Howtosignalprocessing
- What is harmonic distortion in signal?
- How do you measure the distortion of a sine wave?
- What does total harmonic distortion tell you?
What is harmonic distortion in signal?
Harmonic distortion is the presence of frequencies in the output of a device that are not present in the input signal, and are multiples of components of the input signal.
How do you measure the distortion of a sine wave?
Harmonic distortion may be measured by applying a spectrally clean sine wave voltage signal to the input of the amplifier under test (may require a band pass or low pass filter if the excitation RF source has high harmonic output content).
What does total harmonic distortion tell you?
Total harmonic distortion (THD) is a measurement that tells you how much of the distortion of a voltage or current is due to harmonics in the signal. THD is an important aspect in audio, communications, and power systems and should typically, but not always, be as low as possible.
