Local cosine transforms

lct(a,n,f) Returns the n-level local cosine packet table for the data array a using data taper function f.

ilct(w,n,b,f) If w is an array of cosine packet coefficients constructed from a cosine packet table with n levels, returns the inverse cosine packet transform with respect to the basis specified by b, using data taper function f.

cpt(a,n) Returns the n-level local cosine packet table for the data array a.

icpt(w,n,b) If w is an array of cosine packet coefficients constructed from a cosine packet table with n levels, returns the inverse cosine packet transform with respect to the basis specified by b.

Arguments:

Notes:

Mathcad Example