International Cooperation, Convergence and Harmonization of Pharmaceutical Regulations - Lezotre, Pierre-Louis
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Speech enhancement is a classical problem in signal processing, yet still largely unsolved. Two of the conventional approaches for solving this problem are linear filtering, like the classical Wiener filter, and subspace methods. These approaches have traditionally been treated as different classes of methods and have been introduced in somewhat different contexts. Linear filtering methods originate in stochastic processes, while subspace methods have largely been based on developments in numerical linear algebra and matrix approximation theory. This book bridges the gap between these two…mehr

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Produktbeschreibung
Speech enhancement is a classical problem in signal processing, yet still largely unsolved. Two of the conventional approaches for solving this problem are linear filtering, like the classical Wiener filter, and subspace methods. These approaches have traditionally been treated as different classes of methods and have been introduced in somewhat different contexts. Linear filtering methods originate in stochastic processes, while subspace methods have largely been based on developments in numerical linear algebra and matrix approximation theory. This book bridges the gap between these two classes of methods by showing how the ideas behind subspace methods can be incorporated into traditional linear filtering. In the context of subspace methods, the enhancement problem can then be seen as a classical linear filter design problem. This means that various solutions can more easily be compared and their performance bounded and assessed in terms of noise reduction and speech distortion. The book shows how various filter designs can be obtained in this framework, including the maximum SNR, Wiener, LCMV, and MVDR filters, and how these can be applied in various contexts, like in single-channel and multichannel speech enhancement, and in both the time and frequency domains.
Autorenporträt
Dr. Pierre-Louis Lezotre specializes in global regulatory strategy, and is recognized for his passion and expertise on international cooperation, convergence, and harmonization of regulations for pharmaceutical and biotechnology products. He has worked in different cultural environments and lived in both Europe and the United States. Dr. Lezotre studied biology (University of Sciences, Saint-Etienne, France) and drug development (University of Pharmacy, Montpellier, France) from 1992 to 1998. He then received his Master in Regulatory Sciences in 1999 (University of Pharmacy, Lille, France). He also recently completed his PhD in Law with honors (Doctoral School of "Law, Politics and Management,? University of Law, Lille, France). Since 1998, Dr. Lezotre has worked for several international pharmaceutical and biotechnology companies, with increasing levels of responsibility. He has served as a regional and then global regulatory leader for small molecule and biologic/biotech programs in various stages of research and development (from early discovery to life cycle management). He successfully led many global regulatory teams in supporting global registrations of major products and numerous development projects in several therapeutic areas, including dermatology, urology, neurology, and pain. He has been responsible for communications with worldwide Drug Regulatory Authorities and has also worked with external partners/ companies through co-development agreements and business development programs. Dr. Lezotre has recently been invited to teach courses on international regulation in the Regulatory Sciences programs of the University of Southern California (USC).