The Significance of Phase Data for the Acoustic Prediction of Combinations of Sound Sources

Ahnert W, Feistel S. The Significance of Phase Data for the Acoustic Prediction of Combinations of Sound Sources. In: AES Convention 119. Audio Engineering Society; 2005. Paper 6632. Available from: https://aes.org/publications/elibrary-page/?id=13368

@inproceedings{Ahnert2005_13368,
  author = {Ahnert, Wolfgang and Feistel, Stefan},
  title = {{The Significance of Phase Data for the Acoustic Prediction of Combinations of Sound Sources}},
  booktitle = {AES Convention 119},
  note = {Paper 6632},
  year = {2005},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13368}
}

TY  - CPAPER
TI  - The Significance of Phase Data for the Acoustic Prediction of Combinations of Sound Sources
AU  - Ahnert, Wolfgang
AU  - Feistel, Stefan
T2  - AES Convention 119
M1  - Paper 6632
PY  - 2005
DA  - 2005/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13368
PB  - Audio Engineering Society
LA  - en
AB  - Until today, only few acoustic prediction software packages utilize complex directivity data to characterize sound sources, such as line arrays. This work gives some theoretical background on the significance of phase data for the prediction of combinations of coherent sound sources. A mathematical model is introduced that allows evaluating the error ranges for several loudspeaker measurement methods. It is shown that, in contrast to what one would naively expect, the choice of the reference point for measuring complex data is rather irrelevant within given limits. These limits are derived based on the propagation equation for spherical waves. It is further shown analytically that the use of phase data reduces the measurement error to be expected by at least an order of magnitude.
ER  -