Optimization of Temporally Diffuse Impulses for Decorrelation of Multiple Discrete Loudspeakers

Moore JB, Hill A. Optimization of Temporally Diffuse Impulses for Decorrelation of Multiple Discrete Loudspeakers. In: AES Convention 142. Audio Engineering Society; 2017. Paper 9794. Available from: https://aes.org/publications/elibrary-page/?id=18668

@inproceedings{Moore2017_18668,
  author = {Moore, Jonathan B. and Hill, Adam},
  title = {{Optimization of Temporally Diffuse Impulses for Decorrelation of Multiple Discrete Loudspeakers}},
  booktitle = {AES Convention 142},
  note = {Paper 9794},
  year = {2017},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18668}
}

TY  - CPAPER
TI  - Optimization of Temporally Diffuse Impulses for Decorrelation of Multiple Discrete Loudspeakers
AU  - Moore, Jonathan B.
AU  - Hill, Adam
T2  - AES Convention 142
M1  - Paper 9794
PY  - 2017
DA  - 2017/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18668
PB  - Audio Engineering Society
LA  - en
AB  - Temporally diffuse impulses (TDIs) were originally developed for large arrays of distributed mode loudspeakers to achieve even radiation patterns. This initial investigation evaluates the performance of TDIs in terms of the reduction of low frequency spatial variance across an audience area when used with conventional loudspeakers. A novel variable decay windowing method is presented, allowing users control of TDI performance and perceptibility. System performance is modelled using an anechoic and an image source acoustic model. Results in the anechoic model show a mean spatial variance reduction of 42%, with a range of source material and using the optimal TDI generation methodology. Results in the image source model are more variable, suggesting that coherence of source reflections reduces static TDI effectiveness.
ER  -