What is T.H.D. (Total Harmonic Distortion)?
We have already made brief mention of total harmonic distortion (THD) in another article. Without now making this too complicated, total harmonic distortion is the relationship between the original signal (fundamental) and the sum of the signals produced by the acoustic transducer itself or signals produced through housing parts (harmonics), signals that were not present in the original signal. Since the total harmonic distortion is always less than or equal to 1, it is usually specified as a percentage. The lower this value is, the fewer harmonics are generated by the acoustic transducer and/or housing parts, which is exactly what we want. This is because we have little to no control over the harmonics – if they exist – and they do not belong to the original signal.
