“3D Audio” has become a popular topic in recent years. A great deal of research is underway in spatial sound reproduction through computer modeling and signal processing, while less focus is being placed on actual recording practice. This study is a preliminary test in establishing effective levels of height-channel information based on the results of a listening test. In this case, an acoustic guitar was used as the source. Eight discrete channels of height information were combined with an eight-channel surround sound mix reproduced at the listener’s ear height. Data from the resulting listening test suggests that while substantial levels of height channel information increase the effect of immersion, more subtle levels fail to provide increased immersion over the conventional multichannel mix.
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