Unit 1.2 - Data Storage MCQ L4

What unit is sample rate measured in? (1-4)

• Bits per second (bps)

• Hertz (Hz)

• Megabits per second (Mbps)

Which of the following is not true if you increase the sample rate? (3-6)

• Better quality of recording

• Needs greater storage space

• larger file size

• Decrease in quality

What is meant by bit depth? (3-6)

• The number of samples taken per second

• The amplitude of each sample

• The number of bits used per second of audio

• The number of bits used to store each sound sample

What is measured when the wave is sampled? (3-6)

• Amplitude

• Hertz

• Bit rate

• Frequency

What sample rate is used for CD quality sound? (6-8)

• 44,100 Hz

• 88,200 Hz

• 22,100 Hz

The purpose of a Digital to Analogue converter is to… (6-8)

• convert binary data into analogue form so we can hear it via a speaker

• convert sound waves into binary so it can be understood by a computer

What piece of hardware would you use to input sound into a computer? (1-3)

• Speaker

• Analogue to digital converter

• Microphone

• Digital to analogue converter

If you increase the bit depth of an audio file, you increase the quality. (1-4)

• True

• False

The amplitude of a sound wave is… (6-9)

• how high the wave is from the crest or trough

• the frequency at which it is sampled

• the speed at which it travels through air