Abstrakti
The laser-induced air breakdown is produced by focusing a high energy pulsed laser beam which heats rapidly the air at the focusing point. This produces a tiny explosion which generates a sonic impulse. The sonic pulse is repeatable, omnidirectional and broadband. Furthermore, the laser-induced air breakdown can be projected inside an enclosed space through a window of transparent material thus providing a massless source. The laser-induced air breakdown concentrates most of its sonic energy between 1 kHz and 100 kHz which suggests that it can be used for scale model measurements. The impulse response of an enclosed space made of glass, that represents a rectangular room, was measured using laser-induced air breakdown and compared to a computer simulation. The measured impulse response matched the simulated response of the scale room which confirms that laser-induced breakdown can be used as point source in scale model acoustic work.
Alkuperäiskieli | Englanti |
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Otsikko | Forum Acusticum, FA 2014 |
Kustantaja | European Acoustics Association |
Sivumäärä | 4 |
Vuosikerta | 2014-January |
ISBN (elektroninen) | 9788361402282 |
Tila | Julkaistu - 2014 |
OKM-julkaisutyyppi | A4 Artikkeli konferenssijulkaisuussa |
Tapahtuma | Forum Acusticum - Kraków, Puola Kesto: 7 syysk. 2014 → 12 syysk. 2014 Konferenssinumero: 7 |
Conference
Conference | Forum Acusticum |
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Lyhennettä | FA |
Maa/Alue | Puola |
Kaupunki | Kraków |
Ajanjakso | 07/09/2014 → 12/09/2014 |