Understanding Sound in Binary

What is the primary purpose of converting analogue sound to digital format?

• To increase the volume of the sound

• So the analogue sound can be saved and used by digital devices.

• To make the sound more natural

• To change the pitch of the sound

Which of the following best describes the term "sample rate" in digital audio?

• The number of bits used to represent each sample

• The number of times per second the amplitude is measured

• The duration of the audio file

• The frequency of the sound wave

What is "bit depth" in the context of digital audio?

• The number of samples taken per second

• The number of bits used to represent each audio sample

• The length of the audio file in seconds

• The speed at which the audio file is played

How does increasing the sampling rate affect the quality of digital audio?

• It decreases the file size

• It increases the file size and improves audio quality

• It has no effect on audio quality

• It decreases the audio quality

Which of the following is a property of sound waves?

• Amplitude

• Bit rate

• File format

• Compression ratio

What does an analogue-to-digital converter (ADC) do?

• It converts digital signals to analogue signals

• It converts analogue signals to digital signals

• It compresses audio files

• It increases the volume of audio files

Which unit is commonly used to measure the sampling rate of digital audio?

• Hertz (Hz)

• Decibels (dB)

• Bits per second (bps)

• Kilobytes (KB)

What is the effect of increasing the bit depth in digital audio?

• It decreases the file size

• It increases the improves audio quality

• It reduces the dynamic range

• It has no effect on audio quality

A high sample rate typically records...

• 44,200 samples per second

• 44,250 samples per second

• 44,100 samples per second

A medium sample rate typically records...

• 22,200 samples per second

• 22,200 samples per second

• 22,050 samples per second