High-Resolution Analysis of the Directivity Factor and Directivity Index Functions of Human Speech

Bellows S, Leishman T. High-Resolution Analysis of the Directivity Factor and Directivity Index Functions of Human Speech. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10173. Available from: https://aes.org/publications/elibrary-page/?id=20306

@inproceedings{Bellows2019_20306,
  author = {Bellows, Samuel and Leishman, Timothy},
  title = {{High-Resolution Analysis of the Directivity Factor and Directivity Index Functions of Human Speech}},
  booktitle = {AES Convention 146},
  note = {Paper 10173},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20306}
}

TY  - CPAPER
TI  - High-Resolution Analysis of the Directivity Factor and Directivity Index Functions of Human Speech
AU  - Bellows, Samuel
AU  - Leishman, Timothy
T2  - AES Convention 146
M1  - Paper 10173
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20306
PB  - Audio Engineering Society
LA  - en
AB  - The detailed directivity of a sound source is a powerful tool with broad applications in modeling of sound radiation into various acoustic environments, ideal microphone positioning, and other areas. While the directivity of human speech has been assessed previously, the results have lacked the necessary resolution to accurately model radiation in three dimensions. In this work high-resolution measurements were taken using a multiple-capture spherical-scanning system. The frequency-dependent directivity factors and indices of speech were then calculated from the data and their spherical-harmonic expansions. Although past models have represented these measures in simple terms, high-resolution measurements demonstrate that over the audible range they have more variation than previously known, with important ramifications for three-dimensional modeling and audio.
ER  -