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MRAT 6070 - Visual Aesthetics and Tech > Ch 6 - Sound > Flashcards

Ch 6 - Sound Flashcards

1
Q

wave

A

undulation of traveling energy

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2
Q

crest

A

highest point of a wave (max pressure of air molecules in sound)

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3
Q

trough

A

lowest point of a wave (max release of air molecules in sound)

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4
Q

velocity

A

speed of wave in relation to time

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5
Q

wavelength

A

measurement of full cycle of wave, from crest to crest

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6
Q

frequency

A

number of cycles a wave travels in 1 second

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7
Q

pitch

A

aural manifestation of sound wave directly proportional to frequency

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8
Q

Hertz (Hz)

A

basic unit of measurement of frequency of sound

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9
Q

amplitude

A

height of wave; with sound waves, determines loudness

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10
Q

decibel

A

unit of measurement for amplitude (loudness) of sound wave

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11
Q

attenuation

A

weakening of energy wave as it travels

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12
Q

transduction

A

conversion of energy from one form to another

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13
Q

radio frequency

A

part of electromagnetic spectrum used for wireless broadcasting communication

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14
Q

impedance

A

amount of resistance to signal

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15
Q

dynamic mic

A

uses coil and magnet to produce audio signal

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16
Q

condenser mic

A

uses two charged metal plates (one moving, one fixed) to create audio signal

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17
Q

voltage

A

electrical energy

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18
Q

ribbon mic

A

magnetic mic with small strip of metal instead of coil

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19
Q

phantom power

A

externally provided power circuit used for preamplification in condenser mics

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20
Q

frequency response

A

sensitivity across range of frequencies

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21
Q

pickup pattern

A

area around mic in which sound is clearly reproduced

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22
Q

omni mic

A

includes entire surrounding area of mic, eliminating only area directly behind

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23
Q

bidirectional mic

A

includes right and left sides of mic

24
Q

unidirectional mic

A

most sensitive directly in front and limited sensitivity on sides and behind

25
Q

on-axis

A

proper location of subject within pickup pattern of mic for optimum audio recording quality

26
Q

handheld mic

A

designed fro use in proximity to subject

27
Q

lavaliere mic

A

designed to be attached to subject

28
Q

shotgun mic

A

narrow pickup pattern, designed for recording audio at distance from source, usually method for removing mic from image frame

29
Q

unbalanced cable

A

uses just 2 conductors and wires (one for signal, one wrapped around as shield)

30
Q

balanced cable

A

3 conductors attached to 3 wires (XLR); 2 carry signal and 1 acts as shield; 2 sig wires carry same signal but polarity reversed on one

31
Q

sampling rate

A

number of digital samples taken per second

32
Q

bit depth

A

amount of digital information taken within each individual sample

33
Q

streaming audio

A

media presentation technique that allows simultaneous viewing/listening while downloading rich media from internet onto computer

34
Q

lossy

A

reduced quality due to info lost from compression

35
Q

lossless

A

no info lost from compression

36
Q

VU meter

A

measurement displays amount of voltage passing through it

37
Q

LED meter

A

has row/column of lights that light up in proportion to strength of signal

38
Q

monitoring

A

process of listening to audio signal during recording to ensure proper level and sound quality

39
Q

peak

A

highest point of voltage within audio signal

40
Q

overmodulation

A

point at which peak of audio signal exceeds max safe recording range and risks distortion

41
Q

ride the gain

A

adjust level while recording/taping

42
Q

S/N ratio

A

relative proportion of desired info and interference

43
Q

ambience

A

natural sound of location

44
Q

timbre

A

tone quality

45
Q

harmonics

A

group of frequencies that creates a specific sound

46
Q

sound envelope

A

shape of sound wave (ADSR)

47
Q

reverb

A

multiple reflections of sound off surfaces surrounding source

48
Q

sound presence

A

subjective sense of sound proximity

49
Q

binaural hearing

A

ability of human ears to perceive difference in location, duration, and presence of sound

50
Q

sound perspective

A

perception of placement of sound in space

51
Q

stereo

A

method of recording, mixing, and playing back on 2 separate channels/tracks

52
Q

surround

A

uses 4 or more channels

53
Q

room tone

A

sound of space/ambient sound

54
Q

flash memory

A

form of solid state drives like SD card/compact flash card

55
Q

broadcasting

A

transmitting of radio waves point to multipoint, whereby one transmitter reaches many receivers

56
Q

podcast

A

radio broadcast/audio blog that can be downloaded/streamed to computer/smartphone

MRAT 6070 - Visual Aesthetics and Tech (10 decks)

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