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Acoustics Information And Communication

Author: Ning Xiang
Publisher: Springer
ISBN: 3319056603
Size: 53.85 MB
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This book explores the life and scientific legacy of Manfred Schroeder through personal reflections, scientific essays and Schroeder’s own memoirs. Reflecting the wide range of Schroeder’s activities, the first part of the book contains thirteen articles written by his colleagues and former students. Topics discussed include his early, pioneering contributions to the understanding of statistical room acoustics and to the measurement of reverberation time; his introduction of digital signal processing methods into acoustics; his use of ray tracing methods to study sound decay in rooms and his achievements in echo and feedback suppression and in noise reduction. Other chapters cover his seminal research in speech processing including the use of predictive coding to reduce audio bandwidth which led to various code-excited linear prediction schemes, today used extensively for speech coding. Several chapters discuss Schroeder’s work in low-peak factor signals, number theory, and maximum-length sequences with key applications in hearing research, diffraction gratings, artificial reverberators and de-correlation techniques for enhancing subjective envelopment in surround sound. In style, the articles range from truly scientific to conversationally personal. In all contributions, the relationship between the current research presented and Manfred Schroeder’s own fields of interest is, in general, evident. The second part of the book consists of Schroeder’s own memoirs, written over the final decade of his life. These recollections shed light on many aspects not only of Schroeder’s life but also on that of many of his colleagues, friends and contemporaries. They portray political, social and scientific events over a period that extends from pre-war to the present. These memoirs, written in an inimitable and witty style, are full of information, entertaining and fun to read, providing key insight into the life and work of one of the greatest acousticians of the 20th century.

Architectural Acoustics Handbook

Author: Ning Xiang
Publisher: Information and Communication
ISBN: 9781604270044
Size: 14.75 MB
Format: PDF, ePub
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This full-color book contains the state-of-the-art knowledge and latest trends and developments in architectural acoustics research. This reference will play a fundamental role in the sustainable progress of architectural acoustics research and practical applications. World-renowned experts in the field from both the research and consulting communities contributed to the 15 chapters covering a wide range of sub-fields including computational modeling, noise, vibration controls, and environmental acoustics in the built environment and around buildings. With information not found anywhere else, this handbook is geared for architectural acoustics research, education in academia, and practical applications among acoustics consultants and industry engineers. It is divided into two Parts: Architectural Acoustics Essentials and Architectural Acoustics Practice.

Computer Speech

Author: Manfred Robert Schroeder
Publisher: Springer Science & Business Media
ISBN: 9783540643975
Size: 43.34 MB
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Suitable for nonspecialists, this introduction to multimedia speech applications discusses automatic speech recognition, speaker verification, access control, and speech and audio compression for mobile communication and the Internet. The book also covers the basics of human hearing and signal analysis, and includes brief history of speech research. 80 illus.

Linear Predictive Coding And The Internet Protocol

Author: Robert M. Gray
Publisher: Now Publishers Inc
ISBN: 1601983484
Size: 75.74 MB
Format: PDF
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In December 1974 the first realtime conversation on the ARPAnet took place between Culler- Harrison Incorporated in Goleta, California, and MIT Lincoln Laboratory in Lexington, Massachusetts. This was the first successful application of realtime digital speech communication over a packet network and an early milestone in the explosion of realtime signal processing of speech, audio, images, and video that we all take for granted today. It could be considered as the first voice over Internet Protocol (VoIP), except that the Internet Protocol (IP) had not yet been established. In fact, the interest in realtime signal processing had an indirect, but major, impact on the development of IP. This is the story of the development of linear predictive coded (LPC) speech and how it came to be used in the first successful packet speech experiments. Several related stories are recounted as well. The history is preceded by a tutorial on linear prediction methods which incorporates a variety of views to provide context for the stories. This part is a technical survey of the fundamental ideas of linear prediction that are important for speech processing, but the development departs from traditional treatments and takes advantage of several shortcuts, simplifications, and unifications that come with years of hindsight. In particular, some of the key results are proved using short and simple techniques that are not as well known as they should be, and it also addresses some of the common assumptions made when modeling random signals. The reader interested only in the history and already familiar with or uninterested in the technical details of linear prediction and speech may skip Part I entirely.

Mapping Intermediality In Performance

Author: Sarah Bay-Cheng
Publisher: Amsterdam University Press
ISBN: 9089642552
Size: 23.42 MB
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This insightful book explores the relationship between theater and digital culture. The authors show that the marriage of traditional performance with new technologies leads to an upheaval of the implicit “live” quality of theatre by introducing media interfaces and Internet protocols, all the while blurring the barriers between theater-makers and their audience.

Number Theory In Science And Communication

Author: Manfred Schroeder
Publisher: Springer Science & Business Media
ISBN: 3540852972
Size: 60.38 MB
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"Number Theory in Science and Communication" is a well-known introduction for non-mathematicians to this fascinating and useful branch of applied mathematics . It stresses intuitive understanding rather than abstract theory and highlights important concepts such as continued fractions, the golden ratio, quadratic residues and Chinese remainders, trapdoor functions, pseudo primes and primitive elements. Their applications to problems in the real world are one of the main themes of the book. This revised fifth edition is augmented by recent advances in coding theory, permutations and derangements and a chapter in quantum cryptography. From reviews of earlier editions – "I continue to find [Schroeder’s] Number Theory a goldmine of valuable information. It is a marvelous book, in touch with the most recent applications of number theory and written with great clarity and humor.’ Philip Morrison (Scientific American) "A light-hearted and readable volume with a wide range of applications to which the author has been a productive contributor – useful mathematics outside the formalities of theorem and proof." Martin Gardner

Loudspeaker Handbook

Author: John Eargle
Publisher: Springer Science & Business Media
ISBN: 1475756801
Size: 19.42 MB
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The prospect of writing a book on loudspeakers is a daunting one, since only a multivolume encyclopedia could truly do justice to the subject. Authors writing about this subject have generally concentrated on their own areas of expertise, often covering their own specific topics in great detail. This book is no exception; the author's background is largely in professional loudspeaker application and specification, and the emphasis in this book is on basic component design, operation, measurement, and system concepts. The book falls largely into two sections; the first (Chapters 1-9) emphasizing the building blocks of the art and the second (Chapters 10-16) emphasizing applications, measurements, and modeling. While a thorough understanding of the book requires a basic knowledge of complex algebra, much of it is understandable through referring to the graphics. Every attempt has been made to keep graphics clear and intuitive. Chapter 1 deals with the basic electro-mechano-acoustical chain between input to the loudspeaker and its useful output, with emphasis on the governing equations and equivalent circuits. Chapter 2 is a survey of cone and dome drivers, the stock-in-trade of the industry. They are discussed in terms of type, design, performance, and perfor mance limits. Chapter 3 deals with magnetics. Once a source of difficulty in loudspeaker design, magnetics today yields easily to modeling techniques. Chapter 4 discusses low-frequency (LF) system performance, primarily from the viewpoint of Thiele-Small parameters. We also discuss some of the multi chamber LF systems that became popular during the eighties.


Author: Jonathan Sterne
Publisher: Duke University Press
ISBN: 0822352877
Size: 18.20 MB
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Jonathan Sterne shows that understanding the historical meaning of the MP3, the world's most common format for recorded audio, involves rethinking the place of digital technologies in the broader universe of twentieth-century communication history.

Acoustics Of Musical Instruments

Author: Antoine Chaigne
Publisher: Springer
ISBN: 1493936794
Size: 73.50 MB
Format: PDF
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This book, the first English-language translation of Acoustique des instruments de musique, Second Edition, presents the necessary foundations for understanding the complex physical phenomena involved in musical instruments. What is the function of the labium in a flute? Which features of an instrument allow us to make a clear audible distinction between a clarinet and a trumpet? With the help of numerous examples, these questions are addressed in detail. The authors focus in particular on the significant results obtained in the field during the last fifteen years. Their goal is to show that elementary physical models can be used with benefit for various applications in sound synthesis, instrument making, and sound recording. The book is primarily addressed to graduate students and researchers; however it could also be of interest for engineers, musicians, craftsmen, and music lovers who wish to learn about the basics of musical acoustics.

Acoustics For Engineers

Author: Jens Blauert
Publisher: Springer Science & Business Media
ISBN: 9783642033933
Size: 39.13 MB
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Blauert's and Xiang's "Acoustics for Engineers" provides the material for an introductory course in engineering acoustics for students with basic knowledge in mathematics. In the second, enlarged edition, the teaching aspects of the book have been substantially improved. Carefully selected examples illustrate the application of acoustic principles and problems are provided for training. "Acoustics for Engineers" is designed for extensive teaching at the university level. Under the guidance of an academic teacher it is sufficient as the sole textbook for the subject. Each chapter deals with a well defined topic and represents the material for a two-hour lecture. The 15 chapters alternate between more theoretical and more application-oriented concepts.