Hadamard transform

== English == === Etymology === Named for the French mathematician Jacques Hadamard. === Noun === Hadamard transform (plural Hadamard transforms) (signal processing) A generalized Fourier transform that performs an orthogonal, symmetric, involutive, linear operation on 2m real numbers (or complex numbers, although the Hadamard matrices themselves are purely real). Synonym: Walsh transform ==== Derived terms ==== pseudo-Hadamard transform