Tony S. Verma

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We propose a method for sinusoidal modeling that takes into account the psychoacoustics of human hearing using a frame-based perceptually weighted matching pursuit. Working on blocks of the input signal, a set of sinusoidal components for each block is iteratively extracted taking into consideration perceptual significance by using extensions to the well(More)
To study the long term effects of rice straw management practices in a wheat-rice rotation, experiments were started from the dry season (Nov–May) of 1984 to wet season (July–Nov) of 1989. Each year, six straw management practices, viz. control (C), straw incorporation (SI), straw mulch (SM), straw burning (SB), animal manure incorporation (AM), and straw(More)
We present a flexible analysis/synthesis tool for transient signals that extends current sinusoidal and sines+noise models for audio to sines+transients+noise. The explicit handling of transients provides a more realistic and robust signal model. Because the transient model presented is the frequency domain dual to sinusoidal modeling, it has similar(More)
Scalable audio coding is important in network environments, such as the Internet, where bandwidth is not guaranteed, packet loss is common, and client connection data rates are heterogeneous. Signal models provide a general frame work for attacking a wide range of challenges in the unicast delivery of real-time audio over packet switched networks. The(More)
In this paper, we describe an improved method of generating more accurate sinusoidal parameters famplitude, frequency, phaseg from a wideband polyphonic audio source in a multiresolution, nonaliased fashion. This significantly improves upon previous work of sinusoidal modeling that assumes a single-pitched monophonic source, such as speech or an individual(More)
Sinusoidal modeling has enjoyed a rich history in both speech and music applications, including sound transformations, compression, denoising, and auditory scene analysis. For such applications, the underlying signal model must efficiently capture salient audio features (Goodwin 1998). In this article, we present an accurate, efficient, and flexible(More)
In this paper, we describe an computationally efficient method of generating more accurate sinusoidal parameters famplitude, frequency, phaseg from a wideband polyphonic audio source in a multiresolution, non-aliased fashion. This significantly improves upon previous work of sinusoidal modeling that assumes a singlepitched monophonic source, such as speech(More)
To study the interaction effect of Zn and P in a wheat-maize cropping system, a field experiment was conducted at the H.P. Agricultural University Research Station, Palampur (India). Zinc was applied as ZnSO4·7H2O at the rate of 0, 20 and 40 kg per ha and P as superphosphate at the rate of 0, 60 and 120 kg per ha. The direct Zn-P interaction effect was(More)
Imbalanced and inadequate use of chemical fertilizers is responsible for low rice- (Oryza sativa L.) wheat (Triticum aestivum L.) productivity in many resource-poor farmers' fields. Wheat yields in post-rice soils are also constrained due to soil conditions created by puddling in rice, especially in fine to medium textured soils. Organic amendments are(More)