Magnetic field measuring apparatus and magnetic field measuring method

A magnetic field measuring apparatus comprising:

• processing circuitry configured to,
• sample a signal at a desired sampling frequency, the signal being based on an output voltage from a superconducting quantum interference device configured to detect a magnetic field emanating from a living organism, the desired sampling frequency corresponding to a multiple of a lowest common multiple of a plurality of different sampling frequencies to be used for a corresponding plurality of individual purposes of use related to the living organism, the multiple of the lowest common multiple being a product of the lowest common multiple multiplied by an integer greater than 1;
• convert the sampled signal into digital data;
• obtain a biological magnetic field signal based on a value obtained by integrating the digital data, the biological magnetic field signal indicating the magnetic field emanating from the living organism;
• and
• perform decimation processing on the biological magnetic field signal.