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