Ch. 16 Physics: Dynamic Range

Question 1

A method of describing the extent a signal can vary while maintaining accuracy.

“number of available choices”

Answer 1

Dynamic Range

Question 2

This is an example of what? Scale that can only accurately weigh objects between 30lbs and 300lbs

Answer 2

Dynamic range

Question 3

How is dynamic range measured?

Answer 3

dB

Question 4

The dynamic range of information _______ the more it is processed.

Answer 4

decreases

Question 5

What is the dynamic range of a transducer?

Answer 5

120dB

Question 6

What is the dynamic range of the reciever?

Answer 6

100 - 120dB

Question 7

What is the dynamic range of the scan converter?

Answer 7

40 - 50dB

Question 8

What is the dynamic range of the display?

Answer 8

20 - 30dB

Question 9

What is the dynamic range of the archive?

Answer 9

10 - 30dB

Question 10

a technique that reduces dynamic range of a signal without introducing errors.

Answer 10

Compression

Question 11

What are the requirements of compression?

Answer 11

Largest signal remains largest

Smallest signal remains smallest

The range of signals is reduced

Question 12

Narrow dynamic range =_______________

Answer 12

fewer shades of gray

Question 13

Wide dynamic range = _______________

Answer 13

many shades of gray

Question 14

Narrow dynamic range is what kind of image? Does it have high or low contrast?

Answer 14

Bistable

High contrast

Question 15

Wide dynamic range has what kind of image? Does it have high or low contrast?

Answer 15

Gray scale

Low contrast