Measurement device and measurement method

A measurement method for measuring first transfer characteristics between left and right sound sources and left and right microphones, the method comprising:

• an environmental measurement step of performing first environmental measurement that picks up environmental measurement signals output from the left and right sound sources by use of the left and right microphones and second environmental measurement that picks up sounds by use of the left and right microphones in a state where no sound is output from the left and right sound sources, setting an amplitude level of transfer characteristics measurement signals and a tap length of the first transfer characteristics from the left and right sound sources to the left and right microphones based on results of the first environmental measurement, and measuring second transfer characteristics based on results of the second environmental measurement;
• a transfer characteristics measurement step of measuring the first transfer characteristics by outputting, from the left and right sound sources, the transfer characteristics measurement signals set based on results of the first environmental measurement, and picking up the transfer characteristics measurement signals by use of the left and right microphones, respectively;
• and
• a correction step of correcting a low frequency range of the first transfer characteristics based on the second transfer characteristics.