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Journal Article Open Access

A Multi-Angle, Multi-Distance Dataset of Microphone Impulse Responses

Authors: Franco Hernández, Juan Carlos; Bacila, Bogdan; Brookes, Tim; De Sena, Enzo

Journal of the Audio Engineering Society · Volume 70 · Issue 10 · pp. 882–893 · October 2022

Abstract

A new publicly available dataset of microphone impulse responses (IRs) has been generated. The dataset covers 25 microphones, including a Class-1 measurement microphone and polar pattern variations for seven of the microphones. Microphones that were included had omnidirectional, cardioid, supercardioid, and bidirectional polar patterns; condenser, movingcoil, and ribbon transduction types; single and dual diaphragms; multiple body and head basket shapes; small and large diaphragms; and end-address and side-address designs.Using a customdeveloped computer-controlled precision turntable, IRs were captured quasi-anechoically at incident angles from 0? to 355? in steps of 5? and at source-to-microphone distances of 0.5, 1.25, and 5 m. The resulting dataset is suitable for perceptual and objective studies related to the incident-angle--dependent response of microphones and for the development of tools for predicting and emulating on-axis and off-axis microphone characteristics. The captured IRs allow generation of frequency response plots with a degree of detail not commonly available in manufacturer-supplied data sheets and are also particularly well-suited to harmonic distortion analysis.

Details

Publication
Journal of the Audio Engineering Society
Volume
70
Issue
10
Pages
882–893
Publication date
October 6, 2022
Affiliation
Institute of Sound Recording, University of Surrey, Guildford, United Kingdom; Applied Psychoacoustics Laboratory, University of Huddersfield, Huddersfield, United Kingdom (See document for exact affiliation information.)
Type
Journal Article