用于在可听带宽内进行精确脉冲响应测量的激光诱导声学点源。

Laser-induced acoustic point source for accurate impulse response measurements within the audible bandwidth.

作者信息

Gómez Bolaños Javier, Delikaris-Manias Symeon, Pulkki Ville, Eskelinen Joona, Hæggström Edward

机构信息

Department of Signal Processing and Acoustics, Aalto University, P.O. Box 13000, FI-00076 Aalto Espoo, Finland

Department of Physics, Helsinki University, P.O. Box 64, FI-00014, Helsinki, Finland

出版信息

J Acoust Soc Am. 2014 Jun;135(6):EL298-303. doi: 10.1121/1.4879664.

DOI:10.1121/1.4879664

PMID:24907837

Abstract

Laser induced air breakdown is proposed as a sound source for accurate impulse response measurements. Within the audible bandwidth, the source is repeatable, broadband, and omnidirectional. The applicability of the source was evaluated by measuring the impulse response of a room. The proposed source provides a more accurate temporal and spatial representation of room reflections than conventional loudspeakers due to its omnidirectionality, negligible size and short pulse duration.

摘要

激光诱导空气击穿被提议作为一种用于精确脉冲响应测量的声源。在可听带宽内，该声源具有可重复性、宽带性和全向性。通过测量房间的脉冲响应来评估该声源的适用性。由于其全向性、可忽略的尺寸和短脉冲持续时间，所提议的声源比传统扬声器能提供更准确的房间反射的时间和空间表示。