| Issue |
Acta Acust.
Volume 8, 2024
|
|
|---|---|---|
| Article Number | 14 | |
| Number of page(s) | 12 | |
| Section | Speech | |
| DOI | https://doi.org/10.1051/aacus/2024006 | |
| Published online | 15 March 2024 | |
Scientific Article
Combining multiple sparse measurements with reference data regularization to create spherical directivities applied to voice data
Sorbonne Université, CNRS, Institute Jean le Rond d’Alembert, UMR 7190, 4 Place Jussieu, 75005 Paris, France
* Corresponding author: samuel.bellows11@gmail.com
Received:
20
December
2023
Accepted:
12
February
2024
Obtaining high-resolution, spherical phoneme-dependent directivities for voice radiation is beneficial for numerous acoustics applications. This work reports on a spherical interpolation method based on two interleaved measurements using a regularized least-squares fit with reference data. Maximizing the spherical correlation between previously reported results and measured data determines the regularization hyper-parameters to ensure physical solutions. While the resultant spherical directivity patterns show similarities to time-averaged results, distinct radiation characteristics appear, particularly in the range of 630 Hz to 2 kHz.
Key words: Voice directivity / Sound radiation / Speech acoustics / Spherical harmonic / Inverse problems
© The Author(s), Published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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