Applications of Blumlein Shuffling to Stereo Microphone Techniques
Michael Anthony Gerzon · Journal of the Audio Engineering Society · 1994
Between 1931 and 1934 Blumlein proposed using a pair of identical ear spaced microphones pointing in the same direction with a shuffling network to create stereo. Although Blumlein shuffled stereo techniques have never been used commercially, they have unique advantages. Various implementations and uses are described, including improved results from dummy head and theile sphere microphones and uses with boundary layer, cardioid, and shotgun microphones