# Translations:Nonminimum-delay wavelet/1/en

What is the structure of a nonminimum-delay wavelet? Let the signature be the real-value, finite-length, nonminimum-delay wavelet . Let us call anything that has a flat magnitude spectrum white and anything that has a curved magnitude spectrum colored. The canonical representation is the key to signature deconvolution. The *canonical representation* states that a given nonminimum-delay wavelet *s* is equal to the convolution of (1) its minimum-delay counterpart *b*, which is a wavelet with the same color as the given nonminimum-delay wavelet *s* but with a minimum-phase spectrum, and (2) the all-pass wavelet *p*, which has a white (i.e., flat) magnitude spectrum and which carries the extra phase. The canonical representation of the signature is given by