How is sound frequency (pitch) measured?

Sound frequency, or pitch, is measured in Hertz (Hz), which indicates the number of cycles per second of a sound wave. The higher the frequency, the higher the pitch that is perceived by the human ear. For example, a frequency of 440 Hz corresponds to the musical note A above middle C, a standard reference pitch.

Other units mentioned, such as decibels, measure the intensity or loudness of sound rather than its frequency. Kelvin is a unit that measures temperature, and watts refer to power. Therefore, Hertz is the sole measurement that specifically quantifies how often sound waves oscillate in a given time frame, thereby defining pitch. Understanding this distinction is crucial for applications in acoustics, audio engineering, and interior design where sound quality is considered.