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1. |
Record Nr. |
UNIORUON00205026 |
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Autore |
POLJAKOV, Mark Jakovlevič |
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Titolo |
Vissarion Grigor'evič Belinskij / M. Ja. Poljakov |
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Pubbl/distr/stampa |
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Moskva, : Ministerstvo Prosveščenija RSFSR, 1960. 231 p. ; 20 cm. |
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Disciplina |
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Soggetti |
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BELINSKIJ VISSARION GRIGOR'EVIČ |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910337648003321 |
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Autore |
Borisagar Komal R |
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Titolo |
Speech Enhancement Techniques for Digital Hearing Aids / / by Komal R. Borisagar, Rohit M. Thanki, Bhavin S. Sedani |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2019 |
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ISBN |
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Edizione |
[1st ed. 2019.] |
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Descrizione fisica |
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1 online resource (162 pages) |
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Disciplina |
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Soggetti |
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Signal processing |
Image processing |
Speech processing systems |
Biomedical engineering |
Optical data processing |
System safety |
Computer security |
Biometry |
Signal, Image and Speech Processing |
Biomedical Engineering and Bioengineering |
Image Processing and Computer Vision |
Security Science and Technology |
Systems and Data Security |
Biometrics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Introduction -- Generation of Speech Signal and its Characteristics -- Information of Adaptive Filters and Noises -- Information of Wavelet Transforms -- Speech Signal Enhancement using Adaptive Filters -- Speech Signal Enhancement using Adaptive Filters and Wavelet Transforms -- Future Research Direction -- Conclusion. |
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Sommario/riassunto |
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This book provides various speech enhancement algorithms for digital hearing aids. It covers information on noise signals extracted from silences of speech signal. The description of the algorithm used for this purpose is also provided. Different types of adaptive filters such as Least Mean Squares (LMS), Normalized LMS (NLMS) and Recursive Lease Squares (RLS) are described for noise reduction in the speech signals. Different types of noises are taken to generate noisy speech signals, and therefore information on various noises signals is provided. The comparative performance of various adaptive filters for noise reduction in speech signals is also described. In addition, the book provides a speech enhancement technique using adaptive filtering and necessary frequency strength enhancement using wavelet transform as per the requirement of audiogram for digital hearing aids. Presents speech enhancement techniques for improving performance of digital hearing aids; Covers various types of adaptive filters and their advantages and limitations; Provides a hybrid speech enhancement technique using wavelet transform and adaptive filters. |
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3. |
Record Nr. |
UNINA9910437983303321 |
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Autore |
Karnakov Boris Mikhailovich |
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Titolo |
WKB Approximation in Atomic Physics / / by Boris Mikhailovich Karnakov, Vladimir Pavlovich Krainov |
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Pubbl/distr/stampa |
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Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2013 |
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ISBN |
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Edizione |
[1st ed. 2013.] |
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Descrizione fisica |
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1 online resource (179 p.) |
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Disciplina |
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Soggetti |
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Physics |
Atoms |
Mathematical physics |
Quantum theory |
Mathematical Methods in Physics |
Atomic, Molecular, Optical and Plasma Physics |
Mathematical Applications in the Physical Sciences |
Quantum Physics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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WKB-Approximation in Quantum Mechanics -- One-Dimensional Motion -- WKB-Approximation for a Particle in Central Field -- Langer Transformation -- 1/N-Expansion in Quantum Mechanics -- 1/N Expansion for Energy Levels of Binding States -- Wave Functions of 1/n-Expansion -- Rydberg States of Atomic Systems -- Unperturbed Rydberg States of Atoms -- Interaction between a Rydberg Electron and an Electromagnetic Radiation -- Penetrability of Potential Barriers and Quasistationary States -- Quasi-Stationary States of One-Dimensional Systems -- Quasi-Stationary States and Above-Barrier Reflection -- Transitions and Ionization in Quantum Systems -- Adiabatic Transitions -- Ionization of Quantum Systems. |
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Sommario/riassunto |
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This book has evolved from lectures devoted to applications of the Wentzel - Kramers – Brillouin- (WKB or quasi-classical) approximation and of the method of 1/N −expansion for solving various problems in atomic and nuclear physics. The intent of this book is to help students |
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and investigators in this field to extend their knowledge of these important calculation methods in quantum mechanics. Much material is contained herein that is not to be found elsewhere. WKB approximation, while constituting a fundamental area in atomic physics, has not been the focus of many books. A novel method has been adopted for the presentation of the subject matter, the material is presented as a succession of problems, followed by a detailed way of solving them. The methods introduced are then used to calculate Rydberg states in atomic systems and to evaluate potential barriers and quasistationary states. Finally, adiabatic transition and ionization of quantum systems are covered. |
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