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Noise Reduction from the speech signal using WP coefficients and Modified Thresholding
Krunal S. Panchal
Electronics & Communication Engg.
Year: 2014, Volume:1, Issue : 3
Pages: 1 - 9
Performance of the thresholding based speech enhancement methods largely depend on the estimate of the exact threshold value as well as on the choice of the thresholding function. A speech enhancement method is presented, in which a custom thresholding function is used and employed upon the Wavelet Packet (WP) coefficients of the noisy speech. The thresholding function is capable of switching between modified hard, soft and supersoft thresholding functions depending on a parameter that decides the signal characteristics under consideration. The threshold is determined based on the statistical modeling of the Teager energy operated WP coefficients of the noisy speech. This custom thresholding function is very effective in reduction of the white noise from the noisy speech thus resulting in an enhanced speech with better quality and intelligibility.
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Virtual reality improving businesses in healthcare industries - a meta-analysis
Regidor III Dioso
Computer engineering
Year: 2014, Volume:1, Issue : 3
Pages: 10 - 17
Aim: To analyse how virtual reality improves businesses in healthcare industries.
Methods: Qualitative meta-analysis design, purposive sampling and thematic data analysis were used. The PICO guide helped focus the research question. Search engines were used to select studies/articles from Google Scholars, Scopus and Researchgate. Biases in selecting studies are discussed. Inclusion and exclusion criteria on selecting studies on virtual reality supporting healthcare businesses helped control biases by eliminating other studies found on search engines. A critiquing framework analysed the studies selected.
Outcome: Of the 100 studies found on search engines, only 10 were used to compare with the core areas of healthcare businesses. Odds ratio showed 100% of the 10 studies on virtual reality that gave a significant improvement on healthcare industries.
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Assessment of a residential property for improvements in energy efficiency & renewable energy production
Japen Gor
Energy Conservation and Renewable Energy Sources
Year: 2014, Volume:1, Issue : 3
Pages: 18 - 27
The Energy demand and its supply in recent world have too many consequences associated with it. Numerous green energy options are being explored in the interest of the saving the world environment. Improvement in efficiency of the residential properties is the one of the best and essential solutions of the energy crises. The domestic sector in UK and EU contribute almost half of the total energy consumption, out of which nearly half of the energy is utilised for the heating purposes. The efficiency of energy consumption of the residential property can be improved by introducing the energy efficient appliances, proper insulation and water and central heating advancement. This research incorporates the study of thermal property of existing dwelling in terms of the insulation, air-tightening and ventilation. The research involved the investigation of the selected property for the improvements in its energy demand both thermal and electrical. Inspection of electrical appliances and their energy demand and the suitability of the chosen property for installation of renewable energy system were also focused in detail. After a thorough study of the property it was found that the no element of the house was up to the standards. The energy performance of the dwelling was found to be band E and had opportunities to improve the performance up to band B. Heat loss calculations of the elements of the house suggested that there were possibilities to reduce the heat loss by almost 680 W/K if refurbished to meet the standard minimum requirements. It was also found that in terms of economics the house had potential to save up to almost £500 per year in running cost by making the improvements in thermal property. Most of the appliances of the house were found to have fairly good efficiency except the electrical shower and microwave oven. However none of the appliances were found energy performance certified. The chosen property was also examined for the compatibility with renewable energy sources. The power predictor was mounted on the site to record the real time readings of wind strength, wind direction and solar intensity to verify the suitability of the site. The power predictor found that the site was not suitable for the wind turbine installation which was also verified using Energy Saving Trust's online service. However the site was found appropriate for the solar energy system installation and the economics of the system showed that the payback period for the particular system should be 22 years, which was reasonable in this case.The research was done aiming the ultimate solution for the domestic energy crisis for particular dwelling and the results have shown very promising future if the suggestions are met.
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Brain Tumor Detection with Histogram Equalization and Morphological Image Processing Techniques
Arun Kumar Mittal ; Sukhwinder Singh
Image proceesing
Year: 2014, Volume:1, Issue : 3
Pages: 28 - 31
Accurate segmentation of brain tumors in MR images is challenging due to overlapping tissue intensity distributions and amorphous tumor shape. This study aims to realize mass detection process on brain MRI (Magnetic Resonance Imaging) images. This paper describes the system that is based on histogram equalization and morphological image processing techniques. We tested the results to calculate the effectiveness of the techniques used for segmenting the tumor region in brain images and digit
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Influence of the Interference Due To Co-Existence of Bluetooth and Wi-Fi Transmissions
Er.Gurpreet kaur ; Dr.Dalveer kaur
Electronics and Communication Engineering
Year: 2014, Volume:1, Issue : 3
Pages: 32 - 40
There are various emerging technologies in the field of wireless communcation which are communication, operated on unlicensed ISM (Inductrial, Scientific and Medical). Therefore, they lead to interference due to coexistence on same frequency band such as Bluetooth and Wi-Fi. The growth of devices within 10 meters is growing on day by day as the advancements in technologies. But the interference is a big issuse in the case of voice transmission , as the Bluetooth supports both transmission of data and voice using ACL and SCO packets reapectively. In this paper we investigate the inference in voice packets using Connection Oriented Repeated Transmission for SCO links. For sake of experimental verification , we provide a comprehensive simulation results using Matlab simulink.
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Hardware Implementation of Functional Verification Using Signature Analysis
Sethulakshmi.R ; Greeshma.R
ELECTRONICS AND COMMUNICATION
Year: 2014, Volume:1, Issue : 3
Pages: 41 - 43
The main consequences facing in the semiconductor technology is the testing time, and the one of the solution for it is the BIST, which allows the system to check itself. In these paper the functional test is done sing BIST, that is we checking whether the circuit is behaved as intended. BIST implementation techniques are of different types, in all of the techniques the main disadvantage is that as the size of the CUT changes the LFSR and the MISR also need to change, So to overcome that we designing a BIST processor that can test the circuit unto sixteen bits.
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Performance Based Seismic Analysis of a Building with Soft Storey
Prof. Rekha Shinde ; Prof. Mukesh Shinde
CIVIL ENGINEERING
Year: 2014, Volume:1, Issue : 3
Pages: 44 - 50
"performance-based" seismic design, which can be thought of as an explicit design for multiple limit states Analyzing structures for various levels of earthquake intensity and checking some local and/or global criteria for each level has been a popular academic exercise for the last couple of decades, but the crucial development that occurred relatively recently was the recognition of the necessity for such procedures by a number of practicing engineers influential in code drafting. The main cause of failure of multi-storey multi-bay reinforced concrete frames during seismic motion is the soft storey sway mechanism or column sway mechanism. The seismic inertia forces generated at its floor levels are transferred through the various beams and columns to the ground. The failure of a column can affect the stability of the whole building, but the failure of a beam causes localized effect.The main objective of this search work is to present a detailed 3 dimensional seismic analysis and capacity based design of G+3, G+8 & G+15 storied-three bay reinforced concrete frame. The report provides an introduction to the earthquake, effects, designing of the buildings and studies review of literature pertaining to performance based seismic analysis. It highlights various aspects related to the capacity based designing and explains about Limit State design which an old method of building designing. The study reveals modeling and analysis. The capacity based design of G+3; G+8 & G+15 of old and new building design methods have been modeled and analyzed. The report draws out the result of study and provides a comparative study. The project report also provides a comprehensive conclusion and offers a scope for future research as well.
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Scrambling based secure image transmission
Narinder Kaur ; Kumar Saurabh
Computer Science and Engineering
Year: 2014, Volume:1, Issue : 3
Pages: 51 - 54
An image is a pertinent data because of its visual characteristics. Image should be encrypted appropriately due to sensitivity to changes as well as security perspective. But as of inherent characteristics of image, standard encryption algorithms are not appropriate for image encryption. Recently, research on image encryption using chaos theory has been emerged. In this research, work chaos based encryption technique and prime modulo multiplicative linear congruential generator (PMMLCG) has been proposed to improve the quality of image encryption and to attain the objective of pixel scrambling
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IMAGE COMPRESSION USING STW AND WDR WAVELETS
rohit kumar ; Sukhwinder Singh
computer science engineering
Year: 2014, Volume:1, Issue : 3
Pages: 55 - 57
This paper presents the wavelet techniques used for compression and uncompression of gray scale and true color images. The valid compression methods are STW (Spatial Orientation Tree Wavelet), WDR(Wavelet Difference Reduction) used in this paper, We are using bior 4.4 wavelet for image compression.In this paper Comparison of different quality assessment metrics for the enhancement and compression techniques are carried out. This comparison is done on the basis of subjective and objective parameters. Subjective parameter is visual quality and objective parameters are Peak signal-to- noise ratio (PSNR), Compression Ratio (CR), Mean square error (MSE), L2-norm ratio, Bits per pixel (BPP) and Maximum error
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To Calculate Band Gap in Photonic Crystal in 2D using Finite Difference Time Domain Method
Amanpreet Kaur ; Dr.Amandeep Singh Sappal
Electronics and communication engineering
Year: 2014, Volume:1, Issue : 3
Pages: 58 - 60
The band gap for 2D PhC with different modes and different lattice structures using FDTD have been computed. Three PBGs between the first and the second bands, between the second and the third bands and between the fourth and fifth bands are concluded. Simulation results shows that for band structure computation is of 1D PhC using FDTD, it is found that some additional solutions appear, which are drop out from the general set. They are called spurious solutions. Such solutions appear due to space discretization and because of finite solution time interval and these could be eliminated manually
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Abstract
