J277 - 1.2 - Sound

What is the primary function of an Analogue-to-Digital Converter (ADC) in the context of sound recording?

• To amplify the sound wave

• To measure the amplitude of the sound wave at regular intervals

• To convert digital signals back to analogue

• To increase the frequency of the sound wave

What does the term "sampling rate" refer to in digital sound processing?

• The speed at which sound travels

• The number of times the ADC measures the sound wave each second

• The volume level of the sound

• The duration of the sound recording

In what unit is the sampling rate measured?

• Decibels (dB)

• Hertz (Hz)

• Metres per second (m/s)

• Bits per second (bps)

What does a higher sampling rate imply about the sound recording?

• It captures more detail of the sound wave

• It reduces the file size

• It increases the pitch of the sound

• It decreases the sound quality

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

• The number of times a sound wave is sampled per second

• The number of bits used to store each sample's value

• The frequency of the sound wave

• The length of the sound recording

How does a higher bit depth affect the sound recording?

• It allows for a wider range of possible values, leading to a more accurate representation of the sound wave's amplitude

• It decreases the file size

• It increases the speed of sound

• It reduces the sampling rate

If a sound wave is sampled at 44,100 Hz, how many times per second is the sound wave measured?

• 4,410 times

• 44,100 times

• 441 times

• 44 times

Which of the following is NOT a factor in determining the quality of a digital sound recording?

• Sampling rate

• Bit depth

• Colour of the sound wave

• Type of ADC used

What is the effect of using a low sampling rate in sound recording?

• It captures more detail of the sound wave

• It results in a less detailed representation of the sound wave

• It increases the bit depth

• It improves the sound quality

Which of the following best describes the process of converting an analogue sound wave into a digital format?

• Digital-to-Analogue Conversion

• Analogue-to-Digital Conversion

• Frequency Modulation

• Amplitude Modulation