The Diffuse Sound Field
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Modelling of Diffuse Sound Field Excitations and Dynamic Response Analysis of Leightweight Structures
Author | : Michael Witting |
Publisher | : Herbert Utz Verlag |
Total Pages | : 192 |
Release | : 1999 |
Genre | : Acoustic emission testing |
ISBN | : 9783896756787 |
Foundations of Engineering Acoustics
Author | : Frank J. Fahy |
Publisher | : Elsevier |
Total Pages | : 465 |
Release | : 2000-09-12 |
Genre | : Technology & Engineering |
ISBN | : 0080506836 |
Foundations of Engineering Acoustics takes the reader on a journey from a qualitative introduction to the physical nature of sound, explained in terms of common experience, to mathematical models and analytical results which underlie the techniques applied by the engineering industry to improve the acoustic performance of their products. The book is distinguished by extensive descriptions and explanations of audio-frequency acoustic phenomena and their relevance to engineering, supported by a wealth of diagrams, and by a guide for teachers of tried and tested class demonstrations and laboratory-based experiments. Foundations of Engineering Acoustics is a textbook suitable for both senior undergraduate and postgraduate courses in mechanical, aerospace, marine, and possibly electrical and civil engineering schools at universities. It will be a valuable reference for academic teachers and researchers and will also assist Industrial Acoustic Group staff and Consultants. - Comprehensive and up-to-date: broad coverage, many illustrations, questions, elaborated answers, references and a bibliography - Introductory chapter on the importance of sound in technology and the role of the engineering acoustician - Deals with the fundamental concepts, principles, theories and forms of mathematical representation, rather than methodology - Frequent reference to practical applications and contemporary technology - Emphasizes qualitative, physical introductions to each principal as an entrée to mathematical analysis for the less theoretically oriented readers and courses - Provides a 'cook book' of demonstrations and laboratory-based experiments for teachers - Useful for discussing acoustical problems with non-expert clients/managers because the descriptive sections are couched in largely non-technical language and any jargon is explained - Draws on the vast pedagogic experience of the writer
Acoustic Absorbers and Diffusers
Author | : Trevor J. Cox |
Publisher | : CRC Press |
Total Pages | : 495 |
Release | : 2009-01-26 |
Genre | : Architecture |
ISBN | : 0203893050 |
Absorbers and diffusers are two of the main design tools for altering the acoustic conditions of rooms, semi-enclosed spaces and the outdoor environment. Their correct use is important for delivering high quality acoustics. Unique and authoritative, this book decribes how to effectively measure, model, design and apply diffusers and absorbers. It is a resource for new and experienced acousticians, seeking an understanding of the evolution, characteristics and application of modern diffusers. Absorption is a more established technology and so the book blends traditional designs with modern developments. The book covers practical and theoretical aspects of absorbers and diffusers and is well illustrated with examples of installations and case studies. This new edition brings Acoustic Absorbers and Diffusers up-to-date with current research, practice and standards. New developments in measurement, materials, theory and practice since the first edition (published in 2004) are included. The sections on absorbers are extended to include more about noise control.
Acoustic Field Analysis in Small Microphone Arrays
Author | : Roman Scharrer |
Publisher | : Logos Verlag Berlin GmbH |
Total Pages | : 156 |
Release | : 2013 |
Genre | : Science |
ISBN | : 3832534539 |
In this work, the possibilities of an acoustic field analysis in small microphone arrays are investigated. With the increased use of mobile communication devices, such as smartphones and hearing aids, and the increase in the number of microphones in such devices, multi-channel signal processing has gained popularity. Apart from the definite signal processing, this thesis evaluates what information on the acoustic sound field and environment can be gained from the signal of such small microphone arrays. For this purpose, an innovative sound field classification was developed that determines the energies of the single sound field components. The method is based on spatial coherences of two or more acoustical. The method was successfully verified with a set of simulated and measured input signals. An adaptive automatic sensor mismatch compensation was created, which proved able to fully compensate any slow sensor drift after an initial training. Further, a new method for the blind estimation of the reverberation time based on the dependency of the coherence estimate on the evaluation parameters was proposed. The method determines the reverberation time of a room from the spatial coherence between two or more acoustic sensors.
The Interaction Between a Cylindrical Pipe and a Diffuse Sound Field
Author | : Allen C. Fagerlund |
Publisher | : |
Total Pages | : 104 |
Release | : 1974 |
Genre | : Acoustic emission |
ISBN | : |
Handbook of Ultrasonics and Sonochemistry
Author | : Muthupandian Ashokkumar |
Publisher | : |
Total Pages | : |
Release | : |
Genre | : Ultrasonics |
ISBN | : 9789812874702 |
Experimental Studies on the Interaction of Strong Sound Fields with Free Convection Boundary Layers
Author | : E. E. Soehngen |
Publisher | : |
Total Pages | : 84 |
Release | : 1960 |
Genre | : Heat |
ISBN | : |
Experiments have been conducted on the interaction of strong sound fields with freq convection boundary layers on horizontal heated cylinders of 0.750-inch diameter. The interaction effects were observed through the measurements of total heat transfer from the cylinders to air under the influence of different types of sound environments. Three different types of sound fields were employed for the experiments: (1) standing plane waves generated by loud-speakers in an anechoic chamber; (2) Traveling plane wave fields generated by a mechanical siren in an anechoic duct; (3) Constant pressure or diffuse sound fields generated by a mechanical siren in a reverberant chamber. In all cases the generated sound was monochromatic ...