Signal processing method, signal processing system, and signal processing program

A signal processing system in a measuring system, the measuring system including a thermoelectric conversion unit configured to convert a temperature gradient generated by heat exchange with an object to be measured into an electrical signal on the basis of the anomalous Nernst effect,

• the signal processing system comprising:
• a modulator configured to generate a modulated signal by introducing a modulation including a predetermined modulation frequency into the electrical signal outputted from the thermoelectric conversion unit, wherein the modulation frequency is a frequency outside a frequency band of the thermoelectric conversion unit;
• and
• an extractor configured to extract a signal of a component of the modulation frequency from the modulated signal.

A non-transitory computer-readable memory medium storing a signal processing program in a measuring system, the measuring system including a thermoelectric conversion unit configured to convert a temperature gradient generated by heat exchange with an object to be measured into an electrical signal on the basis of the anomalous Nernst effect,

• the signal processing program being configured to cause at least one computer to perform:
• a modulation step of generating a modulated signal by introducing a modulation including a predetermined modulation frequency into the electrical signal outputted from the thermoelectric conversion unit, the modulation frequency being a frequency different from a frequency band of the thermoelectric conversion unit;
• and
• an extraction step of extracting a signal of a component of the modulation frequency from the modulated signal.