Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Audio Fundamentals > Midterm Review > Flashcards

Midterm Review Flashcards

1
Q

Define One Cycle

A

One instance of compression and rarefaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How are cycles related to frequency?

A

Frequency is the measurement of cycles per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The lowest string on a guitar produces 82.41 vibrations per second. What would be the frequency of this sound?

A

82.41 Hz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does amplitude tell us about a sound?

A

How much energy / we perceive this as volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What word describes vibrations transmitted through an elastic medium?

A

Sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a graphic representation of a sound wave?

A

Waveform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the range of human hearing?

A

20 Hz - 20kHz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What unit do we measure frequency?

A

Hertz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If the amount of cycles per second increases, what happens to the frequency and pitch?

A

Both get higher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the speed of sound (velocity)?

A

1130 ft/sec at 68°F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is wavelength?

A

Physical distance of cycles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the formula to configure wavelength?

A

Velocity/Frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is dB an abbreviation of?

A

Decibel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the unit of measure for sound pressure level?

A

dB SPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the Threshold of Hearing?

A

0 dB SPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the Threshold of Pain?

A

140 dB SPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Define an amplitude envelope and what each letter represents:
A:
D:
S:
R:

A

A: Attack – duration for sound to reach full volume
D: Decay – duration from full volume to sustained level
S: Sustain – duration of ongoing sound
R: Release – duration for sound to reach silence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Define the Harmonic Series:

A

Integer divisions of a fundamental frequency – sonic fingerprint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the formula to configure the frequency of harmonic partials?

A

fundamental frequency x partial #

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What would be the frequency of the 4th harmonic partial if the fundamental is 1100 Hz?

A

4400 Hz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What would be the frequency of the 5th harmonic partial if the fundamental is 350 Hz?

A

1750 Hz

22
Q

What is the harmonic makeup of a square wave?

A

Odd partials

23
Q

What is the harmonic makeup of a triangle wave?

A

Odd partials, half the amplitude in relation to square wave

24
Q

What is the harmonic makeup of a sawtooth wave?

A

All partials

25
Q

Define Timbre

A

Characteristics of a sound

26
Q

What is the fundamental frequency?

A

Lowest frequency of a harmonic sound

27
Q

What are partials?

A

Divisions of a fundamental frequency

28
Q

What occurs when air molecules cause vibration of an otherwise still vibratory body of harmonic likeness?

A

Sympathetic Vibration

29
Q

As audio engineers, why is it important to have an understanding of the Harmonic Series?

A
30
Q

What are the three bones of the Auditory Ossicles?

A

Malleus (Hammer) , Incus (Anvil) , Stapes (Stirrup)

31
Q

In one word, what is the ear?

A

Transducer

32
Q

A tube-like organ containing two fluid filled chambers:

A

Cochlea

33
Q

When sound travels from the source to the listener:

A

Direct sound

34
Q

When sounds bounce off a surface and then travel to the listener:

A

Early Reflections

35
Q

Random and continuous reflections:

A

Reverb

36
Q

3 perceptual cues that aid in perceiving direction:

A

Interaural Intensity Differences, Interaural Arrival-time Differences, Effects of the Outer Ear

37
Q

Describe the Fletcher Munson Curve:

A

Frequency response of the human ear

38
Q

What will we hear if two identical waves are 180° out of phase with one another?

A

Silence

39
Q

Define Transducer

A

Converts one form of energy into another

40
Q

Define Polar Pattern

A

Directionality of the microphone

41
Q

Cardioid Polar Pattern

A

Picks up mostly in front of the microphone

42
Q

Figure 8 / Bi-Directional Polar Pattern

A

Picks up front and rear, but not much on the sides.
* Ribbon mics are mostly Figure-8

43
Q

Omnidirectional Polar pattern

A

360°

44
Q

Define Sine Wave

A

1 Single Frequency

45
Q

Physical, Analog, or Digital:

dbSPL - Decibel sound Pressure Level

A

Physical

46
Q

Physical, Analog, or Digital:

dBv or dBu - Voltage

A

Analog

47
Q

Physical, Analog, or Digital:

dBFS - Decibel Full Scale

A

Digital

48
Q

Define “Peak” in metering

A

Visual representation of the highest level in a short duration. Short-term loudness

49
Q

Define “RMS” in metering

A

Visual representation of average loudness

50
Q

Define “LUFS” in metering

A
  • Loudness Full Scale
  • Found in Digital Realm
  • Measures the perceived loudness
51
Q

We can listen to HOW MANY dB for up to
8 hours before we suffer hearing
damage

A

85 dB SPL

52
Q
A

Audio Fundamentals (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions