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Take a 18 question quiz to test and certify your knowledge of the tutorial-video course
AudioPedia 103 - Digital Audio Terms and Standards.
Get a mark of 80% or higher to pass this quiz!
1
The Nyquist Rule says that the Sample Rate...
must be at least half the highest audio frequency
should always be 44.1 kHz
must be exactly equal to the highest audio frequency
must be at least twice the highest audio frequency
2
An ADC...
converts PCM audio to MP3
converts analog signals to digital
converts digital signals to analog
is an Australian hard rock band
3
Dither is...
bad
random noise added to a digital recording
digital distortion from poor analog-to-digital conversion
varying sample rates in multitrack audio ADCs
4
A DAC...
converts MIDI to audio
converts PCM audio to AAC
converts digital signals to analog
converts analog signals to digital
5
A codec is...
an encode-decode formula for reducing audio file size
a digital database for different styles of music
a processor used in the creation of LPCM audiofiles
a MIDI controller
6
Current lossy codecs for audio files include...
AIFF, WAV
MP3, MP4, AAC
ALAC, FLAC
PCM, LPCM
7
The current standard method of oversampling is casually referred to as...
AC/DC sampling
lossy sampling
ADC sampling
1-bit sampling
8
Quantization distortion is...
consistent low-level distortion in a digital recording
harsh digital clipping of the audio wave
analog distortion associated with vacuum tube amplifiers
gradual clipping of the audio wave in the ADC
9
Perceptual coding (used in lossy audio codecs) makes use of...
the Nyquist theory
the psychoacoustic phenomenon of pitch-detection
the psychoacoustic phenomenon of pitch quantization
the psychoacoustic phenomenon of masking
10
Common bitrates for lossy audiofiles range from...
1-10 Mbps
128–256 Mbps
16-24 Mbps
1,411-2.116 Mbps
11
The two most common Linear PCM audiofile formats are:
MP3 & MP4
WAV & AIF
Lossless and MP3
WAV & AAC
12
The two standard Sample Rates are...
88.2 kHz and 96 kHz
50 kHz & 100 kHz
22.05 kHz & 24 kHz
44.1 kHz & 48 kHz
13
A common standrad for "hi-res' digital audio is...
16/44.1
16/48
16/192
24/96
14
For modern DAWs, the standard bit resolution is...
24-bit
48-bit
16-bit
8-bit
15
In an Analog-to-Digital Converter, Sampling...
generates a string of binary numbers
genererates MIDI data
registers the changing amplitude of an analog wave at discrete points in time
quantizes an analog wave
16
Digital audio represents the audio signal...
in 3D
with a smooth continuous voltage
with pictograms
with a string of binary numbers
17
In a traditional ADC, an Anti-Aliasing filter...
a 2-pole lowpass filter
is a brickwall lowpass filter
is a 4-pole lowpass filter
is a brickwall highpass filter
18
In an ADC, Quantization...
filters the analog wave before sampling
corrects the timing of the incoming analog wave
generates a string of binary numbers
corrects the timing of the incoming MIDI notes
AudioPedia 103
Digital Audio Terms and Standards
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