Similarity information determination device, similarity information determination method, autocorrelation information determination device, cross-correlation information determination device and computer program

摘要

PROBLEM TO BE SOLVED: To determine an apparatus, a method and a program for determining similarity information based on one or more input signals, an apparatus for determining autocorrelation information, an apparatus for determining cross-correlation information, and low computational complexity. A highly robust correlation method is provided. An apparatus 100 for determining similarity information based on one or more input signals determines the number of zero crosses in each portion of at least one plurality of portions of the one or more input signals. It is composed of a determinant 110 that determines the zero-cross information to be described, and a comparator 120 that performs a comparison based on the zero-cross information to determine the similarity information. [Selection diagram] Fig. 1