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A virtual sound barrier is an active noise control system that uses arrays of loudspeakers and microphones to create a useful size of quiet zone and can be used to reduce sound propagation, radiation, or transmission from noise sources or to reduce noise level around people in a noisy environment. This book introduces the history, principle, and design methods of virtual sound barriers first, and then describes recent progress in research on the systems. Two virtual sound barrier systems, i.e., planar virtual sound barrier system and three-dimensional virtual sound barrier system, are discussed including applications, limitations and future direction discussions.
This volume presents the proceedings of the Asia-Pacific Vibration Conference (APVC) 2019, emphasizing work devoted to Vibration Engineering for a Sustainable Future. The APVC is one of the larger conferences held biannually with the intention to foster scientific and technical research collaboration among Asia-Pacific countries. The APVC provides a forum for researchers, practitioners, and students from, but not limited to, areas around the Asia-Pacific countries in a collegial and stimulating environment to present, discuss and disseminate recent advances and new findings on all aspects of vibration and noise, their control and utilization. All aspects of vibration, acoustics, vibration an...
This book advances the practice and theory of design ethnography. It presents a methodologically adventurous and conceptually robust approach to interventional and ethical research design, practice and engagement. The authors, specialising in design ethnography across the fields of anthropology, sociology, human geography, pedagogy and design research, draw on their extensive international experience of collaborating with engineers, designers, creative practitioners and specialists from other fields. They call for, and demonstrate the benefits of, ethnographic and conceptual attention to design as part of our personal and public everyday lives, society, institutions and activism. Design Ethnography is essential reading for researchers, scholars and students seeking to reshape the way we research, live and design ethically and responsibly into yet unknown futures.
This companion explores a range of conceptual and practical relationships between sound and space across various disciplines, providing insights from technical, creative, cultural, political, philosophical, psychological, and physiological perspectives. The content spans a wide range of spatial typologies, from large reverberant buildings to modest and intimate ones, from external public squares to domestic interiors, and from naturally formed environments to highly engineered spaces. These compiled insights and observations explore the vast diversity of ways in which sonic and spatial realms interact. This publication therefore forms important bridges between the intricate and diverse topic...
Anthropology has a critical, practical role to play in contemporary debates about futures. This game-changing new book presents new ways of conceptualising how to engage with a future-oriented research agenda, demonstrating how anthropologists can approach futures both theoretically and practically, and introducing a set of innovative research methods to tackle this field of research.Anthropology and Futures brings together a group of leading scholars from across the world, including Sarah Pink, Rayna Rapp, Faye Ginsburg and Paul Stoller. Firmly grounded in ethnographic fieldwork experience, the book’s fifteen chapters traverse ethnographies with people living with HIV/AIDS in Uganda, disa...
This book highlights the manufacturing and applications of acoustic textiles in various industries. It also includes examples from different industries in which acoustic textiles can be used to absorb noise and help reduce the impact of noise at the workplace. Given the importance of noise reduction in the working environment in several industries, the book offers a valuable guide for companies, educators and researchers involved with acoustic materials.
This book gives a brief review of current development models and governance of urban sharing platforms, and looks into the economic efficiency of a novel market transaction model of sharing economy, which has been accelerated by high-density urban population and the Internet technology. With an aim to solve current problems featuring excessive competition, waste of resources, security risks, and unfair competition, this book delves into the two governance models in accommodation sharing platforms and bike and car sharing platforms and puts forward a multi-dimensional collaborative governance model that involves the participation of enterprises, the government, and the community. Under such a model, the platforms may utilize their own key technologies to implement supervision and solicit feedback; the government may resort to tax regulation and reallocating shared space to mitigate the negative externality effect and promote fair competition; and the community, as the basic unit of a city, may play its part through on-site participation and real-time feedback.
Spatial sound is an enhanced and immersive set of audio techniques which provides sound in three-dimensional virtual space. This comprehensive handbook sets out the basic principles and methods with a representative group of applications: sound field and spatial hearing; principles and analytic methods of various spatial sound systems, including two-channel stereophonic sound, and multichannel horizontal and spatial surround sound; ambisonics; wavefield synthesis; binaural playback and virtual auditory display; recording and synthesis, and storage and transmission of spatial sound signals; and objective and subjective evaluation. Applications range from cinemas to small mobile devices. The only book to review spatial sound principles and applications extensively Covers the whole field of spatial sound The book suits researchers, graduate students, and specialist engineers in acoustics, audio, and signal processing.
Noise-Controlling Casings offers a range of feasible noise-controlling strategies for different kinds of devices generating excessive noise. Depending on the required performance and the availability of energy sources, three solution categories are presented: passive (no external energy is needed, but performance is limited), semi-active (little energy is needed, but performance achieves higher values) and active (best performance, but an external energy source is needed). Two very important benefits of these proposed solutions are global noise reduction (in an entire enclosure or the surrounding space) and compact technology (contrary to other active noise control solutions requiring a larg...
Experimental Techniques, Rotating Machinery & Acoustics, Volume 8: Proceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015, the eighth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: Experimental Techniques Processing Modal Data Rotating Machinery Acoustics Adaptive Structures Biodynamics Damping