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