycle of vibration where the sound is at a particular instant

Front 13

Envelope

Back 13

Intensity through the duration of a sound

Front 14

Transducer

Back 14

A device that converts kinetic energy into electrical energy or electrical energy into kinetic energy

Front 15

Loudspeaker

Back 15

Converts electrical vibrations into acoustical ones

Front 16

Microphone

Back 16

Converts the kinetic energy of sound waves in the air into corresponding patterns of electrical current.

Front 17

Field Pattern

Back 17

The directional sensitivity of a microphone

Front 18

Omnidirectional microphone

Back 18

sensitive to sounds of any frequency coming from any direction.

Front 19

Bidirectional microphone

Back 19

"Figure-8" sensitive to sounds coming from front and behind. Not from the sides

Front 20

Cardioid microphone

Back 20

sensitive to sounds in front of the microphone

Front 21

Dynamic Mirophone

Back 21

Contains a movable plate called the diaphragm. Attached to it is a voice coil which is surrounded by a magnet. As sounds reach the mic, they push the diaphragm back and forth. Transforms acoustical vibrations to electrical ones

Front 22

Capacitor Microphone

Back 22

An electrical voltage is applied to a circuit that includes the diaphragm and a second, stationary plate behind the diaphragm.

Front 23

3000hz-7000hz

Back 23

?

Front 24

Infrasonic

Back 24

frequencies of less than 20Hz

Front 25

ultrasonic

Back 25

frequencies higher than the upper limit of human hearing (20,001Hz)

Front 26

subsonic

Back 26

frequencies of less than 20Hz

Front 27

wavelength

Back 27

distance between crests of a wave

Front 28

intensity

Back 28

the power of sound. related to the amplitude of vibration

Front 29

Decibels

Back 29

named in honor of Alexander Graham Bell

Created a means of relating different levels of sound intensity

Front 30

Singing arc

Back 30

William Duddel

Tune circuit connected across an arc. Created a musical tone

Front 31

Theremin

Back 31

Leon Theremin

Early electronic musical instrument

Used a player's hands to control sound(not by direct contact)

Front 32

DEC-PDP8

Back 32

First successful microcomputer

Digital Equipment Corporation

Front 33

Swiss Music Box

Back 33

Used a notched cylinder to make sounds

Front 34

Calliope

Back 34

Musical instrument that produces sound by sending steam through large wistles

Front 35

Hammond Organ

Back 35

Invented by Hammond. One of the earliest Synthesizers.

Front 36

Mechanical organ

Back 36

Self playing Organ

Front 37

Enigma Machine

Back 37

Arthur Scherbius

Used to encrypt and decrypt war messages

Front 38

Sound synthesizer

Back 38

Musical instrument designed specially for the task of generating, processing, and controlling the electrical oscillations that become these sounds

Front 39

Additive synthesis

Back 39

?

Front 40

Subtractive Synthesis

Back 40

The technique of using filters to remove frequencies selectively from the stanadrd timbres produced by VCOs

Front 41

FM Synthesis

Back 41

?