Prasanta K. Ghosh

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Grating Compression Transform (GCT) is a two-dimensional analysis of speech signal which has been shown to be effective in multi-pitch tracking in speech mixtures. Multi-pitch tracking methods using GCT apply Kalman filter framework to obtain pitch tracks which requires training of the filter parameters using true pitch tracks. We propose an unsupervised(More)
Reaction of acenaphthoquinone with N-phenyl-o-phenylenediamine in methanol in presence of HCl yielded 7-phenylacenaphtho[1,2-b]quinoxalin-7-ium chloride, [1][Cl]. [1][Cl] is brightly fluorescencent in dichloromethane (λex = 403 nm and λem = 442, 464, 488 nm) and water (λex = 408 nm and λem = 545 nm). Density functional theory (DFT) and time dependent (TD)(More)
Ruthenium, osmium and rhodium complexes of 1,4-di(3-nitrophenyl)-1,4-diazabutadiene (LDAB) of types trans-[RuII(LDAB)(PPh3)2Cl2] (1), trans-[OsII(LDAB)(PPh3)2Br2] (2) and trans-[Rh(LDAB)(PPh3)2Cl2] (3) are isolated and characterized by elemental analyses, IR, mass and 1H NMR spectra including the single crystal X-ray structure determination of 1·2toluene.(More)
Reactions of benzoyl pyridine, o-phenylenediamine and anhydrous ZnX2 in methanol afford imine complexes [Zn(L1)X2] (X = Cl, 1; X = Br, 2) in good yields (L1 = (E)-N(1)-(phenyl(pyridin-2-yl)methylene)benzene-1,2-diamine). The reduction of 1 with NaBH4 affords (E)-N(1)-(phenyl(pyridine-2-yl)methylene)benzene-1,2-diamine (L2H). The reaction of L2H with(More)
We propose two novel temporal domain features of a signal, namely Average Level Crossing Rate (ALCR) and Extrema based Signal Track Length (ESTL) measure. Although these two features differ in their motivation and definition, they show similar properties for general signals. For a single sinusoid, we show that the expression of ALCR and ESTL can be related(More)
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