Implementation of a Non-Linear Room Impulse Response Estimation Algorithm

Collins T. Implementation of a Non-Linear Room Impulse Response Estimation Algorithm. In: AES Convention 116. Audio Engineering Society; 2004. Paper 6170. Available from: https://aes.org/publications/elibrary-page/?id=12707

@inproceedings{Collins2004_12707,
  author = {Collins, Tim},
  title = {{Implementation of a Non-Linear Room Impulse Response Estimation Algorithm}},
  booktitle = {AES Convention 116},
  note = {Paper 6170},
  year = {2004},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12707}
}

TY  - CPAPER
TI  - Implementation of a Non-Linear Room Impulse Response Estimation Algorithm
AU  - Collins, Tim
T2  - AES Convention 116
M1  - Paper 6170
PY  - 2004
DA  - 2004/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12707
PB  - Audio Engineering Society
LA  - en
AB  - Most techniques for estimating the transfer function (or impulse response) of an acoustical space with a high signal-to-noise ratio operate along similar principles. A known, broadband signal is transmitted at one point in the room whilst being simultaneously recorded at another. A matched-filter is then used to compress the transmission waveform into an approximate impulse and equalisation filtering is used to remove any colouration caused by the non-uniform energy-spectrum of the transmission and/or the non-ideal response of the loudspeaker/microphone combination. In this paper, the limitations of this conventional technique will be highlighted, especially when using low-cost equipment. An alternative, non-linear deconvolution technique is proposed which will be shown to give superior performance using both synthetic waveforms and practical room measurements.
ER  -