Vishakha Pareek

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Residence time distribution (RTD) study of solids in a three-phase pilot-scale bubble column photoreactor has been carried out in order to provide data for the development of an artificial neural network model usable for process optimisation. The experimental data indicated that the RTD of solids was a complex nonlinear function of gas and liquid velocities(More)
Human voice or speech is the most powerful mode for the communication that exist today. The speech production model is commonly known as source filter theory where the source represents the airflow from lungs passing through human glottis and the filter represents the effect of the vocal tract and lip radiation. Glottal source conveys the useful(More)
Coronary Heart Disease (CHD) is one of the major causes of death now-a-days. Due to increased stress level and many other reasons the heart disease are common in human. The heart problems affect the larynx and breathing and consequently the quality of speech. The current work is aimed at understanding the variation of voice parameter in the CHD patients.(More)
QPSK is one of the digital modulation techniques in communication system that has wide applications in the field of wireless, satellite communication, Bluetooth, OFDM etc. The Conventional QPSK modulators designs are generally based on IQ approach. In these modulators multipliers are used to separate the modulating signal into the in-phase and quadrature(More)
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