In this study, resonant frequencies of flexurally vibrating samples were measured using the sonic method (SRM) and impulse excitation technique (IET) to assess equivalency these two methods. Samples made from different materials with shapes (prism rectangular cross-section cylinder circular cross-section). The mean values standard deviations compared t-test F-test. tests showed an both methods ...

In this paper we try to establish the system order for the correct representation of a set of room transfer functions (RTF), in order to partition memory between the common recursive part and the non-recursive part specialized for each RTF. To this end, we apply a few system theory concepts on a set of simulated rectangular rooms, whose impulse responses were generated using the image method [1...

We carried out a comparative analysis of the algorithms for detecting a rectangular impulse against Gaussian white noise under either authorized or unauthorized access to the transmitted data. We presupposed that for data transmission the binary communication system is used and that the useful information in the data is whether the signal is present or absent. The case is that unauthorized acce...

Large umbrella space antennas are essential for communication, monitoring and observation of Earth and space objects. Despite investigations devoted to space antenna dynamics, the disturbance impulse shape effect on the root mean square error of spacecraft antenna reflecting surface has not been studied. This paper overcomes this gap describing disturbance impulse impact on root mean square err...

Previous solutions for spatial impulse responses of rectangular planar transducers require either approximations or complex geometrical considerations. This paper describes a new, simplified and exact solution using only trigonometric functions and simple set operations. This solution, which can be numerically implemented with a straightforward algorithm, is an exact implementation of the Rayle...

Strong modal behavior can produce undesirable acoustical effects, particularly in recording studios and other small rooms. Although closed-form solutions exist to predict modes in rectangular rooms with parallel walls, such solutions are typically not available for rooms with even modest geometrical complexity. This work explores a method to identify multiple decaying modes in experimentally me...

In this paper, a new optimization on windowing technique based finite impulse response (FIR) filters is proposed for revealing and evaluating the Influence of position in cascaded filter tested ECG signal de-noising. baseline wander (BLW), power line interference (PLI) electromyography (EMG) noises are getting removed. The performance adopted method evaluated PTB diagnostic database. Subsequent...

impulse buying is a significant aspect of consumer behavior and a critical concept in the marketplace. dramatic increases in consumption and possibility of credit buying all over the world has provided appropriate situations for impulse buying, however there is little information about impulse buying in eastern and in transition societies and economies. the purpose of this study is to develop a...

Impulse propagation across sudden expansions of excitable tissue has been shown to exhibit various forms of conduction disturbance on a macroscopic scale, ranging from small delays to unidirectional or complete conduction block. With the present study, we attempted to characterize systematically the dependence of impulse propagation on the geometry of the underlying excitable tissue on a micros...