communications and digital signal processing. Introduction to mobile radio communications. Spread spectrum. Modulation techniques. Introduction. Mobile communication has seen an unprecedented increase in the number of users over the past years. Its success in part is due to the various technologies that have been developed. It is not unlike other stationary communication systems in many respects however it does differ in others‚ one obvious one being the environment the signal and data propagate
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‘Will the challenges emerging with digital knowledge contexts‚ for which digital literacy is being deployed‚ open new horizons for the human art of thinking and creating knowledge?’ (Belisle 2006‚ p.55). Reference: Harvard Style Knowledge can be interpreted in different ways where one scholar defines knowledge as a learnt education another interprets knowledge as intelligence. Knowledge is continuing a process commencing at birth. Belisle (2006) states Knowledge is much more than the transmitted
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A Spatial Median Filter for Noise Removal in Digital Images James C. Church‚ Yixin Chen‚ and Stephen V. Rice Department of Computer and Information Science‚ University of Mississippi {jcchurch‚ychen‚rice}@cs.olemiss.edu Abstract In this paper‚ six different image filtering algorithms are compared based on their ability to reconstruct noiseaffected images. The purpose of these algorithms is to remove noise from a signal that might occur through the transmission of an image. A new algorithm‚ the
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Digital Micromirror Device ( Chunhai Ji Introduction The applications of large screen‚ high brightness electronic projection displays include (1) electronic presentations‚ (2) entertainment‚ (3) status and information and (4) simulation (e.g.‚ training‚ and games). So far the electronic presentation market is being driven by the pervasiveness of software that has put sophisticated presentation techniques into the hands of the average PC user. Normally three of projection display techniques
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DETERMINATION OF ABCESSION SIZE USING DIGITAL IMAGE PROCESSING TO AIDE ENDODONTIC THERAPY Karthikeyan Karunakaran‚ Nikil Ravi‚ Srinevasan MS Abstract-- Endodontic therapy is a treatment where the infected tooth s cavity is removed completely and filled with gutta-percha .During this therapy the size of the abscission in the root apex is important. If the abscission size is small the dentists call them lesion which can be easily removed during the therapy itself. But if it is large‚ the therapy
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DIGITAL Signal PROCESSING DIGITAL SIGNAL PROCESSING refers to manipulating analog information‚ such as sound or photographs that has been converted into a digital form. DSP also implies the use of a data compression technique. DSP refers to various techniques for improving the accuracy and reliability of digital communications. The theory behind DSP is quite complex. Basically‚ DSP works by clarifying‚ or standardizing‚ the levels or states of a digital signal. ADSP circuit is able to differentiate
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Definition of Terms ADAT - A digital 8-track tape deck manufactured by Alesis Corporation that is very popular in recording studios. ADC - (analog-to-digital converter) The hardware that converts an analog audio or video signal into a digital signal that you can process with a computer. Aliasing - Noise that occurs when a high frequency sound exceeds the Nyquist Frequency for a given sample rate. Most analog-to-digital converters prevent aliasing by filtering out sounds above the Nyquist
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without any noise. This microphone doesn’t accept any sound other than sound of knocking. From microphone we get a current signal that is proportional to the energy of the sound wave received by the microphone. Then this signal is send to the signal amplifier. This circuit amplifies the weak signal from microphone so it can be used in processing. Then the amplified signal is send
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APPLICATION OF DSP (DIGITAL SIGNAL PROCESSING) IN MEDICINE: Digital signal processing (DSP) is concerned with the representation of the signals by a sequence of numbers or symbols and the processing of these signals. APPLICATION IN MEDICINE: DSP in medical imaging such as MRI (MAGNETIC RESONANCE IMAGING). DSP used in medicine all over the world. Examples are drawn from a number of areas of medicine and health care‚ and include neurophysiology and obstetrics. Digital Signal Processing (DSP) techniques
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Electromagnetics • Communication/ Signal Processing • Digital • Controls • Solid State The AM Radio & The Telephone System The AM Radio • Understanding the AM radio requires knowledge of several EE subdisciplines: – Communications/signal processing (frequency domain analysis) – Electromagnetics (antennas‚ high-frequency circuits) – Power (batteries‚ power supplies) – Solid state (miniaturization‚ low-power electronics) The AM Radio “System” Transmitter Receiver Signal • The radio system can be
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