An omnidirectional source is required in many acoustic measurements. Commonly a
dodecahedron speaker is used but due to various factors (eg, high cost, transportation …

In preparation for the SuperCam/Mars Microphone scientific investigation, the acoustic
signal associated with the plasma formation during Laser-Induced Breakdown Spectroscopy …

Although indoor acoustic characteristics should ideally be assessed by measuring the
reverberation time using a point sound source, a regular polyhedron loudspeaker, which …

A health-monitoring system is proposed to detect holes drilled in a pipe based on laser
plasma acoustic excitations and acoustic measurements. In this system, an acoustic …

A Mach-Zehnder interferometer is used to measure spherically diverging N-waves in
homogeneous air. An electrical spark source is used to generate high-amplitude (1800 Pa at …

A method to generate a pulse sound source for acoustic tests based on nanosecond laser
ablation with a plasma plume is discussed. Irradiating a solid surface with a laser beam …

Omnidirectional sound sources are needed to perform a large variety of tests in acoustics.
Typically, they consist of conventional speaker drivers arranged in a dodecahedron …

Phononic crystals and acoustic metamaterials are expected to become an important
enabling technology for science and industry. Currently, various experimental methods are …

Despite possessing an increased perceptual significance, near-field head-related transfer
functions (nf-HRTFs) are more difficult to acquire compared to far-field head-related transfer …

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 …