Near-Field Evaluation of Reproducible Speech Sources

Gonzalez R, Mckenzie T, Politis A, Lokki T. Near-Field Evaluation of Reproducible Speech Sources. J Audio Eng Soc. 2022;70(7/8):621-633. doi:10.17743/jaes.2022.0022

@article{Gonzalez2022_21828,
  author = {Gonzalez, Raimundo and Mckenzie, Thomas and Politis, Archontis and Lokki, Tapio},
  title = {{Near-Field Evaluation of Reproducible Speech Sources}},
  journal = {Journal of the Audio Engineering Society},
  volume = {70},
  number = {7/8},
  pages = {621--633},
  year = {2022},
  month = jul,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2022.0022},
  url = {https://doi.org/10.17743/jaes.2022.0022}
}

TY  - JOUR
TI  - Near-Field Evaluation of Reproducible Speech Sources
AU  - Gonzalez, Raimundo
AU  - Mckenzie, Thomas
AU  - Politis, Archontis
AU  - Lokki, Tapio
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 70
IS  - 7/8
SP  - 621
EP  - 633
PY  - 2022
DA  - 2022/07/06
DO  - 10.17743/jaes.2022.0022
UR  - https://doi.org/10.17743/jaes.2022.0022
PB  - Audio Engineering Society
LA  - en
AB  - The spatial speech reproduction capabilities of a KEMAR mouth simulator, a loudspeaker, the piston on the sphere model, and a circular harmonic fitting are evaluated in the near-field. The speech directivity of 24 human subjects, both male and female, is measured using a semicircular microphone array with a radius of 36.5 cm in the horizontal plane. Impulse responses are captured for the two devices, and filters are generated for the two numerical models to emulate their directional effect on speech reproduction. The four repeatable speech sources are evaluated through comparison to the recorded human speech both objectively, through directivity pattern and spectral magnitude differences, and subjectively, through a listening test on perceived coloration. Results show that the repeatable sources perform relatively well under the metric of directivity, but irregularities in their directivity patterns introduce audible coloration for off-axis directions.
ER  -