Single-Element Unidirectional Microphone
Harry F. Olson, John Preston · Journal of the Society of Motion Picture Engineers · 1949
A single-element unidirectional microphone has been developed for use in sound motion picture recording with the following characteristics: single-ribbon type; the back of the ribbon is coupled to a damped folded pipe and an acoustical impedance in the form of an aperture; improved cardioid directional pattern; greater output; reduced weight; and reduced wind-noise response.