1. A method of imaging a test subject, comprising: providing one or more moveable sensors to sense an attribute of the test subject, the attribute having a tonal noise component and a broadband noise component; providing a rotational sensor to sense a rotational velocity of a rotational element of the test subject; moving each of the moveable sensors along a path while continuously acquiring test data that is indicative of the rotational velocity of the rotational element, sensed attribute, the position, and the orientation of each of the moveable sensors; constructing a set of transfer functions corresponding to points in space that have been visited by the moveable sensors, each of the transfer functions relating the test data of the moveable sensors to the test data of the rotational sensor; and producing a visual representation of the tonal noise component of the attribute in a region adjacent the test subject using the set of transfer functions.