Signal extracting apparatus

A signal extracting apparatus, comprising:

• (a) a single-signal input unit to input a single time-series signal;
• (b) a reference signal creating unit to create a reference signal;
• and
• (c) a main processing unit to perform independent component analysis with reference for a single measured signal by capturing the reference signal obtained by the reference signal creating unit and providing timing-axis information for an algorithm in a reference system to extract an independent component.

A signal extracting program for a computer, comprising the steps of:

• inputting one or more time-series signals in which elements are arranged in temporal order;
• generating a plurality of short time-series signals by selecting the elements from the time-series signals, wherein at least one time-series signal generates two or more short time-series signals where the selected elements have different but partially overlapping temporal ranges with each other;
• creating a reference signal indicating a temporal characteristic of an independent signal to be extracted;
• and
• performing independent component analysis with reference for a plurality of the short time-series signals generated at the generating step based on the reference signal to extract the independent signal.

A signal extracting method for a computer, comprising the steps of:

• inputting one or more time-series signals in which elements are arranged in temporal order;
• generating a plurality of short time-series signals by selecting the elements from the time-series signals, wherein at least one time-series signal generates two or more short time-series signals where the selected elements have different but partially overlapping temporal ranges with each other;
• creating a reference signal indicating a temporal characteristic of an independent signal to be extracted;
• and
• performing independent component analysis with reference for a plurality of the short time-series signals generated at the generating step based on the reference signal to extract the independent signal.