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