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Digital Media Sound
Test Description: 1b sound review
Instructions: Answer all questions to get your test result.
1) What is not a type of sound found in a digital media presentation?
A
Music is used for background sound,
B
Sound Effect – used during transitions/sequences or for effect.
C
Narration - a voice recording
D
analog audio recording
2) In most weather conditions, sound waves travel through the air at speeds of about
A
620 miles per hour
B
760 miles per hour
C
670 miles per hour
D
730 miles per hour
3) Can sound travel through space.
A
no
B
yes
4) Sound pressure levels (loudness or volume) are measured in
A
amplitude
B
decibels (dB)
C
16 bits for 65,536 levels
D
8 bits (1 byte) for 256 levels
5) The louder the sound, the larger the
A
The Nyquist Theory
B
Amplitude
C
Hertz
D
Frequency
6) is the power or intensity of the sound.
A
Frequency
B
Hertz
C
Amplitude
7) What is not true about Frequency?
A
is the same as amplitude
B
It is the measure in cycles per second or Hertz (Hz)
C
The higher the frequency, the clearer and sharper the sound
D
is the rate at which the sound is measured.
8) Humans are capable of detecting sound vibrations from
A
20 Hz to 20,000 Hz
B
30 Hz to 30,000
C
40 Hz to 40,000 Hz
9) Stereo has
A
two channels
B
three channels
C
one channel
D
5 channels
10) When taking analog sounds and transferring them to digital- this is called
A
sampling
B
converting
C
analog
D
Transfering
*select an answer for all questions
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