Data Representation

1. What is the unit used to measure sample rate in digital audio?

• Bits per second

• Bytes per second

• Hertz (Hz)

• Decibels (dB)

2. How does bit depth affect digital sound?

• It reduces background noise

• It changes the speed of sound waves

• It affects the pitch of the sound

• It determines the number of voltage values that can be represented

3. What does bit depth in images determine?

• The number of frames per second

• The number of pixels in an image

• The number of sound frequencies

• The number of colors that can be represented

4. What is required to convert analogue sound into digital data?

• A speaker and a digital converter

• A microphone and an analogue to digital converter (ADC)

• A digital amplifier and a microphone

• A binary translator and a speaker

5. What role does the ADC play in sound digitization?

• It converts the sound wave directly into a digital file

  time

• It samples the voltage of the signal at regular points in

• It converts digital data back into analogue sound

• It increases the amplitude of the sound wave

6. What is the term used to describe the height of a sound wave?

• Wavelength

• Amplitude

• Frequency

• Pitch

7. What does the width of the waves in a sound wave indicate?

• The volume of the sound

• The pitch of the sound

• The length of the sound

• The speed of the sound

8. What will be the output of the given image?

• 000000

  010010

  010010

  000000

  011110

  000000

• 111111

  101101

  101101

  111111

  100001

  111111

• 1000000

  0010010

  1010010

  1000000

  0011110

  1000000

• 00000

  01001

  01001

  00000

  01111

  00000

9. Complete the table shown in the image.

• 3

• 4

• 5

• 6

10. Convert 36 into binary number.

• 100001

• 100100

• 011011

• 111000