AFOQT Practice Test

Which wave property describes how high or low a sound is perceived?

1. Amplitude

2. Frequency

3. Wavelength

4. Period

The correct answer is: Frequency

The property that describes how high or low a sound is perceived is frequency. Frequency refers to the number of oscillations or cycles of a sound wave that occur in a given amount of time, typically measured in Hertz (Hz). Higher frequency sounds correspond to higher pitches, while lower frequency sounds produce lower pitches. This relationship between frequency and pitch is fundamental in understanding audio perception. Amplitude, on the other hand, is related to the loudness of a sound, as it indicates the strength or intensity of the wave. Wavelength is the distance between consecutive points of similar phase in the wave, such as from crest to crest, which also relates to frequency but does not directly influence the perception of pitch itself. The period is the duration of one cycle of the wave and is inversely related to frequency but does not describe how sound is perceived in terms of pitch. Understanding frequency is key to mastering concepts related to sound in various contexts, such as music, acoustics, and sound engineering.