INTERCOMMUNICATION SYSTEM AND MRI DEVICE

摘要

PROBLEM TO BE SOLVED: To allow an operator to clearly hear the voice of a subject. SOLUTION: A false noise signal Pn is generated in synchronization with a gradient pulse control signal Gs adapted for generating a gradient magnetic field. The false voice signal Pn is subtracted from a voice signal Ms wherein the voice Vi of a subject (h) is superimposed on noises N. Voice Vo is output from a speaker 8 in accordance with the subtraction result. Since the noises N are canceled out and only the voice Vi of the subject (h) remains as the subtraction result, an operator can clearly hear the voice Vi of the subject (h).