Download or read book The ARL FED Anechoic Chamber written by and published by . This book was released on 1981 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the design and acoustic characteristics of the Applied Research Laboratory Department anechoic chamber. It is located on the above-console deck of the Garfield Thomas Water Tunnel situated so as to allow its use in conjunction with the Axial Flow Research Fan (AFRF). The internal free dimensions of the chamber are 2.74 x 3.05 x 1.98 meters (9 x 10 x 6.5 ft.). The sound absorbing walls are composed of polyurethane foam acoustic wedges, air voids, embossed acoustic foam wall lining, plywood and wood frame members. Air intake ducts, baffled and lined with a lead-foam sheet, provide an adequate air volume for the AFRF. Based on measurements of transmission loss and inverse square law, the chamber is considered anechoic for frequencies above 230 Hz and semi-anechoic for lower frequencies.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1982 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The ARL FEU Fluids Engineering Unit Semi Anechoic Chamber written by G. C. Lauchle and published by . This book was released on 1975 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memorandum documents the design and acoustic characteristics of the ARL/Fluids Engineering Unit semi-anechoic chamber. It is located on the first floor of the Garfield Thomas Water Tunnel and has internal dimensions of 11 x 12 x 8 feet. The sound absorbing walls are primarily composed of rock-wool fiberglass insulation, air voids, and wood frame members. Based on measurements of the ambient noise level, reverberation time, transmission loss, and inverse square law, the chamber is considered semi-anechoic for frequencies less than approximately 1kHz and moderately anechoic for greater frequencies.

Download or read book Noise Control Engineering written by and published by . This book was released on 1988 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Download or read book Noise Control Engineering Journal written by and published by . This book was released on 1987 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1982 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1982 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research and Technology written by Goddard Space Flight Center and published by . This book was released on with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra Wideband Short Pulse Electromagnetics 8 written by Carl E. Baum and published by Springer Science & Business Media. This book was released on 2007-12-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the Ultra-Wideband Short-Pulse Electromagnetics Conference series is to focus on advanced technologies for the generation, radiation and detection of ultra-wideband short pulse signals, taking into account their propagation and scattering from and coupling to targets of interest. This Conference series reports on developments in supporting mathematical and numerical methods and presents current and potential future applications of the technology. Ultra-Wideband Short-Pulse Electromagnetics 8 is based on the American Electromagnetics 2006 conference held from June 3-7 in Albuquerque, New Mexico. Topical areas covered in this volume include pulse radiation and measurement, scattering theory, target detection and identification, antennas, signal processing, and communications.

Download or read book Modern Recording Techniques written by David Miles Huber and published by CRC Press. This book was released on 2012-09-10 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the most popular and authoritative guide to recording Modern Recording Techniques provides everything you need to master the tools and day to day practice of music recording and production. From room acoustics and running a session to mic placement and designing a studio Modern Recording Techniques will give you a really good grounding in the theory and industry practice. Expanded to include the latest digital audio technology the 7th edition now includes sections on podcasting, new surround sound formats and HD and audio. If you are just starting out or looking for a step up in industry, Modern Recording Techniques provides an in depth excellent read- the must have book

Download or read book 3 D Sound for Virtual Reality and Multimedia written by Durand R. Begault and published by . This book was released on 2000 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sound Insulation written by Carl Hopkins and published by Taylor & Francis. This book was released on 2020-09-23 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sound insulation is an important aspect of building performance. This book is a comprehensive guide to sound and vibration theory and its application to the measurement and prediction of sound insulation in buildings. It enables the reader to tackle a wide range of issues relating to sound insulation during the design and construction stages of a building, and to solve problems in existing buildings. The book has been written for engineers, consultants, building designers, students in acoustics, researchers and those involved in the manufacture and design of building products. Key aspects are that it: * Explains the fundamental theory using examples that show its direct application to buildings * Guides the reader through the links between measurement and theory * Explains concepts that are important for the application, interpretation and understanding of guidance documents, test reports, product data sheets, published papers, regulations and Standards * Makes direct reference to ISO and EN Standards on sound insulation * Contains a large number of illustrations showing measurements, predictions and example calculations for quick reference Carl Hopkins previously worked on building acoustics and environmental noise at the Building Research Establishment. During this time he was involved with sound insulation in research, consultancy, standardization, and building regulations as well as being an advisor on acoustics to government departments. He is currently a Senior Lecturer at the University of Liverpool within the Acoustics Research Unit of the School of Architecture.

Download or read book Microwave Journal written by and published by . This book was released on 2008 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow Noise Modeling Measurement and Control written by and published by . This book was released on 1993 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wild Sound written by Amy Cimini and published by Oxford University Press. This book was released on 2022-04 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We haven't even made it to breakfast!" Composer Maryanne Amacher (1938-2009) often used this phrase to shorthand her critical and partial approach to knowledge production across the vast artistic, technical and scientific discourses with which she worked. The same could be said about her own musical thought, which encompassed original presentational formats in existing and speculative media and approaches to sound and listening that conjoined real and imagined social worlds. In these conjunctions, this book discerns meeting points between frameworks for life that emerged from Amacher's multidisciplinary study of sound and listening: within acoustical spectra, inside human bodies and ears, across cities and edgleands, hypothetical creatures and virtual, fictive or distanciated environments. These figurations guide interpretative study of six signal projects: Adjacencies (1965/1966); City-Links (1967-1988); Additional Tones (1976 / 1988), Music for Sound-Joined Rooms (1980), Mini Sound Series (1985) and Intelligent Life (1980s) and countless sketches, notes and unrealized projects. The book explores Amacher's working methods with an interpretive style that emphasizes technical study, conceptual juxtaposition, intertextual play and narrative transport. This book also takes up Amacher's work as a guiding thread across shifting social discourses on life in the late 20th century U.S. Her projects convoked figurations of life and technoscience that could be partially and ironically accessed or conceptualized via complex auditory thresholds. This nascent feminist epistemology rooted in feminist science and technology studies centers biopolitical questions about difference and power in artistic and critical work that counts Amacher among its precedents"--