Signal judgment method, signal judgment apparatus, program, and signal judgment system

A signal judgment apparatus, comprising:

• storage for storing a prediction equation of a model of a signal judgment target associated with a sound noise or vibrations, already-known data for which a type of the sound noise or vibrations is already known, unknown data for which a type of the sound noise or vibrations is already unknown, sample data of a signal that is to be judged, and sample data of a signal that is not to be judged;
• prediction model equation calculator for creating a prediction model equation by calculating a coefficient of an explanatory variable with the use of a degree of similarity or dissimilarity between the already-known data and sample data of a signal that becomes a signal judgment target and/or sample data of a signal that is not a signal judgment target;
• an input unit configured to input an input value to the storage;
• an output value calculator configured to apply and calculate each value of the unknown data to the prediction model equation of a model of the signal judgment target;
• an output unit configured to output the output value;
• and
• a judgment unit configured to measure and/or analyze a type of the unknown data by using the output value.