METHOD, APPARATUS FOR DETECTING SIGNAL AND COMPUTER READABLE RECORD-MEDIUM ON WHICH PROGRAM FOR EXECUTING METHOD THEREOF

摘要

A method and an apparatus for detecting a signal and a recording medium on which a program for executing the method is recorded are provided to detect a desired signal in noise environment by using a delta spectrum entropy value. A divider(130) divides a received input signal by a frame unit. A converter(140) converts input signals existing in the first and second frames into frequency signals. A production unit(150) produces the first power spectrum information and the second power spectrum information by using the converted frequency signals. An obtaining unit(160) obtains a delta spectrum entropy value corresponding to a difference of the produced power spectrum information. A determining unit(170) compares the delta spectrum entropy value with a threshold value.