Sound File Size and Playback Quality (AQA GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is sample rate in digital sound recording?
What is sample rate in digital sound recording?
How many times per second sound is measured
What unit is used to measure sample rate?
What unit is used to measure sample rate?
Hertz (Hz)
What sample rate does a standard music CD use?
What sample rate does a standard music CD use?
44.1 kHz
What happens when you increase the sample rate of a recording?
What happens when you increase the sample rate of a recording?
Better quality and larger file size
What does sample resolution (bit depth) measure?
What does sample resolution (bit depth) measure?
How precisely amplitude is represented
What sample resolution does a typical CD use?
What sample resolution does a typical CD use?
16-bit
How many different digital values can 16-bit resolution represent?
How many different digital values can 16-bit resolution represent?
65,536
How does duration affect file size?
How does duration affect file size?
Linear - double length doubles size
What formula calculates sound file size in bits?
What formula calculates sound file size in bits?
Sample rate × resolution × duration
How do you convert file size from bits to bytes?
How do you convert file size from bits to bytes?
Divide by 8
How does stereo recording affect file size compared to mono?
How does stereo recording affect file size compared to mono?
Double the size
What is the main trade-off with higher quality sound settings?
What is the main trade-off with higher quality sound settings?
Better sound but larger file sizes