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Some important properties of indefinite matrices describing symmetrical lumped resistive networks are presented. A new property for the product of the indefinite matrices Yi and Zi corresponding to total symmetrical networks is discussed. These results are useful for modeling by electrical equivalence many problems in signal processing, computer networking, parallel computing, computer vision, and...
The increasing sophistication of computer programs and communication systems requires the development of more efficient and interactive human-computer interfaces. One solution to this problem could be the brain-machine interfaces. The aim of this paper is to explore the possibilities of using context dependent interpretations of EEG signals, in addition to signal processing techniques.
The increasing number of signal processing tools for highly parallel neurophysiological recordings opens up new avenues for connecting technologies directly to neuronal processes. As the understanding is taking a better shape, lot more work to perform is coming up. A simple brain-machine interface may be able to reestablish the broken loop of the persons with motor dysfunction. With time the brain-machine...
The paper presents the approach to the design of the virtual instruments performing parallel computations for signal processing. Based on the example of the virtual instrument performing both frequency and time measurements, the method of creating the measurement software working under the real-time operating system is explained. Comparison between the designed instrument and its non-parallel counterpart...
Described several methods to achieve of remote data acquisition based on Lab VIEW, introduced the design method in the Lab VIEW platform, combined with data acquisition cards and TCP/IP protocol for data acquisition and transmission of the long-range, and realization of the signal on the time-domain analysis and on the frequency-domain Analysis. Time-domain analysis, including: real-time waveform...
The paper is devoted to problem of spline approximation. A new method of nodes location for curves and surfaces computer construction by means of B-splines and results of simulink-modeling is presented. The advantages of this paper is that we comprise the basic spline with classical polynomials both on accuracy, as well as degree of paralleling calculations are also shown.
In our approach, we propose to process the mean arterial pressure recordings like a signal but yet do analysis like an image in order to differentiate recordings from patients using pressors to treat their acute hypotension and from patients with no such conditions. Mean arterial pressure values recorded over time is numerical representations over time and hence signal processing techniques can be...
The evolution and pervasiveness of PCs as cost-effective computing platforms and with more powerful software tools, has resulted in a virtual explosion in data acquisition, signal processing and control systems from laboratory to industry including field applications. PC based instrumentation has given new dimensions to the field of measurement and control. Concept of virtual instrumentation (VI)...
This paper describes an optimization strategy for steady state visual evoked potential (SSVEP)-based brain-computer interface (BCI), especially in a spelling program application. In this application, there are at least three components for implementing a complete BCI application: stimulator, signal processing, and application (spelling program). Ideally, those three components should run on different...
This paper describes the coverage of real-time DSP topics as part of a one credit laboratory course for freshman majoring in electrical and computer engineering (ECE). The course is motivational in nature and exposes the students to a wide range of areas of electrical and computer engineering. The authors believe it is important to give freshmen a broad perspective of what ECE is all about, and to...
Faculty members from Georgia Tech's School of electrical and computer engineering (ECE) have worked jointly with engineers from National Instruments to develop a new freshman course. This course, entitled 'Introduction to ECE Design,' is constructed around the LEGO Mindstorms NXT robotics kit. This course addresses the diverse objectives of providing students with a systems-level design experience...
While students generally demonstrate an intuitive understanding of transfer function magnitude terms such as low pass and band pass, they are often bewildered by the concepts of phase and its relationship to delay. We find that although students can easily learn the formulas and demonstrate the computer commands necessary to produce phase plots, they frequently cannot explain what the plot means,...
One hundred thirty three (133) sound/speech features extracted from pitch, Mel frequency cepstral coefficients, energy and formants were evaluated in order to create a feature set sufficient to discriminate between seven emotions in acted speech. After the appropriate feature selection, multilayered perceptrons were trained for emotion recognition on the basis of a 23-input vector, which provide information...
A table of squares for n-bit numbers can be used for LUT-based multiplication for n-bit numbers. This squares-based multiplication using look-up table simplifies the process as a simple addition/subtraction and table look-up, and, thus, speed-ups the operating speed. This study presents a low-cost, yet efficient square generator using a recursive scheme.
This work concerns the design of low power signal processing systems at overscaled supply voltage, in which the behavior of computer arithmetic units in response to overscaled voltage plays an importance role. We show that different hardware implementations of the same computer arithmetic function may respond to overscaled voltage very differently and result in different energy saving potential. Therefore,...
In this paper a method for footstep detection and gait event identification is presented. A three-axis accelerometer can be mounted on someonepsilas foot to record the acceleration signals produced by their gait. The data can be analysed in real time or after a period of time to identify the gait events and their respective acceleration values. Data analysis consists of signal processing in order...
Summary form only given. Looking through my word processor files I found that I have authored 15 papers and numerous PowerPoint presentations and tutorials that include the words software defined radio or SDR somewhere in the title. One would think that I would have some understanding of what is a software defined radio. One would think that wouldnpsilat one? SDR has proven to be a many faceted creature...
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