Asked by Alexandra Morrow on Apr 26, 2024
Verified
What is true of the amplitude of a sound wave?
A) It is inversely proportional to the sound wave's wavelength.
B) It corresponds to the psychological dimension of loudness.
C) It corresponds to the psychological dimension of pitch.
D) It is measured in units called hertz.
Amplitude
In signal processing, amplitude refers to the magnitude or intensity of a signal's fluctuation or variation, often measured in terms of the signal's peak value.
Loudness
A perceptual attribute of sounds that is primarily a physiological correlate of sound pressure level, measured in decibels.
Pitch
The perception of how high or low a sound is, depending on the frequency of the sound wave.
- Master the essential principles governing how we perceive sound, focusing on the connection between frequency, pitch, amplitude, and loudness.
Verified Answer
SK
Sarah KathleenApr 30, 2024
Final Answer :
B
Explanation :
The amplitude of a sound wave corresponds to the psychological dimension of loudness, which is the perceived magnitude or intensity of a sound. This is in contrast to the wavelength, which is a physical property of the wave and is inversely proportional to its frequency (not amplitude) according to the wave equation. Pitch is also a psychological dimension of sound, but it corresponds to the frequency of the wave (not amplitude). Hertz (Hz) is a unit of frequency (cycles per second), not amplitude.
Learning Objectives
- Master the essential principles governing how we perceive sound, focusing on the connection between frequency, pitch, amplitude, and loudness.