Compared with the study on acoustic quality of western music and opera, few studies were carried out on how the contemporary people evaluate acoustic attributes of Chinese traditional opera. In this study the subjective preference values of acoustic parameters for Peking opera such as sound pressure level, reverberation time and frequency response curve of RT were revealed through laboratory ex...

A planar surface acoustic wave on a solid substrate and its radiated sound into a static liquid drop produce time-averaged, exponentially decaying acoustic and electric Maxwell pressures near the contact line. These localized contact-line pressures are shown to generate two sequences of hemispherical satellite droplets at the tens of microns and submicron scales, both obeying self-similar expon...

In this article, we demonstrate a novel microfluidic flow chamber driven by surface acoustic waves. Our device is a closed loop channel with an integrated acoustic micropump without external fluidic connections that allows for the investigation of small fluid samples in a continuous flow. The fabrication of the channels is particularly simple and uses standard milling and PDMS molding. The micr...

This paper aims to describe the complete characterization of aero-acoustic sources, with specific attention to turbulent jet flows with a new approach. The traditional way to tackle fluid dynamic phenomena is to measure the velocity field by means of Laser Doppler Anemometer, Particle Image Velocimetry with the main drawback due to the need of seeding the flow. To overcome that problem the 3D s...

In this paper, the acoustic excitation effects on the flow characteristics of a laminar jet inside an air-filled cylindrical tube have been presented and discussed. It is observed that the acoustic excitation has a strong effect on the jet velocity and its flow structure. Under excitation, the velocity is observed to increase more than seven times. Comparisons and investigations of the velocity...

We report calculations of first-order pressure and second-order pressure gradient fields in the neighborhood of patterned silicon wafers. The patterned wafers consist of a single ridge and two parallel ridges separated by a trench on a planar substrate. The efficacy of megasonic waves for cleaning patterned wafers contaminated with micron to submicron silica particles is discussed by comparing ...