From the reviews: "The book is devoted to the problems of speech acquisition in complex acoustic environment. It is tutorial in nature with a detailed exposition of the latest achievements and state-of-the-art in the field. Open questions and further research direction are also explored. ... The book will be useful for a large audience, ranging from researchers and PhD students, to practicing engineers, either just approaching in the field or already having years of experience." (Tzvetan Semerdjiev, Zentralblatt MATH, Vol. 1106 (8), 2007)