Effect of vertical microphone layer spacing for a 3D microphone array

Hyunkook Lee, Christopher Gribben

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Subjective listening tests were conducted to investigate how the spacing between main (lower) and height (upper) microphone layers in a 3D main microphone array affects perceived spatial impression and overall preference. Four different layer spacings of 0m, 0.5m, 1m, and 1.5m were compared for the sound sources of trumpet, acoustic guitar, percussion quartet, and string quartet using a nine-channel loudspeaker setup. It was generally found that there was no significant difference between any of the spaced layer configurations, whereas the 0m layer had slightly higher ratings than the more spaced layers in both spatial impression and preference. Acoustical properties of the original microphone channel signals as well as those of the reproduced signals, which were binaurally recorded, were analyzed in order to find possible physical causes for the perceived results. It is suggested that the perceived results were mainly associated with vertical interchannel crosstalk in the signals of each height layer and the magnitude and pattern of spectral change at the listener's ear caused by each layer.

LanguageEnglish
Pages870-884
Number of pages15
JournalAES: Journal of the Audio Engineering Society
Volume62
Issue number12
Publication statusPublished - 1 Dec 2014

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Microphones
Loudspeakers
Crosstalk
Acoustics
Acoustic waves
Spacing
Layer

Cite this

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Effect of vertical microphone layer spacing for a 3D microphone array. / Lee, Hyunkook; Gribben, Christopher.

In: AES: Journal of the Audio Engineering Society, Vol. 62, No. 12, 01.12.2014, p. 870-884.

Research output: Contribution to journalArticle

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