Acoustical Society of America held 159th meeting on on noise and noise control at Baltimore Marriott Waterfront Hotel in Baltimore, MD on April 19-23, 2010. Lister below are just a few of the meeting’s many interesting noise-related talks. 1) Aviation Engineering: STIFLING THE SONIC BOOM 2) City Noise: IDENTIFYING THE SOUNDS OF CRISIS 3) Human […]
Acoustical Society of America held 159th meeting on on noise and noise control at Baltimore Marriott Waterfront Hotel in Baltimore, MD on April 19-23, 2010. Lister below are just a few of
the meeting’s many interesting noise-related talks.
1) Aviation Engineering: STIFLING THE SONIC BOOM
2) City Noise: IDENTIFYING THE SOUNDS OF CRISIS
3) Human Noises: SOUND LEVELS IN THE ARCTIC OCEAN
4) Community Noise Mitigation: PUBLIC OUTREACH WORKSHOP
5) Noise Inside a Car: QUIET CONCRETE ROADS
6) Construction Noise: “NO RACKET” JACKET FOR JACK HAMMER
7) Signal Processing: NOISE FILTERING FOR THE HEARING IMPAIRED
8) Noise in Healthcare Settings: NEW LEGAL STANDARDS
9) More Highlights — OTHER INTERESTING SESSIONS
10) More Information for Journalists
1) Aviation Engineering: Stifling the Sonic Boom SONIC “PUFF” TECHNOLOGY MAY
SPEED SUPERSONIC FLIGHT OVER LAND
For the last 40 years, commercial aviation has hit a speed barrier in
regulations prohibiting supersonic flight over land. These aim to limit the
negative impact of loud sonic booms on populated areas, and current
regulations permit commercial supersonic flight only over oceans,
significantly limiting the speed benefit from supersonic flight. New
aircraft configurations are emerging that are shaped to minimize the shock
waves associated with sonic booms and may allow supersonic speed over land.
Talk #1aNCa1, “Sonic boom: From bang to puff” is at 8:05 a.m. on Monday,
April 19. Abstract:
2) City Noise: Identifying the Sounds of Crisis ACOUSTIC AND SEISMIC SENSORS
IN BALTIMORE HELP SORT COMPLEX CITY SOUNDS
Beeping, shouting, construction, the sounds of tires on roads, and other
loud noises — all partly masked by mazes of tall buildings — make up the
fabric of the modern urban soundscape. To urban sound sleuths such as Donald
G. Albert, a scientist with the Engineer Research and Development Center
(ERDC) Cold Regions Research and Engineering Laboratory, in Hanover, NH,
this complex soundscape is a challenge. He is tasked with developing a way
to use sensors to sort out the complex bounce of signals, noise, scattered
sounds, echoes, and vibrations in urban environments.
Talk #1pNSc1, “Urban acoustic and seismic noise measurements in Baltimore”
is at 1:30 p.m. on Monday, April 19. Abstract:
3) Human Noises in the Arctic
LOSS OF POLAR ICE INCREASES BOAT TRAFFIC AND SOUND LEVELS IN ARCTIC OCEAN
With the melting of polar ice, never before in modern life has so much open
ocean water been accessible in the Arctic. And where there’s water, there is
opportunity for commercial shipping, and where shipping lanes emerge, big
— and big noise — may follow.
Talk #1aAO1, “The accessible Arctic Ocean” is at 9:05 a.m. on Monday, April
4) Community Noise Mitigation: Public Outreach Workshop NOISE HAS A PROFOUND
LOCAL IMPACT — EVEN IF FEDERAL POLICY DOES NOT
Community noise is a major social problem that generally decreases the
quality of life for many people in the United States, and it is continuing
to grow — especially in major urban areas. In cities like Baltimore,
community noise causes a variety of problems for local residents — from
simple annoyances to profound negative impacts on human health.
The workshop will include a panel of prominent national speakers on
community noise control who will make presentations on a variety of topics
faced by residents of Baltimore, including the noise situation in Baltimore,
desired local government responses, the Baltimore noise ordinance, the
Maryland noise control regulation, and the role of federal, state and local
governments in addressing community noise issues. The Workshop will also
give the first brief overview of a forthcoming National Academy of
Engineering study titled “Technology for a Quieter America,” which will be
published later this year.
5) Noise Inside a Car
QUIET CONCRETE PAVEMENT IS KEY TO MORE QUIET RIDE
The stereo test tells all: You’re in the driver’s seat, buckled in, mirrors
adjusted, traffic checked, in gear. Rolling. Cue the sound system, crank the
volume, and crank it again. And then crank it again. This simple diagnostic
revealing: If you have to keep turning your stereo up as you drive to hear
the music, you likely have “noisy pavement” under your tires.
April 19. Abstract:
6) Construction Noise
QUIETING THE SOUNDS OF PROGRESS — THE “NO-RACKET JACKET”
New York City is constantly maintaining, repairing, and reinventing itself,
ongoing work that creates a lot of construction noise. However, a
collaborative team including the New York City Department of Environmental
Protection (DEP), consultants, utilities and an equipment vendor are working
together to quiet the sounds of progress and improve the quality of life for
those who live and work in the city. In furthering the city’s commitment to
reducing noise is embodied in a new noise code and new construction rules,
the DEP team wanted to look at ways to eliminate jackhammer noise — an
annoyance for residents and businesses and an important occupational hazard
for construction workers.
Talk #2pNCa9, “Proactive regulation engenders creative innovation: Quieting
the jack hammer” is at 3:00 p.m. on Tuesday, April 20. Abstract:
7) Signal Processing: Noise Filtering for the Hearing Impaired A SOLUTION
FOR IMPROVING SPEECH INTELLIGIBILITY FOR THE HEARING IMPAIRED
Recall what it is like trying to focus on a conversation in a crowded and
noisy bar — and then imagine having to do this even in a relatively quiet
room. This is exactly the challenge that faces many people who rely on
hearing aids or have cochlear implants. While these technological advances
make it possible for many to hear who would not otherwise, they do not allow
the individual to filter out background noise.
Talk #2aSC1, “Noise-suppression algorithms for improved speech
intelligibility by normal-hearing and cochlear implant listeners” is at 8:05
a.m. on Tuesday, April 20. Abstract:
8) Noise in Healthcare Settings
NEW ACOUSTICAL STANDARDS PRESENT BOTH CHALLENGES AND OPPORTUNITIES
A pair of new documents on healthcare acoustics, which have just been
released after five years of peer review and public comment, are described
by one of their authors as both a carrot and a stick. They set measurable
minimum acoustical standards for the health care industry, and because these
new standards have already been adopted by the Leadership in Energy and
Environmental Design (LEED) Green Building Rating system, they are the basis
for two new Environmental Quality credits. Because of Health Insurance and
Portability Act (HIPAA) rules and new conditions imposed last November by
Obama’s ARRA HITECH Act, there are serious fines (up to $1.5 million) for
Talk #2aNSc11, “Strengthening the healthcare guidelines: About the new
online research community” is at 11:40 a.m. on Tuesday, April 20. Abstract:
Talk #2pAAa1, “Speech privacy: The new 2010 architectural guidelines” is at
1:00 p.m. on Tuesday, April 20. Abstract:
9) MORE HIGHLIGHTS — OTHER INTERESTING SESSIONS ON NOISE In addition to the
highlighted talks above, there are many other interesting noise-related
talks and sessions at the meeting — some of which are listed below. For a
complete list of abstracts for any of these sessions, go to the searchable
index for the 159th Meeting (http://asa.aip.org/asasearch.html
) and enter
the session number with asterisk (e.g., 1aNSa*).
Classic Acoustics and Sonar books for from Peninsula Publishing Los Altos Hills, California USA Many of these texts were written by current or retired ATIcourse instructors and several of the textbooks are given out free as part of the ATI sponsored short course on the subject. June 2009 Principles of Underwater Sound, Third edition. Robert […]
Classic Acoustics and Sonar books for from Peninsula Publishing Los Altos Hills, California USA
Many of these texts were written by current or retired ATIcourse instructors and several of the textbooks are given out free as part of the ATI sponsored short course on the subject.
Principles of Underwater Sound, Third edition. Robert J. Urick. The most widely used book on underwater acoustics and sonar published today. This book continues to be the standby of practicing engineers, scientists, underwater systems managers and students. Its contents lie squarely in the middle between theory at one end and practical technology at the other. Principles summarizes fundamentals, effects and phenomena of underwater sound and their application to sonar. It provides numerical, quantitative data for the solution of practical problems. 229 figures; 23 tables; 673 references. Detailed index pinpoints data and explanations instantly. Problem section with solutions.
Hardcover. 444 pages. ISBN: 9780932146625
Mechanics of Underwater Noise. Donald Ross. Most authoritative book on fundamentals of underwater noise radiated by ships, submarines, torpedoes. Stresses physical explanations of mechanisms by which noise is generated, transmitted by structures and radiated into the sea.
Hardcover. 375 pages. ISBN: 9780932146168
Sediment Acoustics. Robert D. Stoll. Seminal book addressing Biot Theory for the modeling of acoustic behavior of ocean sediments. Written for seismic-acousticians in the geo-exploration, engineering, oceanographic and underwater sound communities. Stoll, a respected leader in marine geoacoustics for more than forty years, added a brief preface and updated selected bibliography to this second printing of his book, first published in 1989. Sediment Acoustics provides an excellent introduction to Biot Theory, the physics underlying the model parameters, and experimentally measurable predictions of the theory. The book constitutes a major synthesis for non-specialists: the results of laboratory, in-situ and numerical modeling studies of seismic-acoustic wave propagation, reflection and attenuation in two-phase poro-visco-elastic media. Includes tutorial sections and references for new researchers in seismic modeling, quantitative seismic stratigraphy, offshore marine geotechnique, underwater acoustics and sonar, and ground-interacting aeroacoustics.
Softcover. 172 pages. ISBN: 9780932146144
Underwater Electroacoustic Transducers. Dennis Stansfield. This reprint is a practical handbook for users and designers of underwater transducers. It has been an authoritative text in the field since first published by the Bath University Press in 1991. Design methods are illustrated by concentrating on the design of piezoelectric transducers in the 2 – 20 kHz range, most commonly used in sonar systems. Designs for frequencies below this range are also discussed. Treatment is down-to-earth and avoids complex mathematics. Topics include the role of the transducer as an element of the complete system; wide bandwidth, high power transmitter applications; wide band hydrophones; characteristics of piezoelectric and magnetostrictive materials; and transducer testing. For the user, the wide range of topics and practical approach of the book help him to identify the most important features of the requirement and assist him in drawing up realistic specifications. For the designer, the book describes the necessary theoretical and practical aspects involved in developing a transducer to most effectively suit the application and it discusses the main features of the various types of designs.
Softcover. 429 pages. ISBN: 9780932146724
Introduction to the Theory and Design of Sonar Transducers. Oscar Bryan Wilson. Written in 1985 as a text at the Naval Postgraduate School, this book provides a complete treatment of the fundamentals of transducer theory and design using equivalent circuit techniques. Subjects addressed: introductory baseline and definitions, equivalent circuits, properties of materials: piezoelectric and magnetorestrictive, hydrophone design and transducer arrays.
Hardcover. 202 pages. ISBN: 9780932146229
Underwater Electroacoustic Measurements. Robert J. Bobber. Theory and practice of measuring electroacoustic parameters such as response, sensitivity, directivity, impedance, efficiency, linearity and noise limits of transducers used in sonars.
Hardcover. 341 pages. ISBN: 9780932146199
Matched Field Processing for Underwater Acoustics. Alexandra Tolstoy. Published by the World Scientific Publishing Company in 1993. The author was with the Naval Research Laboratory. Matched Field Processing is the process of cross-correlation of a measured field with a modeled, predicted or replica field to determine a set of input parameters that yield the highest correlation. Typically, input parameters in to a selected sound propagation model would include candidate range, bearing and depth of a source relative to the receiving array. The sound propagation model might be defined by environmental data such as sound speed profiles, bottom and surface conditions, tides, and composition of the water. The matched field processing (MFP) would be employed to determine the location of the source – the exact relative range, bearing and depth of the source. This book is for scientists and engineers who are familiarizing themselves with MFP and those in need of detailed information about the process. The first two chapters address a brief history of MFP and discuss other types of processors used in underwater acoustics. The third chapter discusses where errors in MFP solutions occur due to errors in the propagation model. Chapter 4 gives the reader a familiarity of how linear and minimum variance processors perform under a wide range of conditions. And the last chapter addresses broadband processing, source movement, and multiple sources.
Hardcover. 228 pages. ISBN: 9789810210595
Space-Time Information Processing. Charles Loda and A. Winder. Classic reference for signal processing and data analysis for acoustic and sonar engineering. Features Fourier transforms, statistical analyses, spectra and correlation. Valuable chapters address spatially and temporally limited functions, optimal filtering procedures, and interpretation of results.
Hardcover. 192 pages. ISBN: 9780932146045
Transducers and Arrays for Underwater Sound. Charles H. Sherman and John Butler. This book is published by Springer, released in 2007, and sold by Peninsula Publishing. This is the most recent and complete book on the theory and design of underwater transducers in print today. Sponsored by the Office of Naval Research of the U. S. Navy. This book addresses the theory, development and design of electroacoustic transducers for underwater applications. It is more comprehensive than any existing book in this field. It includes the basics of the six major types of electroacoustic transducers and shows why piezoelectric ceramic transducers are the most suitable for underwater sound. It presents the basic acoustic concepts and models needed in transducer and transducer array development, and discusses most currently used transducer designs. It analyzes nonlinear effects and describes methods of transducer evaluation and measurement. The extensive Appendix and numerous diagrams provide an up to date source for use by students and practicing engineers and scientists.
Hardcover. 630 pages. ISBN: 9780387329406
Underwater Acoustic System Analysis, Second Edition. William S. Burdic. Provides a comprehensive exploration of underwater acoustics, acoustic signal generation, and acoustic signal processing for systems analysts, systems engineers and sonar engineers. This book is a reprint of the second edition published in 1991 and is still a classic text in the field. Updated and expanded in 1991, this edition contains all the valuable information it its earlier text plus a detailed discussion of adaptive processing as applied to spatial filtering. You will also find review sections on Fourier analysis, correlation, random processes and hypothesis testing. Highlights include: generation and propagation of compressional acoustic waves in the ocean; narrow band signatures of surface ships caused by cavitating propeller blades and diesel engine firing; optimization of signal-to-noise ratio and spatial resolution in the presence of multiple signals; ambient noise in the ocean; and examples of system performance.
Softcover. 489 pages. ISBN: 9780932146632
Sonar Engineering Handbook. Harrison T. Loeser. Fundamentals and
engineering formulas dealing with sonar, signal processing, sound transmission, noise generation, vibration control and elastomers. Each formula is briefly explained in an associated paragraph with references provided for detailed follow up.
Softcover. 216 pages. ISBN: 9780932146595
Ambient Noise in the Sea. Robert J. Urick. Examines significant aspects of ambient noise beneath sea’s surface: definition; measurement; sources; variation. Essential for work in sonar systems.
Hardcover. 205 pages. ISBN: 9780932146137
Sound Propagation in the Sea. Robert J. Urick. Overviews underwater sound propagation, multipath, deep sound channel, sea surface reflections scattering, attenuation, absorption, modeling.
Hardcover. 225 pages. ISBN: 9780932146083
Physics of Sound in the Sea. Milestone work on undersea sound propagation resulting from the World War II studies. Discusses transmission loss, target strength and echoes from subs/surface ships, sound transmission through wakes, etc.
Hardcover. 577 pages. ISBN: 9780932146244
Side Scan Sonar Record Interpretation. Charles Mazel. Training manual produced by Klein Associates, Inc., manufacturer of side scan sonars. Applies to interpretation of all commercial side scan sonars. The 144 figures and photographs of actual sonar records depict mine and ship targets, shadows, clutter, noise, wakes and dolphins.
Softcover. 146 pages. ISBN: 9780932146502
Noise Reduction. Edited by Leo L. Beranek. Classic book of fundamentals of noise control and noise reduction for the general engineer. Elementary beginnings leading to the advanced aspects of noise reduction for offices, residences, auditoriums and transportation vehicles. Case histories and abundant references.
Hardcover. 776 pages. ISBN: 9780932146588
Collected Papers on Acoustics. Wallace Clement Sabine, the Father of Architectural Acoustics. Acoustic problems in theater, auditorium, church, classrooms and their solutions. Magnificent sketches and photos. This unabridged volume forms the foundation of modern architectural acoustics.
Hardcover. 304 pages. ISBN: 9780932146601
Signal Detection and Recognition by Human Observers. Edited by John A. Swets in 1964, this book was the first to bring together into one volume a broad discussion coverage of modern signal detection theory applications to human performance, specifically in auditory and visual sensory tasks. Applications address problems in psychology including the integration of sensory information, signal uncertainty, auditory frequency analysis, speech communication, vigilance and recognition memory. Bibliography updated to 1988.
Hardcover. 734 pages. ISBN: 9780932146212
Signal Detection Theory and Psychophysics. David Green and John Swets. Summarizes the application of signal detection theory to the analysis and measurement of the human observer’s sensory system. Outlines the theory of statistical decision making and its application to a variety of common psychophysical activities. Applies signal detection theory to problems in a sensory psychology.
Hardcover. 521 pages. ISBN: 9780932146236
Applied Acoustics. G. Porges. Develops the basic theory of sound from first principles and applies the theory to obtain practical formula for the transmission and absorption of sound, sound levels in closed spaces and the radiation of sound from common noise sources. In keeping with the practical orientation of the book, the mathematics used is relatively elementary.
Hardcover. 190 pages. ISBN: 9780932146182
The Sabines at Riverbank. John Kopec. Chronicles the people and research involved in the birth and first decades of the science of architectural acoustics. Here is the history of the first family of architectural acoustics, the Sabines, and the Riverbank Acoustical Laboratories, the world’s first independent laboratory for measuring the acoustical properties of architectural materials. The story begins in the early 1900s with Wallace Clement Sabine, a Harvard professor, who led the practice of acoustics toward a quantitative science with great insight, industry and integrity. He was followed by two other giants in the field of architectural acoustics: Paul Earls Sabine, a cousin, and his son, Hale Johnson Sabine, all Harvard graduates. No one other than John Kopec with his historical perspective and inside knowledge of the lab could have authored this extraordinary history.
Hardcover. 230 pages. ISBN: 9780932146618
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ATIcourses teaches short courses in underwater sound, sonar and acoustics. See our schedule for our technical training seminars at ATI Training Courses Here are some acoustic and underwater sound conferences that we include as a service to our readers. June 22-26, 2009 – Third International Conference And Exhibition On Underwater Acoustic Measurements: Technology And Results, […]
ATIcourses teaches short courses in underwater sound, sonar and acoustics. See our schedule for our technical training seminars at ATI Training Courses Here are some acoustic and underwater sound conferences that we include as a service to our readers.
June 22-26, 2009 – Third International Conference And Exhibition On Underwater Acoustic Measurements: Technology And Results, Nafplion, Greece, http://www.uam2009.gr
August 20-22, 2009 – Active 2009, International Symposium on Active Control of Sound and Vibration, Ottawa, Canada, http://www.internoise2009.com/active09/
August 23-26, 2009 – Inter-Noise 2009, 38th International Congress and Exposition on Noise Control Engineering, Ottawa, Canada, http://www.internoise2009.com/
October 26-28, 2009 – EuroNoise 2009, Action on Noise in Europe, Edinburgh, Scotland, http://www.euronoise2009.org.uk/
October 26-30, 2009 – 158th Meeting of the Acoustical Society of America, San Antonio, Texas, http://asa.aip.org/sanantonio/sanantonio.html
April 19-23, 2010 – Joint Meeting Acoustical Society of America and Institute of Noise Control Engineering, Baltimore, Maryland, http://www.acosoc.org/RegChapters/WashDC/ASA159brochure.pdf
UK & Canada. Kongsberg Mesotech introduces new sonar products at Ocean Business Tuesday, 31 March 2009 Two new sonar products from Kongsberg Maritime’s specialist sonar division, Kongsberg Mesotech Ltd will be on display at Ocean Business 09. The 1171 Series is a complete range of multi-frequency, fast scanning obstacle avoidance imaging and profiling sonars offering […]
UK & Canada. Kongsberg Mesotech introduces new sonar products at Ocean Business
Tuesday, 31 March 2009
Two new sonar products from Kongsberg Maritime’s specialist sonar division, Kongsberg Mesotech Ltd will be on display at Ocean Business 09. The 1171 Series is a complete range of multi-frequency, fast scanning obstacle avoidance imaging and profiling sonars offering unrivalled resolution, from an industry leader in sonar technology.
The 1171 Series of sonar heads has been developed to meet the requirements for both shallow and deep ocean applications. As well as the choice of operating frequencies, the new sonar heads feature faster scanning rates, improved range resolution and even clearer, sharper images, all in a more compact lighter housing.
1171 Series – Obstacle Avoidance Imaging Sonar Heads:
The dual transducer design allows optimised operational configuration for both long range obstacle avoidance and shorter range imaging detail. The transducer is protected within an oil-filled, pressure compensating dome. The telemetry is RS485 and RS232 compatible and is automatically sensed and configured at start up to match the telemetry link used. The sonar head operation is configured and controlled using the MS1000 Software Processor. Other features include:
-Dual transducers for multi purpose obstacle avoidance and inspection use.
-Multiple frequency capability (330 to 400 kHz and 450 to 700 kHz).
-Improved range and scanning rate.
-Improved sampling resolution & beam foot print resulting in clearer, sharper images.
-Improved Range Resolution.
-Lighter 4000m depth rated design.
-Optional Ethernet telemetry interface.
1171 Series – Multi Frequency Profiling Heads:
The Multi-Frequency design allows optimising of the profiling configuration for different applications. Like the sonar head, the transducer is protected within an oil-filled, pressure compensating dome and the telemetry is automatically sensed and configured at start up to match the telemetry link used. The sonar head operation is also configured and controlled using the MS1000 Software Processor.
-Multiple frequency capability (675kHz to 1.35 mHz).
-Improved range and scanning rate.
-Clearer, sharper images and a >0.5 cm range resolution.
-Sample resolution of > 0.5mm.
-Lighter 4000m depth rated design.
-Optional Ethernet telemetry interface.
Kongsberg Mesotech Ltd. is the Canadian subsidiary of Kongsberg Maritime. Today the company supplies a worldwide customer base with a range of products for military, fisheries, oilfield, scientific, and other offshore market applications.
Kongsberg Mesotech’s strength lies in its unique engineering capabilities. Ongoing research and development has ensured the company’s position as a world-leader in high-resolution sonar systems, and acoustic technology. Kongsberg Mesotech manufactures over 100 models of multibeam, scanning, echo sounder, and altimeter sonar combinations.