Question Detail

PHY 104 Pitch, loudness, quality, timber Objective Question
Take CBT

Question

What is a notable characteristic shared by the units of sound intensity such as the decibel, bel, and neper?
Options
A They are all dimensionless.
Correct Answer
B They all measure absolute power.
C They are all logarithmic scales in base e.
D They are only used for electrical signals, not sound.
Correct Answer

Option A is the correct answer.

Detailed Explanation

The text explicitly states, 'Notice that all these units are dimensionless.' This is because they represent a ratio of two quantities with the same units, making the units cancel out.

Hint

Consider that these units are often derived from ratios of intensities or powers.

Question Info

Course: PHY 104
Topic: Pitch, loudness, quality, timber
Type: Objective
Difficulty: Not specified
Question 412 of 947
Previous Course Details Next