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Spoken language identification (LID) or spoken language recognition (LR) is defined as the process of recognizing the language from speech utterance. In this paper, a new Fourier parameter (FP) model is proposed for the task of speaker-independent spoken language recognition. The performance of the proposed FP features is analyzed and compared with the legacy mel-frequency cepstral coefficient (MFCC)...
In this paper, a new automatic histogram equalization algorithm which is based on Bi-Histogram Equalization (BHE) is proposed. The proposed method preserves the brightness and also improves the contrast. Mean value of the intensity is used for selecting the thresholds to avoid over enhancement also improving contrast of the image. The calculated mean limits the valley points to divide the histogram...
Fluid chemistry and microbial community patterns in chimney habitats were investigated in two hydrothermal fields located at the Central Indian Ridge. Endmember hydrothermal fluid of the Solitaire field, located ~3 km away from the spreading center, was characterized by moderately high temperature (307°C), Cl depletion (489 mm), mildly acidic pH (≥4.40), and low metal concentrations (Fe ≤ 105 μm and...
Atmospheric parameters such as pressure, temperature, dew-point temperature, relative humidity are obtained from radiosonde data for the subtropical region, Karaikal, India. From these parameters, the vertical distributions of radio refractivity are then determined. The refractive profiles and atmospheric parameters of Karaikal station is compared with few other stations in India.
In the present world, there are many high tech appliances in our homes that make our lives easier. It is necessary to control these appliances remotely. To automate a machine, a secondary brain (another machine) is required to ‘Think’ and control machines to do tasks as per the convenience of the user from long distances. An automation system is proposed for the users to control home electronic appliances...
The objective of this study is to retrieve the Precipitable water vapor (PWV) by analyzing the wet tropospheric delay measurements from the NTUS receiver, and from radiosonde data at Singapore. This paper describes the procedures and results of the analysis of these concurrent measurements, meteorological data.
Logging-while-drilling (LWD) and measurement-while-drilling (MWD) applications have prompted the development of acoustic telemetry for retrieving downhole data. In this paper, a multilevel frequency shift keying (ML-FSK) modulation transceiver with pseudo-coherent differential energy detection is proposed and optimized for such acoustic telemetry applications. The motivation of employing the proposed...
Drill string acoustic telemetry is an effective transmission method to retrieve downhole data in drilling applications. In practice, pipes used for drilling deep wells have slight variation in length. The arrangement of downhole pipes plays a vital role for improving the transmission efficiency of extensional waves transmitted through the drill string. Finite-difference modeling produce the comb-filter-like...
Drillstring acoustic telemetry is an effective transmission method to retrieve downhole data. In this paper, finite-difference algorithm is used for acoustic wave propagation prediction along the drillstring. An impulse excitation signal of time duration 30.87 µs is transmitted from the downhole and the wave displacement at the receiver is found using finite-difference algorithm. The resultant impulse...
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