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Introduction To Digital Audio - 3.01
Test Description: Enjoy learning the vocabulary for audio while playing an engaging game.
Instructions: Answer all questions to get your test result.
1) _________ vibrations that travel though the air or some other medium
A
Frequency
B
Decibels
C
Audacity
D
Sounds
2) A ________ _________ is an audible vibration that travels through air or water.
A
trough
B
frequency
C
crest
D
sound wave
3) Decibels (dB)
A
The loudness or intensity of a sound is measured in ________
B
Vibrations that travel though the air or some other medium are _________.
C
The frequency of a sound is measured in _______.
D
Point that exhibits maximum amount of upward displacement from the rest position are _________.
4) The frequency of a sound is measured in ___________
A
Decibels (dB)
B
Frequency
C
Crest
D
Hertz (Hz). 1000 Hertz=Kilohertz (kHz)
5) Point that exhibits maximum amount of upward displacement from the rest position are called ________.
A
Trough:
B
Audacity
C
Wavelength:
D
Crest
6) Trough is defined as:
A
Point that exhibits maximum amount of upward displacement from the rest position
B
Point that exhibits maximum amount of downward displacement from the rest position.
C
Distance from rest to crest or rest to trough.
D
Distance from crest to crest.
7) Distance from crest to crest is called _________.
A
Frequency
B
Crest
C
Trough
D
Wavelength
8) Amplitude is defined as_________
A
Point that exhibits maximum amount of downward displacement from the rest position.
B
Number of waves to pass a point in one second. (How Fast)
C
Distance from rest to crest or rest to trough.
D
Distance from crest to crest.
9) Number of waves to pass a point in one second (how fast) is called ______
A
Crest
B
Frequency
C
Pitch
D
Amplitude
10) What is a pitch?
A
Point that exhibits maximum amount of upward displacement from the rest position.
B
Number of waves to pass a point in one second. (How Fast)
C
Number of waves to pass a point in five second. (How Slow)
D
Quality of a sound determined by the rate of vibration. The degree of highness or lowness of a tone. (How High)
11) Analog sound is
A
converts electrical energy to binary code (1’s and 0’s) that is readable by computers.
B
can only deal with discrete information.
C
a point that exhibits maximum amount of upward displacement from the rest position.
D
a continuous phenomena, such as speaking or an electrical pulse from an instrument
12) Sampling is _____
A
the number of computer bits that are conveyed or processed per unit of time
B
when computers can only deal with discrete information, so analog sound must be converted to digital.
C
The rate or frequency at which a sound is sampled and does not digitize it.
D
The rate or frequency at which a sound is sampled to digitize it.
13) _________ is changing the volume of selected audio
A
Channel
B
Amplify
C
Trim
D
Waveform
14) The rate or frequency at which a sound is sampled to digitize it. Measurements of a sound wave over time measured in Hz (cycles/sec) is__
A
Sample rate
B
Bit Rate
C
Crest
D
Amplitude
15) The number of computer bits that are conveyed or processed per unit of time is _____ ______
A
bit rate
B
decibels
C
sample rate
D
pitch
16) Waveform is
A
a visual representation of an audio signal.
B
an area upon which audio moves. It may be a single waveform or could be made up of clips.
C
is a short segment of audio. It can be combined with others to make an audio track.
D
Normally expressed in kilobits per second (kbps).
17) _________is a short segment of audio. It can be combined with others to make an audio track.
A
Channel
B
Waveform
C
Track (Channel)
D
Clip
18) __________ is an area upon which audio moves. It may be a single waveform or could be made up of clips.
A
Clip
B
Editing
C
Waveform
D
Track
19) Channel is defined as _____
A
reproduction of sound using two or more independent audio channels.
B
change the volume of selected audio
C
change the color of the selected picture
D
removes everything from the left and right of selected audio.
20) There are four audio file formats. They are: _____. _____, ______ ,_____
A
.wav, mp3. .aiff. .ogg
B
.bye. . hi. .mp4, psp
C
.ai, .psd, .svg, .wav
D
.wav
*select an answer for all questions
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