Subband extraction and insertion

get_subband(w,l,n) Returns the nth block of wavelet packet coefficients at level l extracted from the wavelet packet transform w.

put_subband(w,l,n,y) Returns the result of inserting the vector y into the nth block of wavelet packet coefficients at level l of the wavelet packet transform w.

Arguments:

• w is a vector whose length is at least 2^l.
• l is an integer.
• n is an integer less than 2^l.
• y is a vector the same length as the vector returned by get_subband.

Mathcad Example

Mathcad Example