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| Paper: | SP-P10.1 |
| Session: | Topics in Speech Enhancement |
| Time: | Wednesday, May 19, 15:30 - 17:30 |
| Presentation: |
Poster |
| Topic: |
Speech Processing: Speech Enhancement |
| Title: |
SPHERICAL HARMONIC ANALYSIS OF EQUALIZATION IN A REVERBERANT ROOM |
| Authors: |
Terence Betlehem; Australian National University | | |
| | Thushara Abhayapala; Australian National University | | |
| Abstract: |
In this paper, we investigate the performance of acoustic equalization in reverberant environments. We first highlight an efficient general representation of a sound field using spherical harmonics. We then use this representation to develop a concise closed-form expression for robustness of equalization to sensor movement. This expression is used (i) to characterize equalization performance for a general class of non-isotropic sound fields and (ii) to quantify the improvementsto equalizer robustness that can be obtained by using a directional microphone. The approach used here does not use any of the assumptions of statistical acoustics, but instead exploits the inherent properties of a sound field as described by the wave equation. |
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