#### Hadamard Matrix

A second-order *Hadamard matrix* may be defined by

*e.g.*,

*mixing and scattering*property of the matrix.

As of version 0.9.30, Faust's `math.lib`^{4.12}contains a function called `hadamard(n)` for generating an
Hadamard matrix, where must be a power of . A
Hadamard feedback matrix is used in the programming example
`reverb_designer.dsp` (a configurable FDN reverberator)
distributed with Faust.

A Hadamard feedback matrix is said to be used in the IRCAM Spatialisateur [218].

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Energy Decay Relief