Brainscape's Knowledge GenomeTM

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


See full index

Music Theory > audio exam > Flashcards

audio exam Flashcards

You may prefer our related Brainscape-certified flashcards:
Ultimate Music Theory flashcards
1
Q

How do we measure the level of sound?

A

Decibel

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

The human hearing responds to a broad range?

A

Frequencies

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

What is the standard ratio band for professional analysis EQ?

A

31 band EQ

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

What is the range of the human audio spectrum?

A

20Hz – 20,000Hz

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

How many octave bands are in the above audio spectrum?

A

11octave bands

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

What do we often talk about frequencies as?

A

Ratios

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

What do we define average threshold of human hearing?

A

1kHz – 0dB SPL

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

What dB scale is the threshold of pain?

A

120-130dB

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

What does logarithmic scales express?

A

Loudness in non linear as a compact form as decibels

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

Can decibel measure voltage?

A

Yes

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

What are critical bands?

A

The smallest frequency difference between two signals or partials such that each can still be heard separately.

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

What are the three sections of the ear?

A

Outa, Middle, Inner

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

What the other name for the outa ear?

A

Pinna

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

When sound focuses into the ear canal what is the level of db boost?

A

5 to 6dB boost

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

What’s the function of the tympanic membrane?

A

The tympanic membrane converts acoustic pressure variations from the outside world into mechanical vibrations in the middle ear.

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

What are three auditory ossicles of the middle ear?

A

Malleus, Incus, Stapes

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

The inner ear consists of the snail-like structure what is its name?

A

Cochlea

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

What is the function of the cochlea?

A

The function of the cochlea is to convert mechanical
vibrations into nerve firings to be processed eventually by the brain.

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

Which way do we recognise sound in the cochlea?

A

High frequency to Low frequency

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

What’s the medium frequency in the cochlea?

A

1.5kHz or 1,500 Hz

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

What does the basilar membrane do?

A

The basilar membrane is responsible for carrying out a frequency analysis of input sounds.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What does MIDI stand for?

A

Musical Instrument Digital Interface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does MIDI Do?

A

A communications language that lets synthesizers, computers, keyboards, controllers and other devices talk to each other.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What a three ports of MIDI?

A

MIDI in, MIDI out, MIDI thru

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is another connectivity with todays hardware devices?

A

USB (Universal Series Bus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Name four various MIDI messages?

A

Note on, Note off, controller change, pitch bend

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

MIDI cable carries how many logical channels?

A

16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is a MIDI Network?

A

A MIDI network is a combination of hardware and software that provides interconnectivity between a group of MIDI devices, such as
synthesizers, controllers, and sequencers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

How many bits per second of a MIDI data rate?

A

31250 bits per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q
  1. Can MIDI handle 1500 messages per second?
A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Name two types of MIDI bytes in a message?

A

Status, Data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What’s the meaning of a control or controller?

A

An instrument that controls other, (keyboard controller, etc.) Physical controls (foot pedal etc.) MIDI control change messages [volume controller etc)

33
Q

What are the four types of MIDI messages?

A

Channel Messages/System Exclusive Messages/System Common Messages/System Real-Time Messages

34
Q

What’s a synthesizer?

A

A synthesizer is an electronic musical instrument that uses one or more sound generators to create waveforms which are then processed and combined in order to generate musical sounds

35
Q

What’s the application of a sequencer?

A

A music sequencer is an application or a device to record and playback musical information / notation

36
Q

What’s a sampler device?

A

A sampler is an electronic musical instrument which plays back recordings (or “samples”) that are loaded or recorded onto it to perform or compose music

37
Q

What is General MIDI?

A

General MIDI or GM is a standardized specification for electronic musical instruments that respond to MIDI messages.

38
Q

Name one non musical application that MIDI could be used for?

A

Special effects, Lighting etc

39
Q

What is a transducer?

A

A transducer is a device that coverts energy from one form to another. Usually a transducer converts a signal in one form of
energy to a signal in another. Types of transducers you’ll be using are microphones and loudspeakers

40
Q

Does a microphone have a transducer?

A

Yes

41
Q

. What is amplification of sound?

A

Amplification of sound involves input and output transducers (usually a microphone and loudspeaker).

42
Q

What kind of devices would you find a vacuum tube?

A

Guitar Amplification, Some hammond organs, HIFI, certain recording equipment, microphones,
old vinyl amplification etc

43
Q

What a the four ways of storing the electrical signals of captured sound?

A

Vinyl, Magnetic Tape, Compact Disk, Digital Recording

44
Q

. What are the four components of recording to vinyl?

A

Cylinder, Needle, Diaphragm, Horn

45
Q

Vinyl records revolve at?

A

33 or 45rpm

46
Q

What kind of cut into a vinyl LP would produce 4 tracks of 300Hz?

A

Vertical

47
Q

What type of recording machine produces AC bias?

A

Tape Recording Machine

48
Q

How many heads did a tape recording machine have

A

3- Erase head, record head, playback head

49
Q

What are three most common microphone types?

A

Dynamic, Condenser, Ribbon

50
Q

Which microphone type would be best for a live performance?

A

A dynamic microphone

51
Q

Name two disadvantages with a condenser microphone?

A

Expensive, May pop and crack closed miked (fragile)

52
Q

Name two microphone directivity?

A

Omnidirectional, cardioid

53
Q

Name four parts of a dynamic speaker?

A

Suspension, cone, magnet, diaphragm

54
Q

Name the three parts of a three-way speaker?

A

High frequency driver, Mid frequency driver, Low mid/Low frequency driver

55
Q

What is binaural hearing?

A

Binaural hearing gives a sense of localization of the sound source

56
Q

. What’s non linear gain?

A

Overdriving an amplifier occurs when the amp is supplied with an input signal that takes it outside its linear region

57
Q

. Name one of the limitations of amplification?

A

Limited output voltage, current, and power levels. This will mean that a given amplifier can’t output
signals above a particular level.

58
Q

What does SNR stand for?

A

Signal to Noise Ratio

59
Q

. What does Panning on mixing desk do?

A

Changes the placement of the signal

60
Q

What are the 5 digital representations of sound?

A

Sampling, AD/CA DAC, Sampling rate, Quantization, Resolution

61
Q

What is a sample rate?

A

The numbers of samples per second is the sample rate

62
Q

What does ADC and DAC stand for?

A

Analogue to Digital Converter/Digital to Analogue Converter

63
Q

When does aliasing or foldover occur?

A

Aliasing or Foldover occurs if you try to digitise a signal higher than the Nyquist frequency?

64
Q

What is the common sample rate for CD audio?

A

44.1kHz

65
Q

What does the sample rate need to be to achieve the Nyquist frequency?

A

The sampling rate must be at least twice as high as the highest frequency to be reproduced

66
Q

What is quantization?

A

Is assigning binary values to analog inputs

67
Q

How many bits are in CD audio

A

16 bit

68
Q

Name one process of a computers memory and storage?

A

RAM or CPU

69
Q

What is dithering?

A

Introduces random noise into the signal to spread out the effects of quantization distortion replacing it with 1b noise and making it much less noticeable

70
Q

True or False – Digital Clipping produces a good unity range?

A

False

71
Q

What would +4dBu level be in digital (full scale)?

A

-20dbFS

72
Q

A perceived doubling of the apparent volume is an increase of approximately: +

A

+10dB

73
Q

An average perceptible halving of the volume of a sound is a change in level of

A

-10dB

74
Q

Name three uncompressed file formats?

A

WAV, AIFF, CAF

75
Q

What is the most popular lossy compressed file to send by email?

A

MP3

76
Q

Name three advantages to digital?

A

Wider Dynamic Range, Better reproduction, Time Efficient

77
Q

Name one disadvantage?

A

Clipping

78
Q

Can a clipped recording be restored?

A

No, re-record

Music Theory (1 decks)

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