Memory signals are like signals seen before, but using memory references to implement delay lines, recursions, and sharing of common subexpressions. During the compilation signals are translated to memory signals.
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$k$ is a number (integer or real) -
$u$ is a user interface element (slider, button, etc.) -
$\ain{c}$ is the input channel$c$ -
$\star(M_1,M_2,...)$ is a numerical operation on signals -
$t$ : is a scalar memory reference corresponding to the current time -
$m$ : is a scalar memory reference corresponding to a signal -
$v[M_1,M_2]$ is a vector memory reference where$M_1$ is the time and$M_2$ the delay.