Explore the Low-frequency Axisymmetric Waves for Locating Underground Pipelines
Buried pipelines are central to modern life and form an important part of many engineering for transporting fluids and gases. Pipe location is a subject of increasing concern in China and across the world.
Read More >>Sequential Research of the Improved Multiband-structured Subband Adaptive Filter Algorithm Gains Ground
Adaptive filters are widely used in communication, active noise control (ANC), and acoustic echo cancellation (AEC). And subband adaptive filters (SAF) are commonly employed to improve the convergence behavior. However, the convergence rate o...
Read More >>How to Design a Low Frequency Perforated Panel Sound Absorber
Several researchers from IOA have done a theoretical and experimental discussion on how to design a low frequency perforated panel sound absorber with short extended tubes in a limited thickness. The extended tubes greatly shift the sound abs...
Read More >>A New Method to Image Microseismic Source Location
Recently, researchers from the Institute of Acoustics (IOA), Chinese Academy of Sciences expanded seismic interferometric imaging method to elastic wave interferometric imaging, and proposed weighted-elastic-wave (WEW) interferometric imaging...
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Aerial Acoustic Communication Is Available for Hundreds of Meters
Researchers from the Institute of Acoustics of the Chinese Academy of Sciences have proposed an acoustic data transmission system, sound wave information of which can be transmitted over a considerably long distance expanded to hundreds of me...
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