Акустико-эмиссионный метод неразрушающего контроля является одним из эффективных и экономичных способов обследования сосудов высокого давления для поиска в них скрытых дефектов (трещин, расслоений др.), а также единственным методом, чувствительным к развивающимся дефектам. Скорость распространения звука объекте ее адекватное определение локационной схеме имеют важнейшее значение точности локаци...

1. Cao J, Liu Wang Lai X. Acoustic vector sensor: Reviews and future perspectives., IET Signal Processing. 2017;11(1):1-9. https://doi.org/10.1049/iet-sp.... CrossRef Google Scholar

This paper presents the implementation of Linear Frequency Modulation (LFM) pulse compression technique over acoustic waveguides at frequency range (2kHz--3kHz). The medium used for acoustic chirp propagation is air. Real time pulse compression was carried out over DSP kit (TMS320C6713). The obtained range from the compressed pulse accedes to the actual range of the target (sound source). The s...

The purpose of this project is to demonstrate some fundamental issues in detection and estimation. The project consists of theoretical tasks as well as computer simulations and laboratory-scale experiments. As an illustrative example, an acoustic radar system is used. The ambition is to make this work without using any special hardware, but merely a standard sound card that comes with any moder...

Motivated by measurements made in the 2004 Long-Range Ocean Acoustic Propagation Experiment (LOAPEX), the problem of mode processing transient acoustic signals collected on two nearby vertical line arrays is considered. The first three moments (centroid, variance, and skewness) of broadband distributions of acoustic energy with fixed mode number (referred to as modal group arrivals) are estimat...

Physical modeling is a modern approach to musical acoustics and high-quality sound synthesis of musical instruments. In this paper, a time-domain method is used to measure acoustical properties of wind instruments. The instrument bore is modeled by an acoustical tube and a DSP-based measurement system is used to characterize transmission and reflection functions in the duct. Inverse filtering t...

The aim of this article is to outline possibilities of sound and its physical properties during shooting of moving objects. Attention was devoted to the specific location of a fixed point in the space and time. We present two proposed methods that are based on neural networks. We also proposed appropriate topologies of the systems that depend on the required accuracy, acoustic properties and se...