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Virtual environments and computer games incorporate music in order to enrich the audiovisual experience and further immerse users. Selecting musical content during design-time can have a controversial result based on the preferences of the users involved, while limiting the interactivity of the environment, affecting thus the effectiveness of immersion. In this work, we introduce a framework for the...
Investigating and designing the A/D sampling circuit, at the same time designing the data transfer circuit based on the AT89C5131 USB interface. Firstly converting the analog signals into the digital signals by the A/D sampling circuit, and then transforming the digital signals to AT89C5131 MUC. AT89C5131 MUC transfer data to computer by USB interface, and then processing data by computer. Result...
This paper introduces the method of on-line measurement of the yarn evenness using a CCD image sensor. The sensor is mounted on a movable bracket of the small car. The obtained yarn coefficients of variation in the diameter through computer and digital image processing techniques are compared with those of using off-line USTERII evenness tester. To a certain extent, avoiding affection of the incident...
Music is an integral part of high school students' daily lives, and most use digital music devices and services. The one-week Summer Music Technology (SMT) program at Drexel University introduces underclassmen high school students to music technology to reveal the influence and importance of engineering, science, and mathematics. By engaging participants' affinity for music, we hope to motivate and...
In this paper the theoretical basis for building multibases special processors, the modularprinciple of solution and correlation processing of information flows.
Analysis of neural signals (such as EEG) has long been a hot topic in neuroscience community due to neural signals' nonlinear and non-stationary features. Recent advances of experimental methods and neuroscience research have made neural signals constantly massive and analysis of these signals highly compute-intensive. Analysis of neural signals has been routinely performed upon CPU-based computer...
In this paper, sensors, which are directly installed on the surface of the mill, are used to collect mill's signals by wireless. The frame of the system is introduced and the hardware and software is designed in details in this paper. With the transmission mode of I2S and MCU of AT89S2051, the transform from analog signals to digital signals , data's transmission by wireless is achieved by this system...
This paper describes the EEG based home lighting system that uses voluntary eye blinks extracted from EEG signals to activate the lighting system. The system comprises of a PIC16F877A microcontroller and a lighting circuit. The EEG signals were first filtered to remove artifacts and then passed through the microcontroller which detected the four-second eye blinks using peak detection method. Once...
Condition monitoring, signal processing and data analysis are the key parts of the induction machine (IM) fault detection scheme. Frequency analysis of the signal acquired through the condition monitoring is commonly applied for motor fault detection. This paper is intended to investigate the ability and effectiveness of Fourier analysis of motor current for broken rotor bar detection. Accordingly,...
Reconfigurable Computing has been making inroads in the front-end digital signal processing systems deployed at radio telescopes around the world. The National Radio Astronomy Observatory (NRAO) at Green Bank has developed a signal processing system expressly for pulsar search and timing observations. These observations are among the most demanding experiments in terms of real-time computational and...
A new multi-channel virtual ultrasonic testing system which consists of PC cards, focus probes and machine system is proposed. Using this system the A, B, C scan, data processing and quantitative analysis can be realized. In addition, computer technology, virtual instrument, signal and image process technology are introduced to ultrasonic nondestructive testing and the range of application of traditional...
In source localization one estimates the location of a source using a variety of relative position information. Such relative position information is often provided by the received signal strength (RSS) which is in turn affected by log normal shadowing. This paper considers optimal sensor placement in two dimensions so that a source can be localized optimally from the RSS at various non-collinear...
In this paper, the analysis of underground power cables is performed using Fourier analysis with the objective of detecting fault and average life of the cable. Three types of cables are used in this experiment; a normal cable, a shorted cable, and a cable with holes. The impedance in each case is computed and Fourier transformation is applied so that the resulting impedance magnitude and impedance...
We propose efficient square-root and division free algorithms for inverse LDLT factorization and the wide-sense Givens rotation, mainly for conventional multiply-add digital computers. The algorithms are then employed to propose a fast algorithm for vertical Bell Laboratories Layered Space-Time architecture (V-BLAST). The proposed inverse LDLT factorization avoids the conventional back substitution...
Summary form only given. Interval type-2 fuzzy logic systems (IT2 FLSs) fall into the category of "function approximation," and are widely used in fuzzy logic control, rule-based classification, signal processing, etc. On the other hand, a Perceptual Computer (Per-C) is an implementation of Zadeh's Computing With Words paradigm, and is used to aid people in making subjective judgments. This...
A novel adaptive denoising method based on ensemble empirical mode decomposition (EEMD) and zero-crossing detection is proposed and combined with energy moment and support vector machine(SVM) to apply in fault diagnosis. Firstly, with the method of EEMD, the non-stationary vibration signals are adaptively decomposed into a finite number of intrinsic mode functions(IMF), which can alleviate model mixing...
According to the rectangular pulse signal of the grating displacement sensor, the system realized the displacement signal acquisition, through the grating signal processing and the computer interface. Signal acquisition system of the grating displacement sensor was composed of the grating signal processing circuit based on CPLD and USB interface communication controlled by MCU. Subdivision and direction-judgment...
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