The concept of eliminating cross talk in stereo audio reproduction is not a new fad, but rather a longstanding pursuit in the field of audio engineering and high-fidelity audio. It's not necessarily neurotic but rather driven by a desire to improve the accuracy and realism of stereo sound reproduction.
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Stereo Microphone Techniques: Engineers have used various microphone techniques, such as the ORTF or XY stereo techniques, to capture stereo sound without cross talk. These techniques involve carefully positioning microphones to create a more accurate stereo image.
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Acoustic Separation: Some studios employ physical barriers or acoustic treatment to reduce cross talk between instruments or microphones.
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Binaural Recording: Binaural recording uses a dummy head or specialized microphone setup to simulate human ear spacing and create a highly realistic stereo effect with minimal cross talk.
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Headphone Listening: In the context of consumer listening, high-quality headphones can provide an excellent stereo experience with complete separation between the left and right channels.