Howtosignalprocessing
- What are harmonics in signal processing?
- What causes harmonics in a signal?
- What is a harmonic process?
- What are harmonics in FFT?
What are harmonics in signal processing?
A harmonic is a wave or signal whose frequency is an integral (whole number) multiple of the frequency of the same reference signal or wave. As part of the harmonic series, the term can also refer to the ratio of the frequency of such a signal or wave to the frequency of the reference signal or wave.
What causes harmonics in a signal?
Harmonics are the result of nonlinear loads that convert AC line voltage to DC. Harmonics flow into the electrical system because of nonlinear electronic switching devices, such as variable frequency drives (VFDs), computer power supplies and energy-efficient lighting.
What is a harmonic process?
Harmonic motion refers to the motion an oscillating mass experiences when the restoring force is proportional to the ​displacement, but in opposite directions. Harmonic motion is periodic and can be represented by a sine wave with constant frequency and amplitude.
What are harmonics in FFT?
Chapter 11: Fourier Transform Pairs. Harmonics. If a signal is periodic with frequency f, the only frequencies composing the signal are integer multiples of f, i.e., f, 2f, 3f, 4f, etc. These frequencies are called harmonics.
