DOCSLIB.ORG

Casella Noise Glossary

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Casella Noise Glossary CASELLA USA WHAT IS …? GLOSSARY OF ACOUSTIC TOPICS What is…..? A brief guide to some of the more common terms and concepts used in industrial and environmental acoustics and the noise instruments used for measurements. CEL-240 CEL-320/360 CEL-350 CEL-430/450 CEL-600 The CEL family of Quality Noise meters From Casella USA These pages are intended to provide a simplified explanation to some of the more common (and not so common) terms that a new user of sound level meters or noise dosimeters might encounter when using CEL noise instruments for the first time. This text is not intended to be exhaustive. For strict definitions of the terms found in this document the user is directed to relevant ANSI, ASTM, ISO & IEC texts. Written by Bob Selwyn V.P Sales and Marketing, Casella USA Originally Started Saturday, November 03, 2001 Lastupdated Friday,February12,2010 Casella USA Page 1 of 34 (800) 366-2966 [email protected] last updated 02/12/2010 CASELLA USA WHAT IS …? GLOSSARY OF ACOUSTIC TOPICS Contents ‘A’ weighting.......................................................................................................................... 8 Absorption............................................................................................................................... 8 Absorption coefficient ............................................................................................................ 8 Accuracy ................................................................................................................................. 8 A.C.G.I.H................................................................................................................................ 8 Acoustics................................................................................................................................. 8 Acoustic trauma ...................................................................................................................... 8 Airborne sound........................................................................................................................ 8 Ambient noise ......................................................................................................................... 8 Amplitude ............................................................................................................................... 8 Analog display ........................................................................................................................ 9 Anechoic chamber .................................................................................................................. 9 A.N.S.I. ................................................................................................................................... 9 Articulation index (AI) ........................................................................................................... 9 ASHRAE................................................................................................................................. 9 A.S.T.M. ................................................................................................................................. 9 Attenuation.............................................................................................................................. 9 Audio frequency...................................................................................................................... 9 Audiogram .............................................................................................................................. 9 Audiometer ............................................................................................................................. 9 Average noise level (Lavg)..................................................................................................... 9 ‘B’ weighting ........................................................................................................................ 10 Back erase ............................................................................................................................. 10 Background noise level (dB) ................................................................................................ 10 Band ...................................................................................................................................... 10 Band pass filter ..................................................................................................................... 10 Barrier ................................................................................................................................... 10 Baseline audiogram............................................................................................................... 10 Broadband noise.................................................................................................................... 10 Broadband noise level (dB) .................................................................................................. 10 Building acoustics................................................................................................................. 10 ‘C’ weighting ........................................................................................................................ 10 Calibration............................................................................................................................. 10 Calibrator .............................................................................................................................. 11 Ceiling level.......................................................................................................................... 11 Chart recorder ....................................................................................................................... 11 Cochlea ................................................................................................................................. 11 Community noise equivalent level (CNEL) ......................................................................... 11 Constant bandwidth filter...................................................................................................... 11 Constant percentage bandwidth filter ................................................................................... 11 Crest factor (CF) ................................................................................................................... 11 Criterion level (dB)............................................................................................................... 11 Cumulative............................................................................................................................ 11 Casella USA Page 2 of 34 (800) 366-2966 [email protected] last updated 02/12/2010 CASELLA USA WHAT IS …? GLOSSARY OF ACOUSTIC TOPICS Cumulative distribution (%) ................................................................................................. 12 Cumulative distribution level (dB) ....................................................................................... 12 Cutoff frequency ................................................................................................................... 12 Cutoff level (dB)................................................................................................................... 12 Cycle ..................................................................................................................................... 12 Cycles per second (cps) ........................................................................................................ 12 Daily personal noise exposure level (LEP,d)........................................................................ 12 Damping................................................................................................................................ 12 Data logging.......................................................................................................................... 12 Day Night Noise Level (LDN) ............................................................................................. 13 Derate.................................................................................................................................... 13 Digital audio tape (DAT)...................................................................................................... 13 dB.......................................................................................................................................... 13 Decibel (dB).......................................................................................................................... 13 Digital signal processing (DSP)............................................................................................ 13 Diffraction............................................................................................................................. 13 Directivity ............................................................................................................................. 13 Directivity index (DI) ........................................................................................................... 13 D.o.D..................................................................................................................................... 13 Doppler effect
Load more

Recommended publications
  • Hearing Loss Prevention, Chapter 296-817
    Chapter 296-817 WAC Introduction Hearing Loss Prevention (Noise) _________________________________________________________________________________________________________ Chapter 296-817 WAC Hearing Loss Prevention (Noise) (Form Number 414-117-000) This book contains rules for Safety Standards for hearing loss prevention (Noise), as adopted under the Washington Industrial Safety and Health Act of 1973 (Chapter 49.17 RCW). The rules in this book are effective December 2015. A brief promulgation history, set within brackets at the end of this chapter, gives statutory authority, administrative order of promulgation, and date of adoption of filing. TO RECEIVE E-MAIL UPDATES: Sign up at https://public.govdelivery.com/accounts/WADLI/subscriber/new?topic_id=WADLI_19 TO PRINT YOUR OWN PAPER COPY OR TO VIEW THE RULE ONLINE: Go to https://www.lni.wa.gov/safety-health/safety-rules/rules-by-chapter/?chapter=817/ DOSH CONTACT INFORMATION: Physical address: 7273 Linderson Way Tumwater, WA 98501-5414 (Located off I-5 Exit 101 south of Tumwater.) Mailing address: DOSH Standards and Information PO Box 44810 Olympia, WA 98504-4810 Telephone: 1-800-423-7233 For all L&I Contact information, visit https://www.lni.wa.gov/agency/contact/ Also available on the L&I Safety & Health website: DOSH Core Rules Other General Workplace Safety & Health Rules Industry and Task-Specific Rules Proposed Rules and Hearings Newly Adopted Rules and New Rule Information DOSH Directives (DD’s) See http://www.lni.wa.gov/Safety-Health/ Chapter 296-817 WAC Table of Contents Hearing Loss Prevention (Noise) _________________________________________________________________________________________________________ Chapter 296-817 WAC Safety Standards for Hearing Loss Prevention (Noise) WAC Page WAC 296-817-099 Noise definitions.
    [Show full text]
  • Occupational Noise Measurement
    Occupational Noise Measurement Occupational hearing loss is damage to the inner ear from noise or vibrations due to certain types of jobs or entertainment. Occupational hearing loss is a form of acoustic trauma caused by exposure to vibration or sound. Sound is heard as the ear converts vibration from sound waves into impulses in the nerves of the ear. Sounds above 90 decibels (dB, a measurement of the loudness or strength of sound vibration) may cause vibration intense enough to damage the inner ear, especially if the sound continues for a long time. Did you know that occupational hearing loss was an ergonomic type injury? The reason being that if is a cumulative trauma which translates to exposures over time. In order to control and prevent occupational deafness you must be able to measure the exposures. 90 dB -- a large truck 5 yards away (motorcycles, snowmobiles, and similar engines range from 85 - 90 dB) 100 dB -- some rock concerts 120 dB -- a jackhammer about 3 feet away 130 dB -- a jet engine from 100 feet away A general rule of thumb is that if you need to shout to be heard, the sound is in the range that can damage hearing. Some jobs carry a high risk for hearing loss, such as: Airline ground maintenance Construction Farming Jobs involving loud music or machinery Oil rigs Refineries Measuring noise levels and workers' noise exposures is the most important part of a workplace hearing conservation and noise control program. It helps identify work locations where there are noise problems, employees who may be affected, and where additional noise measurements need to be made.
    [Show full text]
  • Spark® 704 Noise Dosimeter Technical Reference Manual Larson Davis Spark® 704 Personal Noise Dosimeter
    Spark® 704 Noise Dosimeter Technical Reference Manual Larson Davis Spark® 704 Personal Noise Dosimeter Technical Reference Manual I704.01 Rev E Copyright Copyright 2006, 2007, 2008 and 2009 by PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved. The manual may not be copied in whole or in part for any use without prior written consent of PCB Piezotronics, Inc. Disclaimer The following paragraph does not apply in any state or country where such statements are not agreeable with local law: Even though PCB Piezotronics, Inc. has reviewed its documentation, PCB Piezotronics, Inc. makes no warranty or representation, either expressed or implied, with respect to this instrument and documentation, its quality, performance, merchantability, or fitness for a particular purpose. This documentation is subject to change without notice, and should not be construed as a commitment or representation by PCB Piezotronics, Inc. This publication may contain inaccuracies or typographical errors. PCB Piezotronics, Inc. will periodically update the material for inclusion in new editions. Changes and improvements to the information described in this manual may be made at any time. Record of Serial Number and Purchase Date Serial Number: ___________ Purchase Date: ___________ Recycling PCB Piezotronics, Inc. is an environmentally friendly organization and encourages our customers to be environmentally conscious. When this product reaches its end of life, please recycle the product through a local recycling center or return the product
    [Show full text]
  • 7 Strategies for Noise Surveys
    7 STRATEGIES FOR NOISE SURVEYS Mr H. Lester* Professor J. Malchaire Unité Hygiène et Physiologie du travail Health and Safety Executive, UK Université catholique de Louvain (UCL Clos Chapelle-aux-Champs 3038 B-1200 Bruxelles BELGIUM [email protected] Mr H.S. Arbey and Mr Thiery Institut National de Recherche et de Securité Avenue de Bourgogne, B.P. No 27 F-54501 Vandoeuvre Cedex FRANCE [email protected] [email protected] 7.1. INTRODUCTION 7.1.1. Definitions Linst designates the instantaneous level indicated by a simple sound level meter set on FAST or SLOW as far as the averaging time is concerned. In recent times the Linst parameter has been. replaced by the A-weighted equivalent level LAeq,T. This is the continuous level which, over a given period of time, T, would give the same amount of acoustical energy as the actual noise. This is the so called ISO equal energy principle. As mentioned in chapter 4, this is different from the so called OSHA principle (USA) according to which an exposure of duration T at a noise level L dB(A) is equivalent to an exposure of duration 2 T at a noise level (L-5) dB(A) (according to the ISO principle, it is equivalent to (L-3) dB(A) during 2 T). Over a given period of time, personal dosimeters (personal sound exposure meters) offer usually the possibility of recording all or some of the following parameters: Lx% the noise level (in dB(A)) exceeded during x% of the time; LMAX the highest level (in dB(A)) exceeded during that period of time (in SLOW and FAST, depending upon the setting of the instrument); Lpeak the highest peak level (in dB).
    [Show full text]
  • A Pilot Study of Occupational Noise Exposures Among Selected Csusm Employees
    Running head: OCCUPATIONAL NOISE EXPOSURE PILOT STUDY AT CSUSM CALIFORNIA STATE UNIVERSITY SAN MARCOS THESIS SIGNATURE PAGE THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE MASTER OF PUBLIC HEALTH IN HEALTH PROMOTION AND EDUCATION THESIS TITLE: A PILOT STUDY OF OCCUPATIONAL NOISE EXPOSURES AMONG SELECTED CSUSM EMPLOYEES AUTHOR: SIAMAK DOROODI DATE OF SUCCESSFUL DEFENSE: NOVEMBER 29, 2017 THE THESIS HAS BEEN ACCEPTED BY THE THESIS COMMITTEE IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF PUBLIC HEALTB IN HEALTH PROMOTION AND EDUCATION Emmanuel Iyiegbuniwe, Ph.D. ~"'~:i~:..a_ 11/ 2-1/ r7-- THESIS COMMITTEE CHAIR sIGNATURE DATE Christina Holub, Ph.D. lf {;)_9(l1- THESIS COMMITTEE MEMBER DATE Kristine Diekman, M.F.A 11/dJ1!1r THESIS COMMITTEE MEMBER SIGNATURE ~ Running head: OCCUPATIONAL NOISE EXPOSURE PILOT STUDY AT CSUSM A PILOT STUDY OF OCCUPATIONAL NOISE EXPOSURES AMONG SELECTED CSUSM EMPLOYEES Siamak Doroodi California State University San Marcos OCCUPATIONAL NOISE EXPOSURE PILOT STUDY AT CSUSM 2 Abstract We conducted a pilot study on personal noise exposure assessments for seventeen employees at California State University San Marcos (CSUSM) during August and September of 2017. Noise exposures were measured using calibrated dosimeters with data-logging capabilities to document average sound level (LAVG), eight-hour time weighted average sound level (LTWA), peak noise level (LCPK), and the Dose. In addition, all participants completed survey questionnaires inquiring about their use of personal protective equipment (hearing protection), knowledge of the Occupational Safety and Health Administration (OSHA) PPE standards, and attitudes towards requirements for PPE. The results of this pilot study showed that LAVG ranged from 47.5 to 73.9 dBA (Dose = 0.1-9.7%) and the highest LCPK was found to be 140.6 dBA.
    [Show full text]
  • Casella Dbadge2is User Manual
    Including Intrinsically Safe (I.S.) Models User Manual HB4056-07 (EN) February 2018 Page 1 of 54 Thank you for purchasing the Casella dBadge2 Personal Noise Dosimeter. We hope that you will be pleased with it and the service that you receive from us and our distributors. If you do have any queries, concerns or problems, please do not hesitate to contact us. Casella prides itself on providing precision instrumentation since 1799, supplying eminent figures including Darwin and Livingstone. A lot has changed in our 200+ year history but what does remain is our commitment to reliable, trustworthy and credible solutions. For more information or to find out more about Casella and our products, please visit our website at: http://www.casellasolutions.com UK Office Casella Regent House Wolseley Road Kempston Bedford MK42 7JY Tel: +44 (0)1234 844100 Email: [email protected] United States China India Casella Inc. Ideal Industries China Ideal Industries India PVT Ltd 415 Lawrence Bell Drive No. 61, Lane 1000 229-230 Spazedge Unit 4 Zhangheng Road Tower B, Sohna Road, Sector 47 Buffalo Pudong District Gurgaon 122001 NY 14221 Shanghai 201203 Haryana USA China India Phone: +1 (716) 2763040 Phone: +86 21 31263188 Phone: +91 124 4495100 Email: [email protected] Email: [email protected] Email: [email protected] February 2018 Page 2 of 54 1. Introduction Noise induced hearing loss (NIHL) remains one of the world’s leading occupational diseases and it has been estimated that 16% of global hearing loss is due to occupational noise exposure. It is acute in the mining, construction, oil & gas sectors but also in a wide variety of industrial manufacturing and other commercial activities where the cumulative effects of excessive noise exposure could lead to this avoidable condition.
    [Show full text]
  • Industrial Hygiene Technical Report Appendix
    INDUSTRIAL HYGIENE TECHNICAL REPORT APPENDIX INTERPRETATION OF RESULTS SURVEY STRATEGY special media for collecting specific gases and vapors and AND SAMPLING METHODS must be used by the manufacturer’s expiration date. Air Monitoring Sampling media was placed in the breathing zone of the workers for the duration of their exposure unless Exposure monitoring was conducted using standard otherwise noted. The active sampling devices were validated industrial hygiene sampling and analytical calibrated prior to and immediately following the methods. Employees for monitoring were selected by the monitoring period using a primary calibration device contact in order to provide a good representative of the to verify the air volume for each sample collected. The various duties and processes in the plant. Air monitoring passive sampling devices were handled as specified by is routinely conducted to evaluate employees’ full-shift the manufacturer and sealed as appropriate for analyses. time-weighted average exposures. Short-term or ceiling The samples were submitted to The Hartford’s Risk limit exposures may also be evaluated. See Interpretation Engineering Laboratory which is fully accredited by The of Results below. American Industrial Hygiene Association (AIHA). Air monitoring methods can include active and passive sampling techniques. Active sampling methods use a Noise Monitoring calibrated battery operated pump attached with a hose Individual noise exposures were measured with 3M to draw air through specific collection media that is Edge noise dosimeters attached to each worker’s collar positioned in the worker’s breathing zone to represent near the ear. The dosimeters were calibrated using a 3M personal exposure. At times the collection media may AC-300 calibrator immediately before and after use.
    [Show full text]
  • Compliance Guide to MSHA's Occupational Noise Exposure Standard
    Compliance Guide to MSHA’s Occupational Noise Exposure Standard U.S. Department of Labor Mine Safety and Health Administration March 2000 TABLE OF CONTENTS INTRODUCTION - HOW TO USE THIS PUBLICATION .......................1 Who should use this publication? .....................................1 What is the purpose of this guide? .....................................1 How can I find what I need quickly? ...................................1 If I follow the guidance in this document, will I be in compliance with the requirements of the new noise standards? .........................1 THE PROBLEM ........................................................1 Why has MSHA promulgated a revised noise standard? ....................1 SCOPE OF THE RULE ...................................................2 What mine operators will have to comply with the new noise standard? .......2 EFFECTIVE DATE ......................................................2 When will the new noise standard become effective? ......................2 KEY REQUIREMENTS OF THE RULE .....................................2 EXPOSURE LEVELS ....................................................2 What is the noise exposure “Action Level”? ..........................................................2 What must I do if a miner’s exposure equals or exceeds the Action Level? .....3 What is the “Permissible Exposure Level”? .............................3 Is there a maximum exposure level? ...................................3 What must I do if a miner’s exposure exceeds the Permissible Exposure
    [Show full text]
  • Quest the Edge Personal Noise Dosimeter Model EG4 User Manual
    THE EDGE PERSONAL NOISE DOSIMETER MODEL EG4 USER MANUAL iii TSI Contact/Service Information THE EDGE PERSONAL NOISE DOSIMETER MODEL EG4 TSI Contact/Service Information Should your TSI equipment need to be returned for repair or for recalibration, please contact the service department at the following number or access the online form via http://rma.tsi.com. For technical issues, please contact Technical Support. Service Department and Technical Support: 1-800-680-1220 (USA) or (651) 490-2860 E-mail: [email protected] Internet: www.tsi.com International customers Contact your local, factory-authorized distributor from whom the product was purchased. You can obtain the name and contact information of your local factory-authorized distributor from TSI Incorporated by using the e-mail or telephone information listed above. iv TSI Contact/Service Information (This page intentionally left blank) v Table of Contents Table of Contents TSI Contact/Service Information ..................................................................................................... iii International customers .................................................................................................................... iii 1: Introduction ........................................................................................................................................ 1 Dosimetry ........................................................................................................................................... 1 Noise dosimeter ...............................................................................................................................
    [Show full text]
  • Noise Measurement Terminology Guide
    A Guide to Noise Measurement Terminology A summary of parameters and functions shown by the Optimus® Sound Level Meters, Trojan Noise Nuisance Recorder and doseBadge® Noise Dosimeter A FREE eBook from The Noise Experts Noise Measurement Terminology An Introduction Most noise measurement equipment is capable of measuring, recording and storing a wide range of parameters. Some of our more advanced instruments can measure and store over 100 different noise parameters at the same time! There are different versions of all of these instruments and some may not show all of the parameters listed in this booklet. This booklet covers the most essential noise terminology, as well as listing all of the parameters that you may see displayed by the Optimus Sound Level Meters, Trojan Noise Nuisance Recorders and the doseBadge Noise Dosimeter. A brief explanation of each parameter is provided along with additional information where appropriate. If you need a more detailed description of any of the parameters mentionned, please ask us and we will be pleased to help. You can contact us through our website at www.cirrusresearch.co.uk/support, email us at [email protected] or call us on 01723 891 655. The Details View on the Optimus and Trojan instruments will show the capabilities fitted to that instrument (pages 6 & 7) so you can see what features are available. © 2015 Cirrus Research plc . E&OE. Terminology Guide/12/15/01 A Cirrus Research plc, the Cirrus Research plc Logo, doseBadge, DOSEBADGE, Optimus, Revo, VoiceTag, AuditStore, Acoustic Fingerprint, the NoiseTools Logo and the Noise-Hub Logo are either registered trademarks or trademarks of Cirrus Research plc in the United Kingdom and/or other countries.
    [Show full text]
  • Edge5 User's Manual
    THE EDGE INTRINSICALLY SAFE PERSONAL NOISE DOSIMETER MODEL EG5 USER MANUAL iii Warnings, Safety Markings, & Standard Information The Edge Intrinsically Safe Personal Noise Dosimeter Model eg5 Warnings, Safety Markings, & Standard Information Warnings concerning safe operation WARNING: To prevent ignition of flammable or combustible atmospheres, no user serviceable parts inside. Repair and battery replacement must be done by authorized service personnel only. WARNING: To reduce the risk of ignition of a flammable or explosive atmosphere, substitution of components may impair intrinsic safety. WARNING: EdgeDock1 and EdgeDock5 are not intrinsically safe and; therefore, cannot be used in a flammable or combustible atmosphere. Standards ANSI S1.25 Personal Noise Dosimeters IEC61252 Personal Sound Exposure Meters RoHS compliant Intrinsic safety: IEC 60079-0:2013 and IEC 60079-11:2012 Safety Markings Manufacturer TSI Incorporated Equipment/model eg5 Dosimeter Code Ex ia I/IIC 143ºC IP65 Ambient temp. range: -10ºC<Tamb<+50ºC (Alternate Code) Ex ia I/IIC T4 IP65 Ambient temp. range: -10ºC<Tamb<+40ºC Certificate number IECEx SIM 08.0012 Maximum charge input Um=5.6V voltage iv Warnings, Safety Markings, & Standard Information Temperature Operating +14 ºF to + 122 ºF (-10 ºC to + 50 ºC) for 143ºC I.S. rating. +14 ºF to + 104 ºF (-10 ºC to + 40 ºC) for T4 I.S. rating. Storage -13 ºF to + 140 ºF (-25 ºC to + 60 ºC). Humidity Range 0 to 95% Non-Condensing TSI Contact/Service Information Should your TSI equipment need to be returned for repair or for recalibration, please contact the service department at the following number or access the online form via http://rma.tsi.com.
    [Show full text]
  • NIOSH Sound Level Meter Application (App) for Ios Devices
    NIOSH Sound Level Meter Application (app) for iOS devices Hearing Loss Prevention Team Engineering and Physical Hazards Branch Division of Applied Research and Technology Developed in collaboration by EA LAB, Inc. under MOU agreement between NIOSH and EA LAB 1 Table of Contents Why did NIOSH develop this app? ............................................................................................................................3 Does this app comply with ANSI or IEC sound level meter or noise dosimeter standards? ...................................5 Main Screen (Sound Level Meter) .............................................................................................................................6 What are the main features of the NIOSH SLM app? ...............................................................................................7 Saved measurements screen .................................................................................................................................. 10 Noise info screen .................................................................................................................................................... 12 a. What noises can cause hearing disorders .................................................................................................. 13 b. How to prevent hearing loss ...................................................................................................................... 14 c. How to conduct a noise survey .................................................................................................................
    [Show full text]