The Recording and Re-Recording of Stereophonic Sound for Wide-Screen Motion Pictures

Various methods have been used during the past 14 years in the preparation of sound for release in theaters equipped for stereophonic reproduction; these included the practices involving three microphones and use of time-delay networks from monaural sound, as well as six-track sound. The projection of picture with five-track sound, accompanied by recorded narration, illustrates present-day techniques used in the preparation of six-track sound for 70mm theater releases.