Download or read book Binaural Simulation Experiments in the NASA Langley Structural Acoustics Loads and Transmission Facility written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A location and positioning system was developed and implemented in the anechoic chamber of the Structural Acoustics Loads and Transmission (SALT) facility to accurately determine the coordinates of points in three-dimensional space. Transfer functions were measured between a shaker source at two different panel locations and the vibrational response distributed over the panel surface using a scanning laser vibrometer. The binaural simulation test matrix included test runs for several locations of the measuring microphones, various attitudes of the mannequin, two locations of the shaker excitation and three different shaker inputs including pulse, broadband random, and pseudo-random. Transfer functions, auto spectra, and coherence functions were acquired for the pseudo-random excitation. Time histories were acquired for the pulse and broadband random input to the shaker. The tests were repeated with a reflective surface installed. Binary data files were converted to universal format and archived on compact disk. Grosveld, Ferdinand W. and Silcox, Richard (Technical Monitor) Langley Research Center NASA/CR-2001-211255, NAS 1.26:211255
Download or read book Binaural Simulation Experiments in the Nasa Langley Structural Acoustics Loads and Transmission Facility Nasa written by United States. National Aeronautics and Space Administration and published by . This book was released on 2002* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Binaural Simulation Experiments in the NASA Langley Structural Acoustics Loads and Transmission Facility written by Ferdinand W. Grosveld and published by . This book was released on 2001 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A location and positioning system was developed and implemented in the anechoic chamber of the Structural Acoustics Loads and Transmission (SALT) facility to accurately determine the coordinates of points in three-dimensional space. Transfer functions were measured between a shaker source at two different panel locations and the vibrational response distributed over the panel surface using a scanning laser vibrometer. The binaural simulation test matrix included test runs for several locations of the measuring microphones, various attitudes of the mannequin, two locations of the shaker excitation and three different shaker inputs including pulse, broadband random, and pseudo-random. Transfer functions, auto spectra and coherence functions were acquired for the pseudo-random excitation. Time histories were acquired for the pulse and broadband random input to the shaker.
Download or read book Biaural Simulation Experiments in the NASA Langley Structural Acoustics Loads and Transmission Facility written by Ferdinand W. Grosveld and published by . This book was released on 2001 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Efficient Binaural Simulation for the Analysis of Structural Acoustic Data written by Aimee L. Lalime and published by . This book was released on 2002 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Langley Scientific and Technical Information Output 2001 written by and published by . This book was released on 2002 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Aerospace Medicine written by Jeffrey R. Davis, M.D. and published by Lippincott Williams & Wilkins. This book was released on 2008 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its Fourth Edition with a new editorial team, this comprehensive text addresses all medical and public health issues involved in the care of crews, passengers, and support personnel of aircraft and space vehicles. Coverage includes human physiology under flight conditions, clinical medicine in the aerospace environment, and the impact of the aviation industry on global public health. This edition features new chapters on radiation, toxicology and microbiology, dental considerations in aerospace medicine, women's health issues, commercial human space flight, space exploration, and unique aircraft including parachuting. Other highlights include significant new information on respiratory diseases, cardiovascular medicine, infectious disease transmission, and human response to acceleration.
Download or read book Development of an Efficient Binaural Simulation for the Analysis of Structural Acoustic Data written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-30 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Binaural or "virtual acoustic" representation has been proposed as a method of analyzing acoustic and vibroacoustic data. Unfortunately, this binaural representation can require extensive computer power to apply the Head Related Transfer Functions (HRTFs) to a large number of sources, as with a vibrating structure. This work focuses on reducing the number of real-time computations required in this binaural analysis through the use of Singular Value Decomposition (SVD) and Equivalent Source Reduction (ESR). The SVD method reduces the complexity of the HRTF computations by breaking the HRTFs into dominant singular values (and vectors). The ESR method reduces the number of sources to be analyzed in real-time computation by replacing sources on the scale of a structural wavelength with sources on the scale of an acoustic wavelength. It is shown that the effectiveness of the SVD and ESR methods improves as the complexity of the source increases. In addition, preliminary auralization tests have shown that the results from both the SVD and ESR methods are indistinguishable from the results found with the exhaustive method.Lalime, Aimee L. and Johnson, Marty E. and Rizzi, Stephen A. (Technical Monitor)Langley Research CenterACOUSTICS; TRANSFER FUNCTIONS; BINAURAL HEARING; ACOUSTIC PROPERTIES; VIBRATIONAL STRESS; REAL TIME OPERATION; DECOMPOSITION; SIMULATION
Download or read book Experimental and Numerical Analysis of Structural Acousticcontrol Interior Noise Reduction written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-31 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research results contained in this technical report were performed under the NASA grant entitled "Experimental and Numerical Structural Acoustic Control for Interior Noise Reduction". The report is based essentially on partial progress of the Ph.D. dissertation prepared by Jeffrey S. Bevan under direct guidance of Dr. Chuh Mei. The document presents a finite element formulation and control of sound radiated from cylindrical panels embedded with piezoceramic actuators. The extended MIN6 shallow shell element is fully electrical-structural coupled. A piezoelectric modal actuator participation (PMAP) is defined which indicates the actuator performance to each of the offending modes. Genetic algorithm is also employed to validate the sensor and actuator locations determined by the PMAP criteria. The work was conducted at the Department of Aerospace Engineering, Old Dominion University. Mr. Travis L. Turner, Structural Acoustics Branch, NASA Langley Research Center is the technical monitor.Mei, Chuh and Bevan, Jeffrey S.Langley Research CenterNUMERICAL ANALYSIS; EXPERIMENTATION; NOISE REDUCTION; ACOUSTICS; ACTUATORS; RESEARCH; FINITE ELEMENT METHOD; SHALLOW SHELLS; POSITION (LOCATION); PIEZOELECTRICITY; PIEZOELECTRIC CERAMICS; PANELS; NUMERICAL CONTROL; NOISE (SOUND); CYLINDRICAL BODIES
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 Average Evoked Potentials written by Emanuel Donchin and published by . This book was released on 1969 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods, results, and evaluation of research in average evoked potentials.
Download or read book Fundamentals of Aerospace Medicine written by Jeffrey Davis and published by Lippincott Williams & Wilkins. This book was released on 2021-04-14 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encompassing all occupants of aircraft and spacecraft—passengers and crew, military and civilian—Fundamentals of Aerospace Medicine, 5th Edition, addresses all medical and public health issues involved in this unique medical specialty. Comprehensive coverage includes everything from human physiology under flight conditions to the impact of the aviation industry on public health, from an increasingly mobile global populace to numerous clinical specialty considerations, including a variety of common diseases and risks emanating from the aerospace environment. This text is an invaluable reference for all students and practitioners who engage in aeromedical clinical practice, engineering, education, research, mission planning, population health, and operational support.
Download or read book SAM TR written by and published by . This book was released on 1970-03 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frontiers of Human Centered Computing Online Communities and Virtual Environments written by Rae Earnshaw and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rae Earnshawand John A. Vince --_. . _----- 1 Introduction The USPresident's Information Technology Advisory Committee (PITAC)recently advised the US Senate of the strategic importance of investing in IT for the 21st century, particularlyin the areas of software,human-computer interaction, scalable information infrastructure, high-end computing and socioeconomic issues [1]. Research frontiers ofhuman-computer interaction include the desire that interac tion be more centered around human needs and capabilities, and that the human environment be considered in virtual environments and in other contextual infor mation-processing activities. The overall goal is to make users more effective in their information or communication tasks by reducing learning times, speeding performance, lowering error rates, facilitating retention and increasing subjective satisfaction. Improved designs can dramatically increase effectiveness for users, who range from novices to experts and who have diverse cultures with varying educational backgrounds. Their lives could be made more satisfying, their work safer, their learning easier and their health better.
Download or read book Sensation and Measurement written by H.R. Moskowitz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: We planned this book as a Festschrift for Smitty Stevens because we thought he might be retiring around 1974, although we knew very well that only death or deep illness would stop Smitty from doing science. Death came suddenly, unexpectedly - after a full day of skiing at Vail, Colorado on the annual trip with wife Didi to the Winter Conference on Brain Research. Smitty liked winter conferences near ski resorts and often tried to get us other psychophysicists to organize one. Every person is unique. Smitty would have said it's mainly because each of us has so many genes that two combinations just alike would be well-nigh impossible. But most of us strive in many ways to be like others, and to abide by the norms (some smaller number try even harder to be unlike other people); as a result many persons seem to lose their uniqueness, their individuality. Not Smitty. He tried neither to be like others nor to be different. He took himself as he found himself, and ascribed peculiarities, strengths, and weaknesses to his pioneering Utah forebears, in whom he took much pride. His was the true and right nonconformity. He approached each task, each problem, ready to grapple with the facts and set them into meaningful order. And if the answer he came up with was different from everyone else's, well that was too bad.
Download or read book Handbook of Signal Processing in Acoustics written by and published by Springer Science & Business Media. This book was released on 2008 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future of Humanoid Robots written by Riadh Zaier and published by BoD – Books on Demand. This book was released on 2012-01-20 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state of the art scientific and engineering research findings and developments in the field of humanoid robotics and its applications. It is expected that humanoids will change the way we interact with machines, and will have the ability to blend perfectly into an environment already designed for humans. The book contains chapters that aim to discover the future abilities of humanoid robots by presenting a variety of integrated research in various scientific and engineering fields, such as locomotion, perception, adaptive behavior, human-robot interaction, neuroscience and machine learning. The book is designed to be accessible and practical, with an emphasis on useful information to those working in the fields of robotics, cognitive science, artificial intelligence, computational methods and other fields of science directly or indirectly related to the development and usage of future humanoid robots. The editor of the book has extensive R
