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Intro to Audio Engineering > Midterm Rec103 > Flashcards

Midterm Rec103 Flashcards

1
Q

period of a wave

A

T = 1000mls / frequency

or 1 sec/frequency

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2
Q

Compression

A

squeezing molecules into an area creating a region of higher pressure

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3
Q

Rarefaction

A

the area opposite of compression. Region of lower pressure

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4
Q

Velocity of Sound

A

1130ft/sec (at 68 degrees F)

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5
Q

PFL

A

Pre-fader Listen

Mono, Non Destructive

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6
Q

Lambda

A

lambda = velocity/frequency

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7
Q

AFL

A

After Fader Listen

Stereo, Destructive

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8
Q

Pro Operating Level

A

+4dBu = 1.228 (1.23v) = 0dBVu = -18dBFs

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9
Q

Amplitude Measurements

name three

A

Peak to Peak
Peak
RMS

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10
Q

Ratios used to calculate Harmonics of a frequency

A

2 : 1 going up

1 : 2 going down

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11
Q

What stays constant in a parallel circuit?

A

VOLTAGE

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12
Q

Voltage stays constant in what type of circuit?

A

Parallel

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13
Q

What stays constant in a series circuit?

A

Current

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14
Q

Current stays constant in what type of circuit?

A

Series

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15
Q

Series circuit calculations:

A
  1. Resistance Total (ohms) R1 + R2 + R3
  2. Current Total.
    I = V / R
  3. Voltage Drop/Loss
    a) V = I x R
    b) V = I x R
    c) V = I x R
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16
Q

Parallel circuit calculations:

A
  1. Resistance Total (Ohms)
  2. Current Total.
    I = V / R
  3. Current Drop/Loss
    a) I = V / R
    b) I = V / R
    c) I = V / R
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17
Q

When sending to a time based effect unit, that send should be?

A

Post Fader Aux

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18
Q

A common path assign for a signal is known as?

A

Bus Assign

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19
Q

Unity Gain between the input and output of a device refers to?

A

No change in level

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20
Q

A bus on a desk/console is used to?

A

Route inserts to the aux returns

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21
Q

A bus output on a desk is usually used to?

A

to get to the multi-track recorder

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22
Q

What does AFL solo mean?

A

After Fader Listen

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23
Q

What does PFL solo mean?

A

Pre Fader Listen

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24
Q

Which is the correct combo for PFL solo?

A

Mono Non Destructive

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25
Q

Peak/Clipping LED’s on the channel paths input should?

A

Rarely Illuminate

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26
Q

Channel insert points are used for?

A

Adding a dynamic processor

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27
Q

While working in a studio we always monitor via?

A

the LR main bus

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28
Q

Phantom power is AC or DC?

A

DC

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29
Q

What is Phantom Power

A

48v and powers condenser mics

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30
Q

A stage monitor mix or studio headphone mix is sent?

A

Pre Fader Aux

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31
Q

RMS formula

A

Peak x 0.707
or
Peak / 1.414

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32
Q

A Variable resistor that adjusts voltage is known as?

A

potentiometer

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33
Q

The unit of potential difference is?

A

Volt

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34
Q

Impedance is the total resistance to the flow of?

A

AC

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35
Q

Resistance is the total resistance to the flow of

A

DC

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36
Q

Impedance is represented by which letter?

A

Z

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37
Q

An electoral circuit in which current only flows in one direction is?

A

DC

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38
Q

An XLR is a Mic/Line connector on which pin 2 is:

A

HOT

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39
Q

in a TRS cable the tip is

A

HOT

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40
Q

in an XLR cable the ground is PIN number ___

A

1

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41
Q

A Device that converts energy from one form to another:

A

Transducer

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42
Q

A component that helps converts AC to DC i

A

diode

43
Q

Voltage has a more appropriate name which is

A

EMF

44
Q

Calculations for Voltage

A

V = I x R

45
Q

For a conductor to conduct, the material must have

A

Free Electrons

46
Q

Measurement for capacitors

A

Farads

47
Q

the Two Types of Capacitors

A

Ceramic and electrolytic

48
Q

Transistors are used to __

A

Amplify

49
Q

the Two Type of transistors

A

NPN & PNP

50
Q

the Two Types of Potentiometers

A

Logarithmic & Linear

51
Q

A switch when it is open means

A

it is OFF

52
Q

Adding batteries in a series means that the voltage

A

becomes higher

53
Q

What is a capacitor?

A

Stores charge and discharges it into circuit when there is a drop in charge

54
Q

LED stands for

A

light emitting diode

55
Q

the Two Types of Switches

A 
Normally Open (N.O.)
Normally Closed (N.C.)
56
Q

What does a battery do? and what happens when you put multiple together?

A

stores power. in series voltage adds up

57
Q

What is a diode?

A

Allows current to pass through them in one direction.

58
Q

What is a transistor?

A

amplifies small current so that a larger current can pass between its collector and emitter pins

59
Q

What is a potentiometer?

A

Variable resistor

60
Q

Ohms Law

A

the relationship between between voltage, current, and resistance

61
Q

What is the electrical potential for a source in a circuit referred to as?

A

Voltage, aka EMF

62
Q

What is the flow of electric charge referred to as?

A

Current

63
Q

What does AC stand for?

A

Alternating current

64
Q

What does DC stand for?

A

Direct Current

65
Q

a. What does V stand for?
b. What does I stand for?
c. What does R stand for?

A

Voltage
Current
Resistance

66
Q

Identify the symbol

A

Resistor

67
Q

Identify the symbol

A

Ceramic Capacitor

68
Q

Identify the symbol

A

Electrolytic Capacitor

69
Q

Identify the symbol

A

Diode

70
Q

Identify the symbol

A

Potentiometer

71
Q

Identify the symbol

A

LED

72
Q

Identify the symbol & types (left to right)

A

Switches
N.O. Normally open
N.C. Normally closed

73
Q

Identify the symbol

A

Battery

74
Q

What is Pre-Fader Aux used for?

A

Stage monitors, Cue mix, H/P mix

75
Q

What is PFL used for?

A

Level setting, solo

76
Q

On a mixer, how do you tap the audio signal after the EQ, pan, and fader?

A) Post Aux 
B) PFL
C) Bus Assign
D) Post Fader Aux
E) AFL
F) Pre Fader Aux
G) Insert
A

AFL

77
Q

What is Post-Fader aux used for?

A

FX sends, Time based processors

78
Q

the Flow of electrons through a conductor or circuit

A
79
Q

the Law of Electrostatics

A
80
Q

This room houses the console, monitors and outboard gear

A
81
Q

Worlds MIDI Standard connector

A
82
Q

Electronic component that stores a charge

A

capacitor

83
Q

Studio transducer that operates in reverse of the Mic

A
84
Q

a measure of the “load” on a circuit

A
85
Q

a material that allows an electric current to pass very well

A

conductor

86
Q

Fletcher-Munson Curves are a measure of what?

A

Equal Loudness

87
Q

Harmonics + fundamental frequencies = _____

A

timbre ?

88
Q

Distance between two corresponding points on a sound wave which are in phase

A

Amplitude

89
Q

the brain determines the direction of a sound by using what?

A

arrival time difference, intensity difference, and phase shift

90
Q

adding two waves together that are separated by 90 degrees produces what?

A

comb filter?

91
Q

When sending to a time based effect unit, that send should be what?

A
92
Q

where is a stage monitor/studi/cue headphone mix sent?

A
93
Q

ratio for an Octave

A

8:1

94
Q

the Mackie 16:4:2 means what?

A

16 channels, 4 bus, stereo

95
Q

How is an insert cable wired?

A
96
Q

What type of switch is a Relay?

A

Electromagnetic switch

97
Q

TILEMFADPA

A

Trim, Insert, Low Cut, EQ, Mute, Fader, Aux, Direct, Pan, Assign

98
Q

How many conductors must a balanced line have?

A

2 or 3

99
Q

How many conductors does an unbalanced line have?

A

1

100
Q

what does a transformer do?

A

has the ability to boost or lower voltage and current levels

101
Q

Which do you use to create a headphone mix?

A)Pre Fader Aux
B)PFL
C)Post Fader Aux
D)AFL

A

Pre Fader Aux

102
Q

Which do you use to create a headphone mix?

A)Pre Fader Aux
B)PFL
C)Post Fader Aux
D)AFL

A

Pre Fader Aux

103
Q 
Which do you use for the stage monitors?
A)Pre Fader Aux
B)PFL
C)Post Fader Aux
D)AFL
A

Pre Fader Aux

Intro to Audio Engineering (1 decks)

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