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1219 articles for “Signals”
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Speaker Segmentation Using Non Linear Energy Operator Based Variance Spectral Flux
Abstract: AbstractSpeaker segmentation is considered to be a process that attempts to find speaker segment boundaries in a given audio stream. It can be used in various applications of speaker diarization, speaker indexing, word count etc. Classification of speech and non-speech can be obtained by traditional method of variance spectral flux (VSF). In this paper, we investigate the new techniques to perform the speaker segmentation task for multiple speakers in one …
Published in Current Trends in Signal Processing · Vol. 7, Issue 3, 2017 · pp. 1–6 Read article
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P- and T-wave Characterization in the Presence of U-wave in Electrocardiogram
Abstract: AbstractEven after being noticed around a century ago the U-wave has not been studied much as compared to the other waveforms of the electrocardiogram (ECG). In this proposed work the effect of presence of U-wave on morphology of P-waves and T-waves has been studied. Characteristics of P-waves and T-waves from ECG beats with an U-wave has been compared with the P-waves and T-waves from ECG beat with an U-wave. Arithmetic …
Published in Current Trends in Signal Processing · Vol. 7, Issue 3, 2017 · pp. 30–34 Read article
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Analysis of Swastika (Mythological Symbol) Shaped Split-Ring Resonators and Complementary Split-Ring Resonators Coupled to Planar Microstrip Transmission Lines and Microstrip Patch Antenna
Abstract: AbstractHere in this paper, we have developed a new kind of metamaterial unit cell in the shape of a Hindu mythological symbol ‘Swastik’. Here we designed and analyzed the behavior of split ring resonators (SRRs), complementary split ring resonators (CSRRs) and microstrip transmission line. Here we also investigated the electromagnetic behavior of microstrip transmission line coupled with metamaterial unit cells. The proposed analysis is useful to design the compact microwave …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 10–22 Read article
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Video Anomaly Detection using Kalman Based Support Vector Technique
Abstract: AbstractThe digital video processing technology has boomed since last many years. The video processing is done using sum of absolute differences and with the image processing block set. We first calculate motion vectors between successive frames and use them to reduce redundant information. The method uses optical flow algorithm to calculate changes in the intensity of the pixels of the images. Median filtering is used for background extraction which is …
Published in Current Trends in Signal Processing · Vol. 8, Issue 2, 2018 · pp. 4–11 Read article
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INVESTIGATION OF MICROSTRIP BANDPASS FILTER FOR S-BAND APPLICATION
Abstract: Abstract— Microstrip bandpass filter is presented in this paper for S-band application. The filter employs the microstrip line with port matching topology and plane ground to operate in S-band frequency range. CST Microwave Studio simulator is used for simulation and Rohde & Schwarz Vector Network Analyzer is used for measurement. Filter has size of 120 mm x20 mm and fabricated using low cost FR-4 substrate of 1.6 mm thickness and …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 28–32 Read article
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Design of a Capacitive Loaded and Composite Split Ring Resonator Based Monopole Patch Antenna
Abstract: AbstractHere we have designed a monopole antenna at 2.8 GHz frequency and then we have loaded a metamaterial unit cell at the top of the monopole antenna and the same unit cell is also used as composite split ring resonator (CSRR) and incorporates with the same antenna. In both of the cases we have calculate the resonant frequency and gain of the antenna.Keywords: Metamaterials, microwave filters, splitring resonators (SRRs)\Cite this …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 23–27 Read article
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Reduction of Mutual Coupling Losses for Dual-frequency Patch Antennas Using Modified Microstrip I-Section
Abstract: AbstractIn this paper, a compact design using modified “I” shaped microstrip section between dual frequency patch antenna array to reduce mutual coupling is presented. Problem of performance degradation of an antenna has to be faced because of mutual coupling. The results of simulation show that coupling reduced from –11.3 to –7.91 dB at 2.40 GHz and from –18.3 to –14.70 dB at 4.5 GHz. Description of antenna design and results …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 33–38 Read article
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Blynk-based Water Level Monitoring System
Abstract: AbstractIn this study, Blynk-based water level monitoring system presented as a medium of data transmission. Blynk application is having a stand with iOS and Android apps to control Android and Raspberry pi over the Internet. We created a web dashboard where simply drag and the drop the widgets present in it. This application is installed in our iOS/Android devices which are used to monitor the water level using ultrasonic sensor …
Published in Current Trends in Signal Processing · Vol. 8, Issue 2, 2018 · pp. 1–3 Read article
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Detection of Bus Driver Fatigue Based on Robust Visual Analysis of Eye State and Blowing an Alarm
Abstract: AbstractDriver's deficiency is one of the significant purposes behind car crashes, especially for drivers of wide vehicles, (for example, transports and overwhelming trucks) in perspective of conceded driving periods and fatigue in working conditions. In this paper, we propose a dream based exhaustion recognizing confirmation structure for transport driver watching, which is clear and flexible for sending in transports and critical vehicles. The structure contains modules of head-bear unmistakable evidence, …
Published in Current Trends in Signal Processing · Vol. 8, Issue 2, 2018 · pp. 34–43 Read article
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Design of PID Controller using PSO Algorithm for PFR System
Abstract: AbstractThe paper presents to design Proportional-Integral Derivative (PID) controller parameters for PFR system using Particle Swarm Optimization (PSO) Algorithm. The design goal is to minimize the optimal parameters of the integral errors and reduce transient response by minimizing overshoot, settling time and rise time of step response. First an objective function is defined, and then by minimizing the objective functions using PSO Algorithm. The PFR system is very important equipment …
Published in Current Trends in Signal Processing · Vol. 8, Issue 3, 2018 · pp. 24–28 Read article
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Investigation on Various Routing Protocols in Ad Hoc Networks
Abstract: AbstractThis paper diligently investigates and analysis recent works on ad hoc network protocols and gives an in-depth comparison of all protocols, thus suggesting which one to use for higher performance. In recent years more emphasis is being laid on wireless ad hoc networks that is MANET (Mobile Ad hoc Network) or WANET (Wireless ad hoc Network). This evolution has undergone a remarkable and unstoppable change of trend. As the topology …
Published in Current Trends in Signal Processing · Vol. 8, Issue 3, 2018 · pp. 7–12 Read article
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A Review on Algorithms of Cluster Head in Mobile Ad Hoc Networks
Abstract: AbstractMobile ad hoc networks consists of mobile nodes that communicates with each different with none mounted topology. Cluster head choice, energy consumption and security may be a great challenge for MANET recently. Optimizing cluster head choice minimizes the energy consumption during a specific network and in addition reduces the information transmission overheads. There are several algorithms for cluster head choice that are supported many parameters. For higher utilization of energy, …
Published in Current Trends in Signal Processing · Vol. 8, Issue 3, 2018 · pp. 1–6 Read article
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An Advanced Wireless Network Security
Abstract: AbstractThis paper focuses on an application of Logarithmic-Probability Theory (LPT) over the Wireless Network Security (WNS). The compact principle of LPT generalizes to the improvement of the security of the wireless network. The capacity of WNS is studied in this paper also via discrete probability distribution function. The channels are established to set the new system of WNS. To communicate with efficiency by source coding is an objective of this …
Published in Current Trends in Signal Processing · Vol. 8, Issue 3, 2018 · pp. 18–23 Read article
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A Low Delay Two-Channel Quadrature Mirror Filter Bank using IIR Filter
Abstract: IIR filters have the advantage of low delay, high selectivity and stopband attenuation as compared to their counterpart FIR filters. In the present work, a low delay two-channel Quadrature Mirror Filter (QMF) bank using IIR filter has been proposed. The IIR prototype filter has been designed by approximating the FIR lowpass filter using the least square approximation. The length of the IIR filter has been selected using the bi-section method. …
Published in Current Trends in Signal Processing · Vol. 7, Issue 2, 2017 · pp. 1–7 Read article
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A Survey: Video Stabilization Techniques for Handheld Videos
Abstract: Taking selfies and videos from multimedia devices such as mobile phone cameras, smart phones, and camcorders is a very recent trend. Video stabilization is an important technology which aims at removing annoying shaky motion from videos. Video sequences captured by handheld cameras exhibit various spatiotemporal distortions which cause unpleasant visual experience. To overcome this problem and to get rid of unwanted camera motions various video stabilization techniques are designed which …
Published in Current Trends in Signal Processing · Vol. 7, Issue 2, 2017 · pp. 8–12 Read article
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Homogeneous Video Transcoding Functions for High-Efficiency Video Coding
Abstract: High-efficiency video coding (HEVC) is the successor of H.264/AVC and it gives the higher compression ratio and high quality video than H.264. But, HEVC increases the computational complexity of video coding due to its flexible quad tree partitioning structure. Transcoding algorithms are very much required to associate the HEVC standard into real applications. Homogeneous video transcoding is used for conversion between the same video formats. A higher quality video at …
Published in Current Trends in Signal Processing · Vol. 7, Issue 2, 2017 · pp. 32–36 Read article
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Multiband Antenna Designing using Proximity Coupled Technique
Abstract: AbstractIn this paper, author proposed a multiband antenna a circular patch and proximity coupled feeding technique. This feeding technique not only showed good result, it made the antenna multiband as well. Author fabricated this antenna to compare it with simulation result and found that fabrication results are also promising. This simulated antenna is a miniaturized four-band antenna which has the capability to operate at four distinguished frequencies. This proposed design …
Published in Current Trends in Signal Processing · Vol. 8, Issue 3, 2018 · pp. 13–17 Read article
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FPGA Implementation of Reed Solomon Encoder and Decoder
Abstract: Abstract: Forward Error Correcting (FEC) is a technique employed to enhance data security & reliability. An efficient coding technique is essential to ensure data security. Reed Solomon Codes are widely used to provide error correction capability against burst error. This paper presents the design & FPGA implementation of RS (7, 3) codes. The design is entirely parameterized and can be scaled readily for a wide range of a number of …
Published in Current Trends in Signal Processing · Vol. 9, Issue 1, 2019 · pp. 10–16 Read article
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Analysis of Low Bit Rate Audio Compression System using Linear Predictive Coding
Abstract: Abstract The point of the task is to build up a framework for encoding great quality discourse at a low bit rate. To execute this, we have utilized the most dominant discourse investigation system called Linear Predictive Coding (LPC). It utilizes tenth request Levinson-Durbin Recursion calculation to achieve the errand. It gives amazingly exact evaluations of discourse parameters and is moderately effective for computation. The discourse flag of guys and …
Published in Current Trends in Signal Processing · Vol. 9, Issue 1, 2019 · pp. 1–6 Read article
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VME Interfacing for SLAVE PCB on FPGA by using VIVADO
Abstract: Abstract: In this paper, we have presented a brief review on VME bus interface. Various studies have revealed that the VME bus is a widely used industrial bus, which is applied in military, industrial, aerospace, communication and control applications. It uses the Euro card format, its high performance, and its versatility are some of the reasons that it appeals to a wide range of users. The designer friendly and user-friendly …
Published in Current Trends in Signal Processing · Vol. 9, Issue 1, 2019 · pp. 26–29 Read article