What is the measure of the height of a sound wave in decibels known as?

The height of a sound wave, measured in decibels, refers to its amplitude. Amplitude is a key characteristic of sound waves that relates to how much energy the wave carries. In sound, larger amplitudes correspond to louder sounds, which is why amplitude is often associated with loudness.

Understanding this, when a sound wave has a greater amplitude, it produces a higher decibel level, indicating a louder perception of sound to the human ear. In contrast, frequency describes the number of wave cycles per second and is related to the pitch of the sound, rather than its loudness. Loudness, while related to amplitude, is a subjective measure of how we perceive sound intensity, but it is not itself a measurement in decibels.