Total Harmonic Distortion (THD) is a measure used to quantify the distortion of a signal due to harmonics. It is particularly relevant in the fields of electronics, audio engineering, and telecommunications. THD is defined as the ratio of the sum of the powers of all harmonic components (frequencies that are integer multiples of a fundamental frequency) to the power of the fundamental frequency itself.
A lower THD value indicates a cleaner and more accurate representation of the original signal, while a higher THD value indicates greater distortion. In audio applications, high THD can lead to a degradation in sound quality, while in power systems, it can affect the efficiency and performance of electrical devices. THD is an important parameter in evaluating the performance of amplifiers, speakers, and other audio equipment, as well as in power electronics.
