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As a spatial-sound processing technique, directional audio coding can determine the direction of arrival of a sound wave. When based on a square array of four omnidirectional microphones, reliable estimation of direction is limited to a restricted frequency range. However, when a rigid cylinder is inserted into the array, the resulting acoustic shadows and scattering allow intermicrophone differences to be used in the quantization. Both methods estimate the direction reliably over the entire audible frequency range. Subjective listening tests corroborate the objective computations.
Author (s): Ahonen, Jukka; Del Galdo, Giovanni; Kuech, Fabian; Pulkki, Ville
Affiliation:
Department of Signal Processing and Acoustics, Aalto University, Espoo, Finland; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany
(See document for exact affiliation information.)
Publication Date:
2012-05-06
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Permalink: https://aes2.org/publications/elibrary-page/?id=16322
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Ahonen, Jukka; Del Galdo, Giovanni; Kuech, Fabian; Pulkki, Ville; 2012; Directional Analysis with Microphone Array Mounted on Rigid Cylinder for Directional Audio Coding [PDF]; Department of Signal Processing and Acoustics, Aalto University, Espoo, Finland; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=16322
Ahonen, Jukka; Del Galdo, Giovanni; Kuech, Fabian; Pulkki, Ville; Directional Analysis with Microphone Array Mounted on Rigid Cylinder for Directional Audio Coding [PDF]; Department of Signal Processing and Acoustics, Aalto University, Espoo, Finland; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; Paper ; 2012 Available: https://aes2.org/publications/elibrary-page/?id=16322
@article{ahonen2012directional,
author={ahonen jukka and del galdo giovanni and kuech fabian and pulkki ville},
journal={journal of the audio engineering society},
title={directional analysis with microphone array mounted on rigid cylinder for directional audio coding},
year={2012},
volume={60},
issue={5},
pages={311-324},
month={june},}
TY – paper
TI – Directional Analysis with Microphone Array Mounted on Rigid Cylinder for Directional Audio Coding
SP – 311 EP – 324
AU – Ahonen, Jukka
AU – Del Galdo, Giovanni
AU – Kuech, Fabian
AU – Pulkki, Ville
PY – 2012
JO – Journal of the Audio Engineering Society
VO – 60
IS – 5
Y1 – June 2012