Hyperacoustics


Book Description







Americas


Book Description

'Americas: Selected Verse and Vignette' seeks to give expression in poem and metaphor to the United States as a personally lived and engaged-with culture. The span, accordingly, involves both site and journey, a roster of art, people, different authorships, film, music, photography, cities, society. Prose sketches both serious and antic as well as verse. American Studies with a difference.







Postmodernity's Musical Pasts


Book Description

Postmodernity's Musical Pasts considers music after 1945 as a representation of concepts such as "historicity" and "temporality". The volume understands postmodernity as a period in which both modernism and postmodernism co-exist. It is attracted to a wider interpretation of "historicity" that focuses on the complex nexus of past-present-future. "Historicity" is understood as leaning closely on "temporality", generally thought of as the linear progression of past, present and future. The volume broadens the absolutist understanding of temporality to include processes which can occur in circular, spiral, transcending and other formations. The book covers an extensive spectrum of topics from classical to popular and neo-traditional musics to concerns of the disciplines of musicology. Such a wide range of topics from both the centre and the periphery of the musicological canon mirrors the eclectic and diverse nature of the postwar era itself. The first section investigates how to understand manifestations of the past in musical composition with regard to time, on the one hand, and with regard to genre, style and idiom, on the other. A second section shows how time and history manifest themselves in art music. A third section takes the contrasts and transitional moments of post-1945 practices further by looking at the temporality of reception from different angles. A final part investigates questions of nostalgia and temporalities of belonging. TINA FR HAUF is Adjunct Assistant Professor at Columbia University, New York and serves on the faculty of The Graduate Center, CUNY. CONTRIBUTORS: Michael Arnold, Susana Asensio Llamas, Georg Burgstaller, Caitlin Carlos, Daniela Fugellie, Tina Fr hauf, John Koslovsky, Lawrence Kramer, Beate Kutschke, Laurenz L tteken, Max Noubel, Joshua S. Walden







New Acoustics Based on Metamaterials


Book Description

This book highlights the acoustical metamaterials’ capability to manipulate the direction of sound propagation in solids which in turn control the scattering, diffraction and refraction, the three basic mechanisms of sound propagation in solids. This gives rise to several novel theories and applications and hence the name new acoustics. As an introduction, the book mentions that symmetry of acoustic fields is the theoretical framework of acoustical metamaterials. This is then followed by describing that acoustical metamaterials began with locally resonant sonic materials which ushered in the concept of negative acoustic parameters such as mass density and bulk modulus. This complies with form invariance of the acoustic equation of motion which again exemplifies the symmetry property of acoustic fields.




Theory of Nonlinear Acoustics in Fluids


Book Description

The aim of the present book is to present theoretical nonlinear aco- tics with equal stress on physical and mathematical foundations. We have attempted explicit and detailed accounting for the physical p- nomena treated in the book, as well as their modelling, and the f- mulation and solution of the mathematical models. The nonlinear acoustic phenomena described in the book are chosen to give phy- cally interesting illustrations of the mathematical theory. As active researchers in the mathematical theory of nonlinear acoustics we have found that there is a need for a coherent account of this theory from a unified point of view, covering both the phenomena studied and mathematical techniques developed in the last few decades. The most ambitious existing book on the subject of theoretical nonlinear acoustics is ”Theoretical Foundations of Nonlinear Aco- tics” by O. V. Rudenko and S. I. Soluyan (Plenum, New York, 1977). This book contains a variety of applications mainly described by Bu- ers’ equation or its generalizations. Still adhering to the subject - scribed in the title of the book of Rudenko and Soluyan, we attempt to include applications and techniques developed after the appearance of, or not included in, this book. Examples of such applications are resonators, shockwaves from supersonic projectiles and travelling of multifrequency waves. Examples of such techniques are derivation of exact solutions of Burgers’ equation, travelling wave solutions of Bu- ers’ equation in non-planar geometries and analytical techniques for the nonlinear acoustic beam (KZK) equation.




Electroacoustics


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Acoustic Microscopy


Book Description

This only and up-to-date monograph on this versatile method covers its use in a range of applications spanning the fields of physics, materials science, electrical engineering, medicine, and research and industry. Following an introduction, the highly experienced author goes on to investigate acoustic field structure, output signal formation in transmission raster acoustic microscopes and non-linear acoustic effects. Further chapters deal with the visco-elastic properties and microstructure of the model systems and composites used, as well as polymer composite materials and the microstructure and physical-mechanical properties of biological tissues. A handy reference for materials scientists, electrical engineers, radiologists, laboratory medics, test engineers, physicists, and graduate students.