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ESTOI for predicting the Intelligibility of speech

Intelligibility listening tests are necessary during development and evaluation of speech processing algorithms, despite the fact that they are expensive and time-consuming.The proposed scheme uses a monaural intelligibility prediction algorithm, which has the potential of replacing some of the listening tests. The proposed algorithm shows similarities to the Short-Time Objective Intelligibility (STOI) algorithm but works for a larger range of input signals. In contrast to STOI, Extended STOI (ESTOI) does not assume mutual independence between frequency bands. ESTOI also incorporates spectral correlation by comparing complete 400-ms length spectrograms of the noisy/processed speech and the clean speech signals. As a consequence, ESTOI is also able to accurately predict the intelligibility of speech contaminated by temporally highly modulated noise sources in addition to noisy signals processed with time-frequency weighting. We show that ESTOI can be interpreted in terms of an orthogonal decomposition of short-time spectrograms into intelligibility subspaces, i.e., a ranking of spectrogram features according to their importance to intelligibility.

Published by: Nitesh Kumar, Karunavathi R K

Author: Nitesh Kumar

Paper ID: V4I4-1467

Paper Status: published

Published: August 13, 2018

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Research Paper

Seismic analysis of box girder bridge

Now a days the box girder bridge is frequently used bridge system in worldwide. Actually, the box girder bridge is commonly used for the long span for the ignoring the heavy weight as compare to the other bridge girder system. CSiBridge v 20.0.0 is used for analyzing dynamic response of box girder bridge. The main objective of this study is analyzing and investigating seismic performance of multi-span with up to five spans 92-meter-long box girder bridge. The seismic performance of box girder bridge is very complex and performance depends on the peak ground motion and, ground motion acceleration. It is done by non-linear time history analysis method. In this study, the three-dimension model and the data of Kobe earthquake are used for dynamic characteristics and showing the maximum response of box girder deck. Response results indicate in terms of deformed shape, absolute acceleration, base shear, base reaction, total energy component and displacement. Thus, the paper suggests that the construction of bridge based on time history analysis will sustain the earthquake up to 6.9 magnitude.

Published by: Firoz Ahmad, M. A. Baig

Author: Firoz Ahmad

Paper ID: V4I4-1469

Paper Status: published

Published: August 13, 2018

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Research Paper

Survey of various transforms to discover optic disc from retina

Early perception and confinement of optic disc are one of the crucial steps to detect the various diseases like Diabetic Retinopathy, Glaucoma and many other. Detection of optic disc in ac exact way is very important in diabetic retinopathy wherein the retina the weak vessels start developing. Each of the vessels in the retina arises from the optic disc and each of them pursue the same directional pattern which is parabolic in nature. Normally Optic disc is circular in shape and it is set down 3 to 4mm to the higher part of the fovea. Diabetic Retinopathy is a disease which affects much of people having a high blood sugar level which will harm the blood vessels present in the retina. Early diagnosis of diabetic retinopathy is very important for which detection of Optic disc plays a very important role. With the help of various transforms like Discrete Wavelet Transform (DWT), Krisch Transform, Bottom Hat Transform can be done in a proper manner. By using DRIVE datasets which is publicly available the suggested method is being evaluated.

Published by: Priyanka Ravi Pujari, K. T. Jadhao

Author: Priyanka Ravi Pujari

Paper ID: V4I4-1457

Paper Status: published

Published: August 13, 2018

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Research Paper

Medical image enhancement using hybrid fusion techniques

Medical image fusion techniques are extensively used to aid medical diagnosis by combining features of two or more images of various modalities such as Computed Tomography (CT), Magnetic Resonance Image (MRI), and positron emission tomography (PET) into a single output image that contains salient features from all inputs. This paper proposes a hybrid fusion algorithm and is applied on a CT and MRI images. The largest Eigenvalue of the covariance matrices of each image are used to obtain weights for next stage image by Principal Component Analysis (PCA) and different frequency components of the input image are separated by Discrete Cosine Transform (DCT), noise in output images from first two stages. Performance evaluation of CT-MRI image fusion with the hybrid algorithm by Discrete Wavelet Transform (DWT) improves the image quality compared to established methods. Overall, the non-linear fusion rule holds strong potential to help improve image fusion applications in medicine and in other fields.

Published by: Kandi Sravanthi

Author: Kandi Sravanthi

Paper ID: V4I4-1441

Paper Status: published

Published: August 10, 2018

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Thesis

Design of heat recovery agent of producer gas byproduct system in limekilns

ITC PSPD (Bhadrachalam) is one of the biggest and renowned paperboard manufacturers in India. The unit has 7 paper and board manufacturing machines powered by its own thermal power plant of total capacity 125 MW with a network of 7 turbines and a battery of 9s boilers, which include 3 no’s Soda recovery boilers and 6 no’s Atmospheric Fluidized bed combustion type coal-fired boilers. The Soda recovery plant is operated with 2 Rotary kilns of 200 and 300 TPH respectively with a lime purity of 79 ± 2.5 as a prime requirement with a firing system of fuel combination 60:40 ratio of producer gas and furnace oil. The producer gas plant is operated with 8 No’s of gasifiers with a capacity of 1400 M3/Hr and coal as an input material. During the process, Coal tar is the byproduct of the producer gas. The outline of the project is to design a heat exchanger to reduce the Tar(Fuel) Viscosity so that it matches the physical properties of conventional fuel (Furnace Oil). This will be helpful in reducing the Furnace oil consumption by 40 percent after substituting furnace oil with Tar. Hence the cost of production is optimized.

Published by: Jaya Prasad Vanam, Gunda Dilleswararao

Author: Jaya Prasad Vanam

Paper ID: V4I4-1450

Paper Status: published

Published: August 10, 2018

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Research Paper

Effect of ammonia on the redox reaction of cobalt(II) with potassium ferricyanide in alkaline medium

The effect of ammonia on the redox reaction of cobalt(II) with potassium ferricyanide was studied potentiometrically as a function of pH, the concentration of ammonia and concentration of cobalt using as platinum as an indicator electrode and saturated calomel electrode as a reference electrode. In the presence of ammonia the formal potential of the Co(III)/Co(II) system is lower than the [Fe(CN)6]3-/ [Fe(CN)6]4- couple at a pH of 9.0 – 11.0, and hence it is possible to oxidize it quantitatively with potassium ferricyanide which is not possible otherwise. Thus, the addition of complexing agent increases the sharpness of the endpoint of titration with ferricyanide. The precision and accuracy of the method have been assessed by the application of lack – of- fit test and other statistical methods. Overall mean recovery and the mean standard analytical errors obtained were 99.81% and 0.0084 respectively. The interference study was carried out to check the possible interference of other metal ions.

Published by: K Kavitha

Author: K Kavitha

Paper ID: V4I4-1451

Paper Status: published

Published: August 10, 2018

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