Frequency, in the context of sound, is measured in which unit?

Frequency, in the context of sound, refers to the number of cycles of a wave that occur in a given unit of time, typically measured in seconds. The standard unit for frequency is Hertz (Hz), which represents one cycle per second. For example, a sound wave with a frequency of 440 Hz means that the wave completes 440 cycles in one second.

This measurement is crucial in the field of acoustics, as it directly correlates to the pitch of the sound; higher frequencies correspond to higher pitches, while lower frequencies correspond to lower pitches. Thus, understanding frequency and its measurement in Hertz is fundamental in areas such as music, audio engineering, and physics, making Hertz the correct and most relevant unit for this context.

Decibels measure sound intensity or loudness, Pascals are units of pressure, and Joules measure energy, all of which relate to sound but do not define its frequency.