PC2: dB Math

Question 1

A logarithmic unit used to measure signals and communication

Answer 1

Decibel

Question 2

Turns exponential changes into linear changes

Linear scales increment by a constant: 1, 2, 3, 4, etc.
Logarithmic scales increase by a factor of the base: 1, 10, 100, 1000, etc.

Answer 2

Logarithmic Scaling

Question 3

Express a ratio relative to a reference value on a logarithmic scale

Answer 3

Decibel

Question 4

Express a ratio relative to a reference value

Note: Makes large and small numbers more manageable

Answer 4

Decibel

Question 5

Unitless ratios representing increases or decreases in values

Answer 5

Decibel

Question 6

For every 10 dB increase, the signal strength (linear value) is?

Answer 6

Multiplied by 10

Question 7

For every 10 dB decrease, the signal strength (linear value) is?

Answer 7

Divided by 10

Question 8

For every 3 dB increase, the signal strength is?

Answer 8

Doubled

Question 9

For every 3 dB decrease, the signal strength is?

Answer 9

Halved