For many applications of coincident stereo or M-S recording, a stereo microphone may be the best choice. A stereo microphone normally embodies two closely spaced capsules arrayed one over the other, with individual pattern adjustment for both capsules and provision for rotating one of the capsules with respect to the other. This degree of electrical and mechanical flexibility is necessary in order to cover all aspects and conditions of coincident recording.

Departing slightly from the notion of capsule coincidence, a number of dual-microphone mounting techniques have been developed for stereo recording and are embodied in acoustically appropriate structures. Most of these are spherical, some purposely ...

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