Simple examples of periodic waveforms include the following, where t {\displaystyle t} is time, λ {\displaystyle \lambda } is wavelength, a {\displaystyle a} is amplitude and ϕ {\displaystyle \phi } is phase:
The Fourier series describes the decomposition of periodic waveforms, such that any periodic waveform can be formed by the sum of a (possibly infinite) set of fundamental and harmonic components. Finite-energy non-periodic waveforms can be analyzed into sinusoids by the Fourier transform.
Other periodic waveforms are often called composite waveforms and can often be described as a combination of a number of sinusoidal waves or other basis functions added together.
"Waveform Definition". techterms.com. Retrieved 2015-12-09. http://techterms.com/definition/waveform ↩
David Crecraft, David Gorham, Electronics, 2nd ed., ISBN 0748770364, CRC Press, 2002, p. 62 /wiki/ISBN_(identifier) ↩
"IEC 60050 — Details for IEV number 103-10-02: "waveform"". International Electrotechnical Vocabulary (in Japanese). Retrieved 2023-10-18. https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=103-10-02 ↩