Phasor Analysis of Some Stereophonic Phenomena

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Abstract
An improved understanding of some stereophonic phenomena may be obtained by use of acoustical pressure phasors to portray sound pressure at the ears of the observer. With the help of phasors it is possible to expand and modify certain conclusions of previous observers, and to validate some previously unpublished observations; stereophonic “law of sines” is derived. The existence and location of “out‐of‐bounds” stereo‐phonic image is analyzed and verified. The “allowed maximum out‐of‐phase ratio” is derived, together with the observation that this maximum is exceeded by certain microphone arrays. The motion and elevation of the center image in stereophonic reproduction is observed and explained.

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