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