Homework Assignment 5

What is the minimum sampling frequency that should be used to avoid aliasing if a complex sound has 4 frequency components with frequencies of 200 Hz, 400 Hz, 500 Hz and 800 Hz during the digitization process?
Answer
Selected Answer: E. 1,200 Hz
Correct Answer: E. 1,200 Hz

Question 2
1 out of 1 points

What is the minimum standard sampling frequency that is used to digitize audio signals within the telephone network?
Answer

Selected Answer: C. 8,000 Hz
Correct Answer: C. 8,000 Hz

Question 3
1 out of 1 points

Calculate the quantization error if the actual value of a sample is 4 V and is rounded off to 4.4 V.
Answer

Selected Answer: D. 0.4 V
Correct Answer: D. 0.4 V

Question 4
1 out of 1 points

How can quantization error be reduced during the audio digitization process?
Answer

Selected Answer: C. By assigning more bits per sample
Correct Answer: C. By assigning more bits per sample

Question 5
1 out of 1 points

What is the bandwidth of a signal if it comprises of 4 frequency components with frequencies of 200 Hz, 400 Hz, 500 Hz and 800 Hz?
Answer

Selected Answer: C. 600 Hz
Correct Answer: C. 600 Hz

Question 6
1 out of 1 points

How many μs seconds is 0.000001s?
Answer

Selected Answer: A. 1
Correct Answer: A. 1

Question 7
1 out of 1 points

If the color gamut of a digital camera has only eight colors, ranging from white to black, any image it captures will only contain eight colors.
Answer

Selected Answer: True
Correct Answer: True

Question 8
1 out of 1 points

A digital camera’s color gamut is inversely proportional to the number of bits assigned per pixel.
Answer

Selected Answer: False
Correct Answer: False

Question 9
1 out of 1 points

The number of bits allocated to each pixel is called