When combining close microphone(s) with ambience microphone(s), the direct signal will be picked up slightly delayed by the ambience microphone(s) compared to the close microphone(s). This study examines the auditory significance of the delayed direct signal in the context of early reflections and reverberation emitted from the boundaries within an acoustic environment. The aim is to establish to which extent any auditory perception influenced by the delayed direct signal may impact the application of the ambience microphone setup itself. The findings in this study suggests that when combined with close microphones, the ambience setup when using omni microphones, should be placed at a distance beyond at least twice the critical distance of the acoustical recording environment relative to the sound source.
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https://aes2.org/publications/elibrary-page/?id=21948
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