As the internet search evolves toward multimedia content based search and information retrieval, audio content identification and retrieval will likely become one of the key components of next generation internet search machines. In this paper we consider the specific problem of identifying the classical music composition of an unknown performance of the composition. We develop and evaluate a w...

Acoustic holograms have promising applications in sound-field reconstruction, particle manipulation, ultrasonic haptics, and therapy. This study reports on the theoretical, numerical, experimental investigation of multiplexed acoustic at both audio frequencies via a rationally designed transmission-type metamaterial. The proposed metahologram is composed two Fabry–Pérot resonant channels per un...

Visual observations of the marine biodiversity can be difficult in specific areas for different reasons, including weather conditions or a lack observers. In such conditions, passive acoustics represents potential alternative approach. The objective this work is to demonstrate how information about obtained via detailed analysis underwater acoustic environment. This paper presents first Saint-P...

Some high-resolution direction-of-arrival DOA estimation methods, such as the MUSIC method, have been developed based on vectorsensor array. However, these high-resolution methods suffer from serious drawbacks. Indeed, they are not able to estimate coherent signals and sensitive to calibration errors. Mainly to overcome these limitations and in particular to satisfy practical engineering applic...

In this article we will study sound—specifically, how sound allows us to communicate in a classroom and can improve that communication. You learn is measured people called acoustics engineers help architects designers make sure classrooms are not too noisy—or quiet. We even have some experiments you do measure sounds at home, school, or football stadium.

We propose the design of a flat active wall panel and demonstrate its effectiveness in modulating impedance, which can lead to total absorption incident sound waves low-frequency range 50--120 Hz, or alter reflection phase. Such an acoustic frequency is usually most difficult handle for passive components, owing long wavelength, consequently, bulky size materials required. The actuated by piezo...