Abstract
The purpose of this chapter is to introduce a class of nonsinusoidal orthogonal functions which consists of: (1) Rademacher functions, (2) Haar functions, and (3) Walsh functions. These orthogonal functions consist of either square or rectangular waves. Individual functions belonging to such sets of functions are distinguished by means of a parameter called sequency. Some aspects pertaining to notation for representing nonsinusoidal orthogonal functions are also discussed.
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References
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Ahmed, N., Rao, K.R. (1975). A Class of Orthogonal Functions. In: Orthogonal Transforms for Digital Signal Processing. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-45450-9_5
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DOI: https://doi.org/10.1007/978-3-642-45450-9_5
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