41. Positions At Brigham And Women S Hospital Department Of Radiology Electrical Engineering, acoustics, physics, BME, and other disciplines. Physicists,electrical engineers, or computer engineers who might be interested in http://splweb.bwh.harvard.edu:8000/pages/projects/fus/positions_available.htm

Main BWH Home Positions at Brigham and Women's Hospital Department of Radiology/MRI Focused Ultrasound Laboratory Description At the Focused Ultrasound lab, one of the most interesting applications we are developing is completely non-invasive surgery using focused ultrasound. Temperature sensitive MRI imaging is developed and employed to localize, plan, and track the progress of the treatment. Ultrasound treatments are able to selectively damage targeted tissue - this technology shows an excellent potential for non-invasive localized tumor treatment of benign or cancerous tumors. Currently, we are developing equipment and procedures designed in the lab to treat patients. Research also focuses on the ability to close blood vessels or cauterize internal bleeding, sonicating through the skull to treat a variety of neurological disorders, and penetrating the blood/brain barrier for targeted drug delivery and gene-therapy. As for hardware and software, we use magnetic resonance imaging (MRI) extensively. The majority of our transducers are phased arrays with many elements (up to 458 at this point). We have a 1024 channel driving system that is comprised of high efficiency switching amplifiers incorporating independent power control and phase control (via power feedback and phase feedback, developed in this lab for therapeutic ultrasound applications). Almost all equipment for treatment has been designed and fabricated in-house. Simulation software is also developed for predicting acoustic interactions with tissue and bone, simulating temperature elevations in the tissue, simulating tissue death, and simulating various treatment plans. We are also developing treatment planning software and treatment analysis software, as well as MRI image processing algorithms.

42. Musical Acoustics, Physics 103, Final Review Answers Tone holes enable the acoustic length of the instrument to be changed in order The cross section is conical, so the acoustic length is greater than the http://abacus.bates.edu/~jsmedley/phys103/frevans.htm

Musical Acoustics Final Review Answers 1. 2.07 kHz, 4.05 kHz. 2. 5.72 kHz, 11.44 kHz 3. See Fig. 9.14 4. Yes - longitudinal modes, No - transverse modes. Difference is due to restoring forces in bar. 5. The marimba has wooden bars, rather than metal, and they are not perfectly rectangular because the underbelly has been carved to bring several modes into a nearly harmonic relationship. 6. See Fig. 9.16 7. No - the mode frequencies shift because the enclosed air is "springy." 8. Several tests can be used: the finger can lightly touch the bar to feel its movement, or a small microphone may be moved around above the bar to sense where the amplitude is greatest. Mounting the bar in different ways enables one to find nodal lines, or salt or sand may be sprinkled on the bar if the amplitude of vibration is great enough. 9. Chladni patterns are 2-dimensional vibration patterns in which nodal lines and circles are indicated by sprinkling sand or salt on the surface while vibrating it at a resonant frequency. 10. Lightly touching the string at position L/n while striking it gives a spectrum of harmonics nf, 2nf, 3nf, 4nf, 5nf, etc., where n = 1,2,3,4..., corresponding to a pitch frequency nf. In these expressions the fundamental of the original string at its full length is f.

43. Musical Acoustics, Physics 103, Fall 2000, Review For Final Exam Musical acoustics Final Exam Review, Fall 2000. Exam Schedule This includesthe acoustics of percussion instruments, string instruments, the piano, http://abacus.bates.edu/~jsmedley/phys103/finalrev.htm

Musical Acoustics Final Exam Review, Fall 2000 Exam Schedule The exam will take place in Carnegie 204 at 10:30 a.m. on Wednesday, December 13. Please bring only a writing implement and calculator into the room with you. You may not leave the room until you hand in the exam, so please plan accordingly. Exam Basics The exam will focus on the later material in the class, presented between October 31 and December 7, that is, Chapters 9-13. This includes the acoustics of percussion instruments, string instruments, the piano, and wind instruments. Twenty questions will comprise the exam, each worth 5 points for a total of 100 points. Equations will be provided on a separate sheet. Also included will be material from the last three labs of the semester, i.e. bar vibrations, the guitar and the recorder. You should base your study on the following areas: assigned exercises - all solutions are posted on the web page, linked to the syllabus labs - there will be at least one question about each lab, similar to the kinds of questions asked in the labs themeselves class notes - anything discussed in class reading - the assigned reading, especially the material relevant to the three categories above

44. Acoustics (physics) acoustics (physics). In general, the experimental and theoretical science ofsound and its transmission; in particular, that branch of the science that has http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0015922.html

// Show bread crumbs navigation path. breadcrumbs('four'); //> From: www.tiscali.co.uk/reference/ ENCYCLOPAEDIA Hutchinson's Encyclopaedia Men's Health ... Wildlife Frames not supported Frames not supported Encyclopaedia Search Click a letter for the index A B C D ... Z Or search the encyclopaedia: acoustics (physics) Acoustic engineering is concerned with the technical control of sound, and involves architecture and construction, studying control of vibration, soundproofing, and the elimination of noise. It also includes all forms of sound recording and reinforcement, the hearing and perception of sounds, and hearing aids. Related Links physics chemistry laser science ... parapsychology Guinea Flag Red represents work. Yellow symbolizes justice. The design is based on the French tricolour. Green stands for solidarity. Effective date 10 November 1958. Buy Cheap Games Gran Turismo 4 Win £500 cash Volunteer to take part in our Tiscali survey and you could win £500 to spend on whatever you want. Print now Send to a friend Related articles Related products var st_pg=""; var st_ai=""; var st_v=1.0; var st_ci="762"; var st_di="d001"; var st_dd="st.sageanalyst.net"; var st_tai="v:1.2.3";

45. Physics 4060, Acoustics Laboratory physics 4060 acoustics Laboratory. This is an applied acoustics laboratory whichexplores the types of laboratory measurements commonly made in the study http://hyperphysics.phy-astr.gsu.edu/hbase/ph4060/p4060.html

Physics 4060: Acoustics Laboratory This is an applied acoustics laboratory which explores the types of laboratory measurements commonly made in the study of sound. Introduction Measurement of Sound Fields Overview of Resonant Systems Loudspeaker Analysis ... Go Back

46. Alt.sci.physics.acoustics Newsgroup FAQs Version 199603-14. physics-faq/acoustics Subject acoustics FAQ MaintainerAndrew Silverman Enviro@measure.demon.co.uk http://www.faqs.org/faqs/by-newsgroup/alt/alt.sci.physics.acoustics.html

Search FAQs - Full Text Search Subject/Archive Names Search Article Headers alt.sci.physics.acoustics Newsgroup FAQs Usenet FAQs Search Web FAQs Documents ... Cities active-noise-control-faq Subject: Active Noise Control FAQ v1996-03-14 Maintainer: ruckman@xis.com (Dr. Chris Ruckman) Last Posted: Fri, 15 Mar 96 01:50:30 GMT Last-modified: Posting-Frequency: monthly Version: physics-faq/acoustics Subject: Acoustics FAQ Maintainer: Last Posted: Sun, 07 Sep 97 20:55:00 GMT Last-modified: 7th September 1997 Version: Usenet FAQs Search Web FAQs Documents ... Cities Last Update June 15 2004 @ 00:35 AM

47. BUBL LINK: Acoustics Subjects acoustics DeweyClass 534 Resource type articles; physics of Sound Subjects acoustics, harpsichords, quantum physics DeweyClass 534 http://bubl.ac.uk/link/a/acoustics.htm

BUBL LINK Catalogue of Internet Resources Home Search Subject Menus Countries ... Z Acoustics Titles Descriptions Acoustic Thermometry of Ocean Climate: ATOC's Marine Mammal Research Program Acoustics and Vibration Animations Audio Engineering Society EEVL Database of Engineering Resources: Sound and Acoustical Technology ... WWW Virtual Library: Acoustics and Vibrations Comments: bubl@bubl.ac.uk Acoustic Thermometry of Ocean Climate: ATOC's Marine Mammal Research Program Details of the Marine Mammal Research Program (MMRP), which is designed to provide information on hearing capabilities of marine mammals and sea turtles, response of marine mammals and other marine organisms to man-made sounds (such as shipping noise), and to provide information needed to direct policies for long-term protection and conservation of marine species. Author: University of Cape Town Department of Oceanography Subjects: acoustics, mammals, marine science, whales DeweyClass: Resource type: document Acoustics and Vibration Animations Set of animations depicting various concepts concerning acoustics and vibration. Relevant to acoustics/sound elements of University courses. Author: Russell, Dan

48. BUBL LINK: Physics Links TIPTOP The Internet Pilot to physics WWW Virtual Library acoustics andVibrations Subjects particle physics, physics links, physics research http://bubl.ac.uk/link/p/physicslinks.htm

BUBL LINK Catalogue of Internet Resources Home Search Subject Menus Countries ... Z Physics links Titles Descriptions HEPIC: High Energy Physics Information Center Net Advance of Physics Particle - Surface Resources on the Internet Physics Around the World ... WWW Virtual Library: Acoustics and Vibrations Comments: bubl@bubl.ac.uk HEPIC: High Energy Physics Information Center Includes links to high-energy physics experiments, conferences, software, publications, virtual phone-book, newsgroups. Author: HEP Network Resource Center, Illinois Subjects: high-energy physics, physics links DeweyClass: Resource type: index Net Advance of Physics Review articles and physics tutorials in an encyclopaedic format. Author: Massachusetts Institute of Technology Subjects: particle physics, physical data, physics education, physics links, physics research DeweyClass: Resource type: guide, reference data Particle - Surface Resources on the Internet Provides access to mailing lists, databases, and home pages relevant to computational, experimental, or theoretical research on ion beam interactions with surfaces. Author: Shapiro, Mark H.

49. Yidaki/ Didjeridu/ Didgeridoo Acoustics Didjeridu acoustics, Yidaki acoustics. Music acoustics UNSW physics Ben Lange This page gives a nonspecialist introduction to the physics of the http://www.phys.unsw.edu.au/~jw/didjeridu.html

Acoustics of the yidaki (didjeridu or didgeridoo) This page gives a non-specialist introduction to the physics of the didgeridoo or didjeridu, known as yidaki or yiraki in the language of the Yolngu, one of the peoples of Northern Australia, where the instrument originated. It also answers some questions about our research on the instrument, which is described in a brief paper in the journal Nature . That paper also has a supporting web page , with sound files and spectra. What is a yidaki or didjeridu? How does the yidaki work? How can it make such a range of sounds? What are the key findings of our recent research? ... Further information and links What is a yidaki or didjeridu? The instrument is deceptively simple: it is just a wooden tube, about 1.2 to 1.5 m long, hollowed out by termites in the thin trunk of a eucalypt tree, and with a ring of beeswax around the mouthpiece for sealing and player's comfort. It is a very unusual instrument: although it usually plays only one note, it is capable of a spectacular range of different sounds, and the rhythmic variation of these sounds is its chief musical interest. The painting on the instrument can have considerable cultural significance. How does the yidaki work?

50. Physics! An introduction to some of the physics in speech Vocal tract acoustics (Aweb resource about our work in this area); Musical acoustics (A web http://www.phys.unsw.edu.au/PHYSICS_!/SPEECH_HELIUM/speech.html

Physics! Physics in Speech An introduction to some of the physics in speech (including some notes about helium speech) Content : Joe Wolfe This short document describes a simple model of the vocal tract and the production of voiced speech used in the production of some sustained phonemes - especially the vowels. It also includes some brief notes about helium speech. The voice makes sounds in (at least) two different ways. You can make a wide range of hissing or wind noises by passing air through a small aperture between the lips, teeth, etc. When you make such a sound using a small aperture between your 'vocal cords', it's called whispering. These sounds are all caused by the turbulent flow of the air, and they contain a wide range of different frequenies. A second way of making sound uses your 'vocal cords', which are technically called vocal folds, because they are more like folds of flesh than cords. These can vibrate at a frequency determined largely by the tension in the muscles that control them (high tension makes the frequency and therefore the pitch high) and by the mass of the tissue (post-pubescent males usually have larger folds and therefore deeper voices). The vibration releases pulses of air into the vocal tract.

51. Acoustics Home Page Physical and Mathematical Sciences physics and Astronomy acoustics ResearchGroup The acoustics program at Brigham Young University is one of the http://www.physics.byu.edu/research/acoustics/

BRIGHAM YOUNG UNIVERSITY Search BYU Acoustics Research Group Feedback BYU Home Physical and Mathematical Sciences Physics and Astronomy Acoustics Research Group General Resources Acoustics Home Program Facilities Faculty and Students Research ... ASA student chapter Member Resources Anechoic Chamber Schedule Acoustics Home The Acoustics program at Brigham Young University is one of the outstanding programs in Acoustics in the United States. We invite you to explore this site to learn about the exciting things that are happening here. Recent News Dr. Kent Gee arrives as visiting faculty member. Click here to learn about Dr. Gee's research BYU acquires a scanning laser doppler vibrometer (SLDV) for use in vibrations research BYU formed the student chapter of the Acoustical Society of America with weekly meetings on Thursdays at 11:00 in C261 of the Eyring Science Center. More information here Professional Societies Acoustical Society of America ASA Student Zone Audio Engineering Society Institute of Noise Control Engineering ... National Science Foundation General Info Campanella Associates Acoustics FAQ Active Noise Control FAQ Glossary of Dynamic Signal Analysis Terms Acoustical Testing Lab at NASA ... Music, Mind, and Machine Group at MIT

52. School Of Computing, Science & Engineering | University Of Salford - A Greater M acoustics, Audio and Video Computer Science, Multimedia and Telecommunications Then study physics with Pilot Studies at the University of Salford. http://www.cse.salford.ac.uk/

Skip to the content Help / Accessibility Statement Search in: salford.ac.uk www.cse.salford.ac.uk Search for: School of Computing, Science and Engineering Acoustics, Audio and Video Computer Science, Multimedia and Telecommunications Engineering Physics and Materials ... School You are in: Home Home Undergraduate programmes Postgraduate programmes Research ... Privacy statement News and Events MSc Transport Engineering and Planning Substantial Studentships and Bursaries now available More... Clearing Update A few places left – speak to an admissions tutor over the weekend! More... DTA PhD Studentship Research in Information Security More... MULTIPHYSICS Symposium Call for Papers More... Interested in Physics? Want to learn to fly? Then study Physics with Pilot Studies at the University of Salford. More... More news Welcome to the School of Computing, Science and Engineering In keeping with the ethos at Salford, many of our programmes have strong links with industry and we offer a range of opportunities for you to spend time on placements. The School also operates an Enterprise unit through which we are able to undertake commercial work with external partners on either a collaborative or consultancy basis. Our staff are actively engaged with leading edge and high quality research thus ensuring that the material we deliver to students is not only relevant today but also prepares you for tomorrow. We believe that our School of Computing, Science and Engineering is an exciting place in which to study and that our staff are friendly, well qualified and able to provide a supportive environment for students. Please spend a little time browsing through the various parts of our web site and then do get in touch to see what we can offer you.

53. Prof.Thomas Rossing: Acoustics Program physics 181. acoustics LABORATORY, 1, Text acoustics Laboratory Experiments by Text acoustics Laboratory Experiments by Rossing. physics 559, SPECIAL http://www.physics.niu.edu/trossweb/Acoustics_Program.html

A coustics Program At Northern Illinois University, acoustics courses are taught in the Departments of Physics, Communicative Disorders, and Mechanical Engineering. Supporting courses are offered in Electrical Engineering, Mathematics, and Music. On the undergraduate level, the Department of Physics offers a BS degree with an Acoustics emphasis. On the graduate level, the Department of Physics offers courses leading to the MS and PhD degrees with specialization in acoustics. Acoustics courses are described below; click this link to get to the general Physics course description page. Acoustics research is described on another webpage. Acoustics Courses Physics 180 ACOUSTICS, MUSIC, AND HEARING Elementary study of acoustics designed especially for students with an interest in music, speech and hear, the theatre, or sound recording. Topics of study include waves and vibrations, perception and measurement of sound, acoustics of musical instruments, speech and singing, and the acoustics of rooms. Text: Science of Sound by Rossing, Moore and Wheeler.

54. Northern Illinois University - Department Of Physics physics 181. acoustics LABORATORY, 1, Text acoustics Laboratory Experiments by physics 520, acoustics II, 3, Acoustic wave theory and applications, http://www.physics.niu.edu/trossweb/Acoustics_Program.shtml

Department of Physics Homepage General Information Research Academic Programs ... Sitemap A coustics Program At Northern Illinois University, acoustics courses are taught in the Departments of Physics, Communicative Disorders, and Mechanical Engineering. Supporting courses are offered in Electrical Engineering, Mathematics, and Music. On the undergraduate level, the Department of Physics offers a BS degree with an Acoustics emphasis. On the graduate level, the Department of Physics offers courses leading to the MS and PhD degrees with specialization in acoustics. Acoustics courses are described below; click this link to get to the general Physics course description page. Acoustics research is described on another webpage. Acoustics Courses Physics 180 ACOUSTICS, MUSIC, AND HEARING Elementary study of acoustics designed especially for students with an interest in music, speech and hear, the theatre, or sound recording. Topics of study include waves and vibrations, perception and measurement of sound, acoustics of musical instruments, speech and singing, and the acoustics of rooms. Text: Science of Sound by Rossing, Moore and Wheeler.

55. Physics Today March 2004- Acoustics Experiment Shows Why It's So Hard To Make Ou Acoustical physicists John Smith and Joe Wolfe, working with physics On theSydney musicacoustics group s Web site,3 one can listen to the gradual http://www.physicstoday.com/vol-57/iss-3/p23.html

document.writeln(AAMB7); Search advanced search Table of contents Past issues What is this? ... Virtual Journals Search and Discovery Acoustics Experiment Shows Why It's So Hard to Make Out the Heroine's Words at the Opera Vocal-tract resonances enhance the output of the vocal cords. They also create the distinctions between different vowels sounds. For sopranos singing high notes, the two functions come into conflict. A frustrated listener might well define grand opera as musical theater where you have a hard time making out the words even when they're being sung in your own language. Conceding the point, many opera houses nowadays always flash surtitles above the proscenium. Comprehension is particularly difficult in the higher reaches of the soprano register. Hector Berlioz long ago warned composers not to put crucial words in the soprano's mouth at high notes. A recent study at the University of New South Wales in Sydney, Australia, lays most of the blame on an inescapable tradeoff dictated by the physical acoustics of vowel differentiation and singing very high notes. Acoustical physicists John Smith and Joe Wolfe, working with physics undergraduate Elodie Joliveau, have carried out an experiment that demonstrates why different vowel sounds are almost impossible to distinguish when sopranos are singing in the highest octave of their range. The experimental subjects were eight professional operatic sopranos. Joliveau is herself a soprano, Wolfe is a composer and woodwind player, and Smith plays the double bass. The experimenters used equipment developed by Smith and Wolfe for the analysis of acoustic resonances in musical instruments and in the vocal tract during ordinary speech. The equipment is, in fact, designed to help adults master the sounds, especially the vowels, of a new language. It's also being applied to the correction of speech pathologies.

56. Physics Today October 2003-Issues And Events Applying physics and the Law Aerobics acoustics Can Harm Hearing US TeamGrabs Top Honors at physics Olympiad Letters http://www.physicstoday.com/vol-56/iss-10/p36a.html

document.writeln(AAMB7); Search advanced search Table of contents Past issues Links to advertisers ... Virtual Journals Issues and Events Aerobics Acoustics Can Harm Hearing Working out at a gym may improve your muscle tone, but both the staff and exercise participants could damage their ears from the loud music, says physicist Eugenie Mielczarek of George Mason University in Fairfax, Virginia. Over the past three years, Mielczarek measured sound levels in aerobics and other exercise classes at three fitness clubs in Fairfax County. At some clubs, sound levels reached 120 decibels, "close to that of using a jackhammer," she says. Loud music at fitness clubs may destroy your hearing, says physicist Eugenie Mielczarek (above). Regular exposure to loud music slowly destroys the delicate hair cells inside the ear, which reduces the volume and frequency of information transmitted to the brain. Since 1991, the American Council on Exercise (ACE) has published noise level guidelines for its members, but few instructors follow them. The guidelines, based on recommendations by the Occupational Safety and Health Administration, limit noise levels over an eight-hour period to under 85 dBthe equivalent of noise from heavy traffic. But some national fitness club chains hold 45-minute-long classes at 110 dB, says Mielczarek, and most instructors teach six to eight classes each day. "The club staff were either unaware that [ACE] guidelines existed or asked me to leave the class when I asked them to turn the sound down," she adds.

57. EMU Physics And Astronomy Acoustics Lab physics and Astronomy. acoustics Lab. The acoustics Laboratory houses an Eckels888.100 anechoic chamber, CDquality FFT, and time-delayed acoustic http://www.physics.emich.edu/alab/

Eastern Michigan University Physics and Astronomy Acoustics Lab The Acoustics Laboratory houses an Eckels 888.100 anechoic chamber, CD-quality FFT, and time-delayed acoustic spectroscopy instruments with associated microphones and amplifiers. Students, for example, can test the quality and characteristics of various loudspeakers or merits of a particular amplifier. Contact Dr. James Porter at (734) 487-8644 or by e-mail at phy_porter@online.emich.edu for additional information. Anechoic sound chamber

58. Exploratorium: Ten Cool Sites: Physics Music acoustics physics and music have been closely related for thousands ofyears. This site presents, in musician-friendly format, some of our research http://www.exploratorium.edu/learning_studio/cool/physics.html

Back to Ten Cool Sites About the Ten Cool Sites If you have an educational site you'd like to suggest, send it to tencool . Please put the word "cool" in the subject heading of your e-mail. Thanks to everyone who contributed this month. To print this page: E = mc Centenary Survey E = mc Cool Site: May/June 2005 The Atoms Family - The Miami Museum of Science uses a very spooky theme to teach about different forms of energy. Cool Site: March/April 2005 Music Acoustics - Physics and music have been closely related for thousands of years. This site presents, in musician-friendly format, some of our research work in music acoustics. From the Acoustics Laboratory at the University of New South Wales in Australia. Cool Site: March/April 2005 Physics Central - "We invite you to visit our site every week to find out how physics is part of your world. We'll answer your questions on how things work and keep you informed with daily updates on physics in the news. We'll describe the latest research and the people who are doing it and, if you want more, where to go on the Web." Brought to you by the American Physical Society.

59. Physics 36 / Music 36 Homepage physics 36 / Music 36 acoustics and Music. Duke University. Spring Semester, 2005.From this Web site you can. sign up for a term paper conference http://www.phy.duke.edu/~dtl/

Physics 36 / Music 36: Acoustics and Music Duke University Spring Semester, 2005 From this Web site you can: sign up for a term paper conference view the course meeting schedule and reading assignments obtain homework assignments read course handouts choose local live performances to attend (and perhaps report on) get follow-up materials after each class, including answers to assigned questions and problems and an opportunity for a longer look at some of the materials displayed in class (restricted access) download demonstration software to your PC (restricted access) browse among photographs of instruments from the Eddy collection (restricted access) find links to a variety of World Wide Web sites related to Acoustics and Music topics. elect to examine certain topics in more mathematical detail remind yourself how to contact the instructor answer questions " About the Course: Organizational Details " (restricted access) inspect the Faculty of Arts and Sciences course synopsis

60. Notes On Acoustics And Musical Instruments material on musical acoustics “Music physics ” (Pacific Science Center, Roederer, Juan G. Introduction to the physics and Psychophysics of Music . http://faculty.normandale.edu/~physics/Hollabaugh/1111/acoustics.htm

Normandale Community College Bloomington, Minnesota Dr. Mark Hollabaugh , Instructor Notes on Sound, Acoustics and Musical Instruments CONTENTS: Introduction to the Fundamentals of Sound Interference of sound waves Observing Sound Phenomena Human Factors and Sound ... Bibliography Note: To run the AVI file simulations, click on the simulation image to start and stop the motion. Introduction to the Fundamentals of Sound Key words: velocity, frequency, and wavelength, transverse and longitudinal waves, power and intensity. TYPES OF MECHANICAL WAVE MOTION Transverse waves cause medium displacements perpendicular to the direction of the propagation of the wave. Example: Wire vibrating under tension. Longitudinal waves cause medium displacements in the same direction as the propagation of the wave. Example: Vibrating column of air in a tube. Intensity is the power per unit area of a sound wave emanating from a point source and varies as the inverse square of the distance. The intensity is a function of the properties of the medium, the frequency of the sound, and the actual amplitudes of the molecular motions. Speed of propagation is dependent upon the nature of the material.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 3     41-60 of 113    Back | 1  | 2  | 3  | 4  | 5  | 6  | Next 20