Some Production Aspects of Binaural Recording for Sound Motion Pictures<!--<xref ref-type="other" rid="fn1-10.5594_J14639">*</xref>-->

Abstract

The binaural effect, while of great importance in our day-to-day life, has been an unexplored field in our conventional monaural sound motion picture which, despite our other technical advances, remains incapable of the quality called sound “perspective.” — To achieve the missing quality, it is important that controllably variable perspective effects be attainable for the release print from an original having different perspective quality. This is necessary not only to make the sound recorded on a three-walled set simulate the sound from a six-sided room, but also to make the recorded sound correspond satisfactorily with the view portrayed by the camera. — A new system is described that not only fulfills these fundamental requirements, but also is capable of controllably producing at will the various perspective and quality-change effects in a simple dubbing operation from a source having no perspective characteristics such as a conventional monaural sound-track. The new method may be introduced step by step into our present production system without material obsolescence of either films or equipment.