نتایج جستجو برای: sigma modulation

تعداد نتایج: 171785  

2004
Jia-Hsin Hsieh Chung-Hsien Wu

This paper proposes an approach for unsupervised speaker segmentation and gender discrimination of broadcast news. In this paradigm, a speaker segmentation mechanism using MDL-based Gaussian model is firstly adopted to determine the speaker changes using mean and covariance of the Gaussian model. These speaker segments partitioned by speaker changes are smoothed and discriminated into male or f...

Journal: :Operations Research 2009
J. S. Kennedy Peter A. Forsyth Kenneth R. Vetzal

If the price of an asset follows a jump diffusion process, the market is in general incomplete. In this case, hedging a contingent claim written on the asset is not a trivial matter, and other instruments besides the underlying must be used to hedge in order to provide adequate protection against jump risk. We devise a dynamic hedging strategy that uses a hedge portfolio consisting of the under...

2001
Stephen P. Martin James D. Wells

We study the muon anomalous magnetic dipole moment in supersymmetric theories. The impact of the recent Brookhaven E821 experimental measurement on both modelindependent and model-dependent supersymmetric parameter spaces is discussed in detail. We find that values of tanβ as low as 3 can be obtained while remaining within the E821 one-sigma bound. This requires a light smuon; however, we show ...

2007
Gavin Kearney Enda Bates Frank Boland Dermot Furlong

The performance of various spatialization techniques is evaluated for a distributed audience using the nonideal speaker arrangements found in small concert halls. The methods under evaluation are Second Order Ambisonics, Vector Base Amplitude Panning, Delta Stereophony and Spat with B-format Ambisonics encoding. Each method is assessed in terms of its localization accuracy. The data is presente...

Journal: :Pattern Recognition 2018
Josef Kittler Cemre Zor Ioannis Kaloskampis Yulia Hicks Wenwu Wang

The state of classifier incongruence in decision making systems incorporating multiple classifiers is often an indicator of anomaly caused by an unexpected observation or an unusual situation. Its assessment is important as one of the key mechanisms for domain anomaly detection. In this paper, we investigate the sensitivity of Delta divergence, a novel measure of classifier incongruence, to est...

2007
Alexander Marshall

ABSTRACT Context Mash-ups are a new generation of Web-based applications which aggregate and stitch together third-party data. A mash-up usually comprises of unusual or innovative composition of content which is often collected or obtained from unrelated data sources. This data is then displayed in a format suitable for easy human consumption. This form of representation can often lead to comme...

2000
Peter Kiss Jose Silva Un-Ku Moon John T. Stonick Gabor C. Temes

Cascaded delta-sigma (MASH) converters offer a good compromise between high accuracy, robust stability and speed. However, they are very sensitive to analog circuit imperfections. This paper presents an improved adaptive on-line digital compensation of these errors. Behavioral and circuitlevel simulations have confirmed an achievable 13-bit performance and 6-MHz bandwidth for the proposed ADC.

1998
Martin Grothaus

A mathematically rigorous realization of Feynman integrals is given. The construction works for quadratic actions (there is only a restriction to certain time intervals). These techniques enable the calculation of the semi-classical approximation for a given Feynman prop-agator. Finally, delta sequences in Gaussian analysis are presented and their connection to semi-classical approximation is d...

Journal: :CoRR 2015
Rongrong Wang

It is well known that a discrete band-limited signal can be made broad-banded if we randomly permute its entries. In this paper, we study the efficacy of such spectral whitening procedure and its application to Sigma Delta quantization in Compressed Sensing. As a side result, we show that a similar whitening phenomenon can be observed in a broad class of non-Fourier orthogonal transformations.

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