Sound and Compression
Quiz
•
Computers
•
9th - 11th Grade
•
Practice Problem
•
Medium
Paul Greenwood
Used 30+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An analogue to digital converter takes the analogue singal from a microphone and converts it to a rapid sequence of digital values. This process is called...
tasting
sampling
measuring
frequency
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which of the following are sound file types?
MP3
FLAC
AAC
JPEG
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
File compression is used to...
make file sizes smaller
stop people pirating music
to prevent files being edited
annoy people
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
File compression can be lossy or lossless. Lossy compression works by removing or simplifying some of the detail from image or sound data so that the file becomes smaller. How does a lossless compression reduce file size?
It removes and throws away some of the information.
It converts repeating values into an encoded form that takes less space.
It relies upon a link to the internet.
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Reducing file size has the advantages of...
Streaming over the internet is faster for a given bandwidth
Web pages using smaller image files will load quicker
Less storage space is taken up on devices using those files
Decompressing a file increases load on the CPU.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does the bit rate of a sampled sound refer to?
The number of bits used for 1 second of audio
The number of bits used for every sample
The final file size of the sampled sound
The speed at which the sampled sound is played back
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the process called for converting analogue sound into binary (digital format)?
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