GCSE J277 - 1.2.4 - Representing Sound Files
Authored by Paul Greenwood
Computers
7th Grade
Used 75+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is analogue sound?
Recording sound as 1s and 0s
Recording audio in a format of continuous waves
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What does digital sound mean?
Soundwaves
Sound represented as binary values
Sound represented as denary values
Sound that humans emit
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What does sampling rate mean?
The number of times a digital signal is sampled per second
The number of times sound is sampled per second
The number of times analogue sound is sampled per second
The unit of frequency for digital sound
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the unit of frequency used in sound files?
Bits
Hertz
Hz
Binary
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
How is bit rate calculated?
Bit Depth * Sample Rate
Bit Depth / Sample Rate
Bit Depth * Sample Rate * Channels
Bit Depth * Sample Rate / Channels
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
MP3_1 has a sample rate of 50Hz, MP3_2 has a sample rate of 20Hz. Which is the higher quality?
MP3_1
MP3_2
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
MP3_1 has a sample rate of 50Hz, MP3_2 has a sample rate of 20Hz. Which is the larger file size
MP3_1
MP3_2
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