Capturing audio in three dimensions is becoming a required skill for many recording engineers. Playback formats and systems now exist that take advantage of height channels, which introduce the aspect of elevation into the experience. In this engineering brief several exploratory techniques in height channel capture are reviewed and compared. Techniques optimized for conventional 5.1 surround sound are employed, and additional microphones are added to increase the immersive experience. Methods that have proven to be successful in 5.1 recordings are modified for 3D audio capture and the results are discussed. This case study will show an overview of the groundwork currently underway.
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