(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).

plural of transformation matrix

plural of transformation matrix

(linear algebra) A matrix (of dimension n×m) that represents some linear transformation from ℝᵐ→ℝⁿ.

(signal processing) A special case of the short-time Fourier transform, used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time.

(mathematics) A transform used in Borel summation. / (mathematics) A generalization of this in Nachbin's theorem.

plural of Helmert transformation

A kind of transformation in three-dimensional space, frequently used in geodesy to avoid distortion when converting from one datum to another.

Synonym of Hadamard transform

A transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while galvanically isolating the device from the power source, usually for safety reasons.