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Convention Paper

Subjective Assessment of the Versatility of Three-Dimensional Near-Field Microphone Arrays for Vertical and Three-Dimensional Imaging

Authors: Martin, Bryan; Kelly, Jack; Leonard, Brett

AES Convention 147 · Paper 10274 · October 2019

Abstract

This investigation examines the operational size-range of audio images recorded with advanced close-capture microphone arrays for three-dimensional imaging. It employs a 3D panning tool to manipulate audio images. The 3D microphone arrays used in this study were: Coincident-XYZ, M/S-XYZ, and Non-coincident-XYZ/five-point. Instruments of the orchestral string, woodwind, and brass sections were recorded. The objective of the test was to determine the point of three-dimensional expansion onset, preferred imaging, and image breakdown point. Subjects were presented with a continuous dial to manipulate the three-dimensional spread of the arrays, allowing them to expand or contract the microphone signals from 0° to 90° azimuth/elevation. The results showed that the M/S-XYZ array is the perceptually “biggest” of the capture systems under test and displayed the fasted sense of expansion onset. The coincident and non-coincident arrays are much less agreed upon by subjects in terms of preference in particular, and also in expansion onset.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
10274
Publication date
October 6, 2019
Session subject
Spatial Audio, Part 1
Affiliation
McGill University, Montreal, QC, Canada; Centre for Interdisciplinary Research in Music Media and Technology (CIRMMT), Montreal, QC, Canada; University of Indianapolis, Indianapolis, IN, USA; The Chelsea Music Festival, New York, NY, USA (See document for exact affiliation information.)
Type
Convention Paper