Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the Fifth International Congress on Sound and Vibration |
| Place of Publication | Auburn, AL |
| Publisher | The International Institute of Acoustics and Vibration |
| Publication date | 1997 |
| Pages | 287-294 |
| Publication status | Published - 1997 |
| Event | 5th International Congress on Sound and Vibration - Adelaide, Australia Duration: 15 Dec 1997 → 18 Dec 1997 Conference number: 5 |
Conference
| Conference | 5th International Congress on Sound and Vibration |
|---|---|
| Number | 5 |
| Country | Australia |
| City | Adelaide |
| Period | 15/12/1997 → 18/12/1997 |
Cite this
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Active equalisation of the sound field in an extended region of a room. / Orozco-Santillán, Arturo.
Proceedings of the Fifth International Congress on Sound and Vibration. Auburn, AL : The International Institute of Acoustics and Vibration, 1997. p. 287-294.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
TY - GEN
T1 - Active equalisation of the sound field in an extended region of a room
AU - Orozco-Santillán, Arturo
PY - 1997
Y1 - 1997
N2 - A theoretical study of spatial sound equalisation in an extended region in a room has been carried out. The purpose is to reproduce sound without significant spatial fluctuations and to minimise the spectral colouration at low frequencies in a specified region of the room. The problem is first studied by means of an idealised frequency domain model. The analysis is based on the calculation of the complex source strengths that minimise the difference between the actual sound pressure and the desired sound pressure in the listening area. Results in relation to the position of the sources, the frequency range, and the size and location of the listening area are presented. However, the frequency-domain approach results in non-causal impulse responses that can be realised only at the expense of a delay. Therefore, this analysis is supplemented with a study of the equalisation carried out in the time domain. Here, a solution constrained to causality is determined. The duration of the impulse response should be minimised as well in order to avoid echos, which are undesirable in the reproduction of transient signals. This causality-constrained equalisation is compared with the optimal solution obtained in the frequency domain.
AB - A theoretical study of spatial sound equalisation in an extended region in a room has been carried out. The purpose is to reproduce sound without significant spatial fluctuations and to minimise the spectral colouration at low frequencies in a specified region of the room. The problem is first studied by means of an idealised frequency domain model. The analysis is based on the calculation of the complex source strengths that minimise the difference between the actual sound pressure and the desired sound pressure in the listening area. Results in relation to the position of the sources, the frequency range, and the size and location of the listening area are presented. However, the frequency-domain approach results in non-causal impulse responses that can be realised only at the expense of a delay. Therefore, this analysis is supplemented with a study of the equalisation carried out in the time domain. Here, a solution constrained to causality is determined. The duration of the impulse response should be minimised as well in order to avoid echos, which are undesirable in the reproduction of transient signals. This causality-constrained equalisation is compared with the optimal solution obtained in the frequency domain.
M3 - Article in proceedings
SP - 287
EP - 294
BT - Proceedings of the Fifth International Congress on Sound and Vibration
PB - The International Institute of Acoustics and Vibration
CY - Auburn, AL
ER -