Brainscape's Knowledge GenomeTM

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


See full index

Copyright > Audio Fundamentals unit 3 > Flashcards

Audio Fundamentals unit 3 Flashcards

1
Q

Where can analog and digital conversion be done?

A

in the mic, in the mic pre, just before recording, almost anywhere in the signal chain

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

what does storing audio digitally do?

A

eliminates the unwanted distortions in sound

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

what is line level?

A

+4dB

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

an echo chamber creates…

A

natural sounding reverb

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

what describes the slope of a filter?

A

dB per octave

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

dBa takes into account….

A

human hearing

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

the problem with Vu is that is does not show what?

A

peak levels

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

A unit of resistance to current flow?

A

ohms

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

Resistance to current flow is called?

A

Impedance

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

level control. valuable registers to digital encoders. adjusts voltage.

A

fader

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

What measures voltage?

A

analog meter

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

result in a system noise levels of from -80 dB to -50 dB

A

microphone and preamplifier

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

set of rules governing the format of data sent over the internet

A

internet protocol

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

nothing is lost in process but data reduction is limited 2:1

A

lossless compression

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

consumer line level?

A

-10dB

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

the top and the bottom of the wave form are cut off. this is called…

A

clipping

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

when the signal level tries to exceed the max level its called?

A

overload

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

breaking an audio file into a number of small segments then changes the length and timing elements of a segment by simply adding or subtracting time between these lines.

A

Beat slicing

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

very first cable? port used for transferring data

A

fire wire

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

connects that allow transmission of digital audio streams

A

digital I/O

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

used to play back stored, edited, and processed digital audio by converting it to analog signal and provides 2 or more inputs and outputs.

A

digital audio interface

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

type of data that describes sound in terms of type, pitch, and timing?

A

MIDI file

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

output low pass filter removes high frequency images and noise and smooths out staircase output coming from sample and hold circut

A

anti-imaging filter

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

error in timing of sampling is called?

A

jitter

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

making and “educated” guess at the value of missing data for large errors?

A

interpolation

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

small errors are fixed through parity bits and redundant data

A

error correction

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

low level noise added to audio to increase dynamic range

A

dither

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

rounding error that manifests itself as noise like distortion, granulation, and loss of dynamic range?

A

quantizing error

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

time is “captured” by taking snapshots of the wave at a known fixed time interval

A

sampling

30
Q

Nyquist frequency?

A

1/2 of sampling frequency is the highest audio frequency that can be digitized and produced accurately

31
Q

pro calibration

A

0Vu = 1.23 volts at +4dB

32
Q

doubling or perceived loudness

A

increase of 10 dB

33
Q

decibel reference for consumer equipment

A

dBv

34
Q

two main cues used by ear/brain to calculate the location of a sound?

A

IAD and ITD

35
Q

this audio meter displays instantaneous levels and is found in most daws

A

peak

36
Q

analog recording differs from digital bc analog is…

A

continuous

37
Q

increasing the bit depth in a PCM digital system increases the…

A

dynamic range

38
Q

time delay caused by A-D and D-A conversion or signal processing is called?

A

latency

39
Q

saying a plugin is “native” means..

A

processing is handled by the DAW

40
Q

assigning digital value to analogs signal is called?

A

quantizing

41
Q

most popular lossy data compression?

A

MP3

42
Q

the number of bits per second or bit rate can be found by?

A

multiplying bit depth by sampling frequency per channel of audio

43
Q

@ a sampling rate of 96 kHz, what is the highest audio frequency the recording can process and effectively reproduce?

A

48 khz

44
Q

in digital audio workstations, a “plug in” is…

A

a software processor or virtual instrument add on

45
Q

standard cd frequency

A

44.1 khz

46
Q

very high sampling frequencies improve audio by..

A

allowing better and cheaper anti- aliasing filters

47
Q

equivalent to 0011110?

A

30

48
Q

binary decimal equivalent to 150?

A

10010110

49
Q

rate at which fixed intervals sample of signal is called?

A

sampling frequency

50
Q

DSP stands for?

A

digital signal processing

51
Q

when data that isn’t critical is discarded during compression?

A

lossy compression

52
Q

dB gain going from 500 watts to 1000 watts?

A

3dB

53
Q

The dBV system is used in?

A

consumer and A/V equipment

54
Q

if a microphones preamplifier raises the microphones audio level by 60 dB it will also raise what by 60 dB?

A

noise level

55
Q

AoIP stands for?

A

audio over internet protocol

56
Q

the unit dBFS is a measurement associated with?

A

digital audio

57
Q

if the number of volts increases by 6dB then the number of watts will increase by?

A

6 dB

58
Q

The anti- aliasing filter in an A/D converter removes?

A

frequencies above 1/2 of the sampling frequency

59
Q

Nyquist law states that the minimum sample rate must be at least?

A

at least twice as high as frequency audio frequency to be digitized

60
Q

the number of dBs between line level and distortion is called?

A

head room

61
Q

which of the following represents a doubling o the voltage in a system?

A

+6dBu

62
Q

The most common professional 2 channel digital protocol is?

A

AES/EBU

63
Q

which of the following audio file formats is not a lossy codec?

A

WAV

64
Q

dBm is a measurement of?

A

power

65
Q

dBu is a measurement of?

A

volts

66
Q

positioning a mixing console fader to “0” will best result in?

A

no audio passing through

67
Q

the number of dB between line level and noise is called?

A

signal to noise ratio

68
Q

a ratio of 2 watts to 1 watt would be?

A

3dB

69
Q

in PCM systems the signal to noise ratio is improved by now many dB per bit?

A

6dB

70
Q

when discussing dynamic range, what reference level is mostly used?

A

o dB SPL

Copyright (12 decks)

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