The book explains sound insulation in buildings at a level suitable for both graduate students and expert consultants. Theoretical models are set out for sound transmission in buildings, with an emphasis on thick and heavy constructions. Thus, the description is not restrained by the common assumption of bending waves which is characteristic of thin plates, only. A general description is provided, with the modal density in the structures as a key parameter. At low frequencies statistical energy analysis is replaced by modal energy analysis. Sound transmission through windows and facades is represented by a model that allows any angle on incidence, including the special case of grazing incidence. One chapter is devoted to the subjective evaluation of sound insulation, particularly noise from neighbours, and how this can be applied in a sound classification scheme for dwellings. Measurement methods in building acoustics are presented with emphasis on modern methods using MLS signals or sine sweeps. The analysis and estimation of measurement uncertainty is discussed in detail. In a final chapter examples of experimental buildings with high sound insulation are explained.
The book explains sound insulation in buildings at a level suitable for both graduate students and expert consultants. Theoretical models are set out for sound transmission in buildings, with an emphasis on thick and heavy constructions. Thus, the description is not restrained by the common assumption of bending waves which is characteristic of thin plates, only. A general description is provided, with the modal density in the structures as a key parameter. At low frequencies statistical energy analysis is replaced by modal energy analysis. Sound transmission through windows and facades is represented by a model that allows any angle on incidence, including the special case of grazing incidence. One chapter is devoted to the subjective evaluation of sound insulation, particularly noise from neighbours, and how this can be applied in a sound classification scheme for dwellings. Measurement methods in building acoustics are presented with emphasis on modern methods using MLS signals or sine sweeps. The analysis and estimation of measurement uncertainty is discussed in detail. In a final chapter examples of experimental buildings with high sound insulation are explained.
Adopting a multi-disciplinary approach to the practice of achieving a more acceptable acoustic environment, this book draws on the same basic principles to cover both the outdoors and indoor space. It starts with the fundamentals of sound waves and hearing and goes on to the measurement of noise and vibration, room acoustics, sound absorption, airb
The Stone Age occupations of Qeqertarsuup Tunua (Disko Bugt) are among the most thoroughly surveyed and best known in Greenland. This volume presents the results of the author's research on a regional scale as well as on the scale of a single camp site. It focuses on the horizontal dimensions rather than stratigraphies. The principal objectives are descrip-tions of settlement patterns, dwelling types and the spatial organisation of dwellings. Saqqaq and Dorset culture sites are presented and the results are synthesised and discussed in rela-tion to earlier research in the same region as well as in relation to the Palaeo-Eskimo settle-ments in other parts of Greenland.
Fully updated, the second edition of this book covers the widespread advances in digital imaging technology, techniques, and devices. It discusses the increased power, storage capacity, and use of digital cameras, laptop computers, tablets, and cell phones in forensic science. It addresses methods for presenting evidence in a courtroom, including under Frye and Daubert rules. It also explains concepts with minimal jargon, making it accessible to a wide range of photography, criminal justice, forensic, and legal professionals.
Adopting a multi-disciplinary approach to the practice of achieving a more acceptable acoustic environment, this book draws on the same basic principles to cover both the outdoors and indoor space. It starts with the fundamentals of sound waves and hearing and goes on to the measurement of noise and vibration, room acoustics, sound absorption, airb
Fully updated, the second edition of this book covers the widespread advances in digital imaging technology, techniques, and devices. It discusses the increased power, storage capacity, and use of digital cameras, laptop computers, tablets, and cell phones in forensic science. It addresses methods for presenting evidence in a courtroom, including under Frye and Daubert rules. It also explains concepts with minimal jargon, making it accessible to a wide range of photography, criminal justice, forensic, and legal professionals.
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