Title :

Source localisation in a reverberant plate using average coda properties and early signal strength

Author(s) :

Achdjian, Hossep [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Moulin, Emmanuel [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Benmeddour, Farouk [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Assaad, Jamal [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Chehami, Lynda [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Acta Acustica united with Acustica

Pages :

834-841

Publisher :

Hirzel Verlag

Publication date :

2014

ISSN :

1610-1928

English abstract : [en]

A statistical reverberation model based on the average distribution of wave packets propagating in a finite plate is described and it is shown that by fitting experimental data to theoretical expressions, either structural ...
Show more >A statistical reverberation model based on the average distribution of wave packets propagating in a finite plate is described and it is shown that by fitting experimental data to theoretical expressions, either structural or source-related features can be extracted with very few sensors. An original method to localise an impulse acoustic source in a reverberant plate is proposed and discussed as a possible application of this principle. The reverberated wave packets (coda), which are ordinarily discarded in classical localisation techniques, are used here to estimate an energy-related term characteristic of the source. Thereafter, the energies of the early wave packets measured on three sensors are enough to estimate the source location (whereas a minimum of four sensors is required in classical localisation techniques). After detailing the conditions of application of the method, several examples of experimental source localisation are given.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL