Representing Audio

What is the primary purpose of an analogue to digital converter (ADC) in sound processing?

• To amplify sound signals

• To convert sound waves into digital data

• To store sound in analogue format

• To increase the frequency of sound waves

Which of the following is a common digital audio format?

• MP3

• Vinyl

• Cassette

• CD-R

What does the sampling rate of a digital audio file refer to?

• The number of bits used to represent each sample

• The number of samples taken per second

• The duration of the audio file

• The volume level of the audio

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

• Hertz (Hz)

• Decibels (dB)

• Metres per second (m/s)

• Bits per second (bps)

What is bit depth in digital audio?

• The number of audio channels

• The number of bits used to represent each audio sample

• The frequency of the audio signal

• The length of the audio file

Which property of a sound wave is related to its loudness?

• Frequency

• Amplitude

• Wavelength

• Speed

What is the typical bit depth for CD-quality audio?

• 8 bits

• 16 bits

• 24 bits

• 32 bits

Which of the following best describes a sound wave?

• A series of electrical impulses

• A disturbance that travels through a medium

• A static image of sound

• A digital representation of sound

What is the effect of increasing the sampling rate on the quality of digital audio?

• It decreases the quality

• It has no effect on the quality

• It increases the quality

• It distorts the audio

Which of the following is NOT a property of sound waves?

• Frequency

• Amplitude

• Colour

• Wavelength