SOURCES OF INFORMATION

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1 12 SOURCES OF INFORMATION Professor Colin H Hansen Pauline Jones Department of Mechanical Engineering ISO International Organization for University of Adelaide Standardization South Australia 5005 Case postale 56 AUSTRALIA CH-1211 Genève chansen@mecheng.adelaide.edu.au SWITZERLAND INTRODUCTION This chapter contains a listing of relevant International (ISO & IEC) standards,. Home pages on the internet which contain important noise control information are also listed. The chapter concludes with collections of noise control case studies, handbooks and periodicals. ISO or IEC standards are available in all countries from the national member bodies. Where there is an equivalent national standard, the member body concerned will probably say so when asked to supply the ISO or IEC standard. European or EN standards have been adopted generally as national standards of the member bodies of the European Union and the European Free Trade Association. A great deal of these EN standards are equivalent to ISO or IEC standards. But a group of EN standards concerning safety of machinery and containing clauses on noise or EN standards which are noise test codes for specific machines have an international counterpart only in exceptional cases. From outside Europe one will get these EN standards from the standards organisations CEN or CENELEC. There are other regional standard organisations shown in the ISO internet homepage. Numbers in { } give the corresponding chapter STANDARDS OF THE INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (partly updated January/February 2001) ISO 31-7:1992 Quantities and units -- Part 7: Acoustics { 1 } (Will be revised as ISO ) ISO/TR :1997 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 13: Guidelines { 10 } This part of ISO 140 may be used as an introduction to definitions and measurement procedures which are described in the preceding twelve parts. ISO 226:1987 Acoustics -- Normal equal-loudness level contours { 1 } ISO 266:1997 Acoustics -- Preferred frequencies { 1 }

2 318 Sources of information ISO 230-5:2000 Test code for machine tools -- Part 5: Determination of the noise emission ISO 389-1:1998 Acoustics % Reference zero for the calibration of audiometric equipment -- Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones { 8 } ISO 389-2:1994 Acoustics -- Reference zero for the calibration of audiometric equipent --Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones { 8 } ISO 389-3:1994 Acoustics -- Reference zero for the calibration of audiometric equipment --Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators { 8 } ISO 389-4:1994 Acoustics -- Reference zero for the calibration of audiometric equipment --Part 4: Reference levels for narrow-band masking noise { 8 } ISO/TR 389-5:1998 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 khz to 16 khz { 8 } ISO 389-7:1996 Acoustics -- Reference zero for the calibration of audiometric equipment --Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions { 8 } ISO 532:1975 Acoustics -- Method for calculating loudness level { 1 } ISO 1680: 1999 Acoustics -- Test code for the measurement of airborne noise emitted by rotating electrical machinery (Revision of ISO :1986 and ISO :1986) ISO 1683:1983 Acoustics -- Preferred reference quantities for acoustic levels { 1 } ISO 1999:1990 Acoustics -- Determination of occupational noise exposure and estimation of noise-induced hearing impairment { 4 } ISO 2151:1972 Measurement of airborne noise emitted by compressor/primemover-units intended for outdoor use. ISO 2533:1975 Standard Atmosphere { 1 } ISO 2923:1996 Acoustics -- Measurement of noise on board vessels ISO/TR 3352:1974 Acoustics -- Assessment of noise with respect to its effect on the intelligibility of speech { 4 } ISO 3381:1976 Acoustics -- Measurement of noise inside railbound vehicles

3 Sources of information 319 ISO 3382:1997 Acoustics -- Measurement of the reverberation time of rooms with reference to other acoustical parameters { 1 } ISO 3740:2000 Acoustics -- Determination of sound power levels of noise sources --Guidelines for the use of basic standards and for the preparation of noise test codes ISO 3741:1999 Acoustics -- Determination of sound power levels of noise sources using sound pressure --Precision methods for reverberation rooms ISO :1994 Acoustics -- Determination of sound power levels of noise sources -- Engineering methods for small, movable sources in reverberant fields -- Part 1: Comparison method for hard-walled test rooms ISO :1994 Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Engineering methods for small, movable sources in reverberant fields --Part 2: Methods for special reverberation test rooms ISO 3744:1994 Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Engineering method in an essentially free field over a reflecting plane ISO/DIS 3745 Acoustics -- Determination of sound power levels of noise sources using sound pressure --Precision methods for anechoic and hemi-anechoic rooms ISO 3746:1995 Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Survey method using an enveloping measurement surface over a reflecting plane ISO 3747:2000 Acoustics -- Determination of sound power levels of noise sources using sound pressure %Comparison method in situ ISO :1991 Hydraulic fluid power -- Test code for determination of airborne noise levels -- Part 1: Pumps ISO :1991 Hydraulic fluid power -- Test code for determination of airborne noise levels -- Part 2: Motors ISO :1991 Hydraulic fluid power -- Test code for determination of airborne noise levels -- Part 3: Pumps -- Method using a parallelepiped microphone array ISO :1990 Acoustics -- Hearing protectors -- Part 1: Subjective method for the measurement of sound attenuation { 11 } ISO :1994 Acoustics -- Hearing protectors -- Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn { 11 } ISO/TR :1989 Acoustics -- Hearing protectors -- Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes { 11 }

4 320 Sources of information ISO/TR :1998 Acoustics -- Hearing protectors -- Part 4: Measurement of effective sound pressure levels for level-dependent sound restoration ear-muffs { 11 } ISO/TR 4870:1991 Acoustics -- The construction and calibration of speech intelligibility tests { 4 } ISO 4871:1996 Acoustics -- Declaration and verification of noise emission values of machinery and equipment ISO 4872:1978 Acoustics -- Measurement of airborne noise emitted by construction equipment intended for outdoor use -- Method for determining compliance with noise limits ISO 5128:1980 Acoustics -- Measurement of noise inside motor vehicles ISO /DIS 5129 Acoustics -- Measurement sound pressure levels in the interior of aircraft during flight ISO 5131:1996 Acoustics -- Tractors and machinery for agriculture and forestry --Measurement of noise at the operator's position -- Survey method ISO 5135:1997 Acoustics -- Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room ISO /DIS 5136 Acoustics -- Determination of sound power radiated into a duct by fans and other air-moving devices --In-duct method ISO 6189:1983 Acoustics -- Pure tone air conduction threshold audiometry for hearing conservation purposes { 11 } ISO 6393:1998 Acoustics -- Measurement of exterior noise emitted by earth-moving machinery -- Stationary test condition ISO 6394:1998 Acoustics -- Measurement at the operator's position of noise emitted by earthmoving machinery -- Stationary test conditions ISO 6395:1988 Acoustics -- Measurement of exterior noise emitted by earth-moving machinery -- Dynamic test conditions ISO 6396:1992 Acoustics -- Measurement at the operator's position of noise emitted by earthmoving machinery -- Dynamic test conditions ISO 6798:1995 Reciprocating internal combustion engines -- Measurement of emitted airborne noise -- Engineering method and survey method. ISO 6926:1999 Acoustics -- --Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels

5 Sources of information 321 ISO/FDIS 7029 Acoustics -- Statistical distribution of hearing thresholds as a function of age { 11 } ISO 7182:1984 Acoustics -- Measurement at the operator's position of airborne noise emitted by chain saws ISO 7196:1995 Acoustics -- Frequency-weighting characteristic for infrasound measurements { 4 } ISO 7216:1992 Acoustics -- Agricultural and forestry wheeled tractors and self-propelled machines -- Measurement of noise emitted when in motion ISO 7235:1991 Acoustics -- Measurement procedures for ducted silencers -- Insertion loss, flow noise and total pressure loss ISO :1985 Acoustics -- Statistical methods for determining and verifying stated noise emission values of machinery and equipment -- Part 1: General considerations and definitions { 5 } ISO 7779:1999 Acoustics -- Measurement of airborne noise emitted by information technology and telecommunications equipment ISO 7917:1987 Acoustics -- Measurement at the operator's position of airborne noise emitted by brush saws ISO 7960:1995 Airborne noise emitted by machine tools -- Operating conditions for woodworking machines { 5,10 } ISO 8201:1987 Acoustics -- Audible emergency evacuation signal { 4 } ISO :1989 Acoustics -- Audiometric test methods -- Part 1: Basic pure tone air and bone conduction threshold audiometry { 8 } ISO :1992 Acoustics -- Audiometric test methods -- Part 2: Sound field audiometry with pure tone and narrow-band test signals { 8 } ISO :1996 Acoustics -- Audiometric test methods -- Part 3: Speech audiometry { 8 } ISO/DIS 8500 Airborne noise emitted by machine tools -- Operating conditions for mechanical presses up to 2500 kn ISO :1998 Reciprocating internal combustion engine driven alternating current generating sets -- Part 10: Measurement of airborne noise by the enveloping surface method. ISO/DIS Acceptance code for gear units -- Part 1:Test code for airborne sound {5, 10 }

6 322 Sources of information ISO 9207:1995 Manually portable chain-saws with internal combustion engine --Determination of sound power levels -- Engineering method (grade 2) ISO 9295:1988 Acoustics -- Measurement of high-frequency noise emitted by computer and business equipment ISO 9296:1988 Acoustics -- Declared noise emission values of computer and business equipment ISO 9568:1993 Cinematography -- Background acoustic noise levels in theatres, review rooms and dubbing rooms { 4 } ISO 9611:1996 Acoustics -- Characterization of sources of structure-borne sound with respect to sound radiation from connected structures -- Measurement of velocity at the contact points of machinery when resiliently mounted ISO 9612:1997 Acoustics -- Guidelines for the measurement and assessment of exposure to noise in a working environment { 4 } ISO :1996 Acoustics -- Attenuation of sound during propagation outdoors -- Part 2: General method of calculation { 10 } ISO :1993 Acoustics -- Determination of sound power levels of noise sources using sound intensity -- Part 1: Measurement at discrete points ISO :1996 Acoustics -- Determination of sound power levels of noise sources using sound intensity -- Part 2: Measurement by scanning ISO 9902:1993 Textile machinery acoustics -- Determination of sound pressure levels and sound power levels emitted by textile machines -- Engineering and survey methods Parts 1 to 7 are now DISs ISO :1996 Ergonomic assessment of speech communication -- Part 1: Speech interference level and communication distances for persons with normal hearing capacity in direct communication (SIL method). { 4 } ISO 10053:1991 Acoustics -- Measurement of office screen sound attenuation under specific laboratory conditions ISO 10302:1996 Acoustics -- Method for the measurement of airborne noise emitted by small air-moving devices ISO/DIS Hearing protectors -- Safety requirements and testing -- Ear-muffs. { 11 } ISO/DIS Hearing protectors -- Recommendations for selection, use, care and maintenance -- Guidance document. { 11 }

7 Sources of information 323 ISO/DIS Hearing protectors -- Safety requirements and testing -- Ear-plugs. { 11 } ISO 10494:1993 Gas turbines and gas turbine sets -- Measurement of emitted airborne noise-- Engineering/survey method ISO :1996 Acoustics -- Determination of sound absorption coefficient and impedance in impedance tubes -- Part 1: Method using standing wave ratio { 5 } ISO :1998 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes -- Part 2: Transfer-function method { 5 } ISO 10843:1997 Acoustics -- Methods for the description and physical measurement of single impulses or series of impulses { 4, 5 } ISO :1997 Acoustics and vibration -- Laboratory measurement of vibro-acoustic transfer properties of resilient elements -- Part 1: Principles and guidelines { 10 } ISO :1997 Acoustics and vibration -- Laboratory measurement of vibro-acoustic transfer properties of resilient elements -- Part 2: Dynamic stiffness of elastic supports for translatory motion -- Direct method { 10 } ISO/DIS Acoustics and vibration -- Laboratory measurement of vibro-acoustic transfer properties of resilient elements -- Part 3: Dynamic stiffness of elastic supports for translatory motion -- Indirect method { 10 } ISO 10847:1997 Acoustics -- In-situ determination of insertion loss of outdoor noise barriers of all types { 10 } ISO 10996:1999 Photography -- Still-picture projectors -- Determination of noise emissions. { 10 } ISO 11094:1991 Acoustics -- Test code for the measurement of airborne noise emitted by power lawn mowers, lawn tractors, lawn and garden tractors, professional mowers, and lawn and garden tractors with mowing attachments ISO 11200:1995 Acoustics -- Noise emitted by machinery and equipment -- Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions ISO 11201:1995 Acoustics -- Noise emitted by machinery and equipment -- Measurement of emission sound pressure levels at a work station and at other specified positions --Engineering method in an essentially free field over a reflecting plane ISO 11202:1995 Acoustics -- Noise emitted by machinery and equipment -- Measurement of emission sound pressure levels at a work station and at other specified positions -- Survey method in situ

8 324 Sources of information ISO 11203:1995 Acoustics -- Noise emitted by machinery and equipment -- Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level ISO 11204:1995 Acoustics -- Noise emitted by machinery and equipment -- Measurement of emission sound pressure levels at a work station and at other specified positions -- Method requiring environmental corrections ISO/DIS Acoustics -- Noise emitted by machinery and equipment -- Dtermination of emission sound pressure levels using sound intensity ISO :1995 Acoustics -- Determination of sound insulation performances of enclosures -- Part 1: Measurements under laboratory conditions (for declaration purposes) ISO :1995 Acoustics -- Determination of sound insulation performances of enclosures -- Part 2: Measurements in situ (for acceptance and verification purposes) ISO 11654:1997 Acoustics -- Sound absorbers for use in buildings -- Rating of sound absorption { 10 } ISO/TR :1995 Acoustics -- Recommended practice for the design of low-noise machinery and equipment -- Part 1: Planning ISO/TR :1998 Acoustics -- Recommended practice for the design of low-noise machinery and equipment -- Part 2: Introduction to the physics of low-noise design ISO 11689:1996 Acoustics -- Procedure for the comparison of noise-emission data for machinery and equipment ISO :1996 Acoustics -- Recommended practice for the design of low-noise workplaces containing machinery -- Part 1: Noise control strategies { 5, 7, 10 } ISO :1996 Acoustics -- Recommended practice for the design of low-noise workplaces containing machinery -- Part 2: Noise control measures { 5, 7, 10 } ISO/TR :1997 Acoustics -- Recommended practice for the design of low-noise workplaces containing machinery -- Part 3: Sound propagation and noise prediction in workrooms { 5, 7, 10 } ISO 11691:1995 Acoustics -- Measurement of insertion loss of ducted silencers without flow-- Laboratory survey method ISO 11820:1996 Acoustics -- Measurements on silencers in situ ISO 11821:1997 Acoustics -- Measurement of the in situ sound attenuation of a removable screen

9 Sources of information 325 ISO 11957:1996 Acoustics -- Determination of sound insulation performance of cabins -- Laboratory and in situ measurements ISO 12001:1996 Acoustics -- Noise emitted by machinery and equipment -- Rules for the drafting and presentation of a noise test code { 1 } ISO :1998 Sound power rating of air-conditioning and air-source heat pump equipment -- Part 1: Non-ducted outdoor equipment. ISO :1998 Sound power rating of air-conditioning and air-source heat pump equipment -- Part 2: Non-ducted indoor equipment. ISO/FDIS Reciprocating internal combustion engines -- Test code for the measurement of structure-borne noise emitted from high-speed and medium-speed reciprocating internal combustion engines measured at the engine feet. ISO :1999 Acoustics -- Stationary audible warning devices used outdoors -- Part 1: Field measurements for determination of sound emission quantities { 4 } ISO 14163:1998 Acoustics -- Guidelines for noise control by silencers ISO /DIS Acoustics -- Measurement and modelling of spatial sound distribution curves in workrooms for evaluation of their acoustical performance { 10 } ISO :2000 Acoustics -- Guidelines for noise control by enclosures and cabins {5, 10} INTERNATIONAL ELECTROTECHNICAL COMMISSION STANDARDS IEC ( ). Rotating electrical machines - Part 9: Noise limits. IEC ( ). International Electrotechnical Vocabulary - Chapter 801: Acoustics and electroacoustics. { 1 } IEC 60303( ). IEC provisional reference coupler for the calibration of earphones used in audiometry. { 8 } IEC 60318( ). An IEC artificial ear, of the wide band type, for the calibration of earphones used in audiometry. { 8 } IEC ( ). Industrial-process control valves. Part 8: Noise considerations. Section One: Laboratory measurement of noise generated by aerodynamic flow through control valves. IEC ( ). Industrial-process control valves - Part 8: Noise considerations - Section 2: Laboratory measurement of noise generated by hydrodynamic flow through control valves

10 326 Sources of information IEC ( ). Industrial-process control valves - Part 8: Noise considerations - Section 3: Control valve aerodynamic noise prediction method. IEC ( ). Industrial-process control valves - Part 8: Noise considerations - Section 4: Prediction of noise generated by hydrodynamic flow. IEC 60551( ). Determination of transformer and reactor sound levels. IEC ( ). Audiometers - Part 1: Pure-tone audiometers. { 8 } IEC ( ). Audiometers - Part 2: Equipment for speech audiometry. { 8 } IEC ( ). Audiometers - Part 3: Auditory test signals of short duration for audiometric and neuro-otological purposes. { 8 } IEC ( ). Audiometers - Part 4: Equipment for extended high-frequency audiometry. { 8 } IEC Sound Level Meters. { 6 } IEC ( ). Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 1: General requirements. IEC Integrating averaging sound level meters. { 6 } IEC 60942( ). Electroacoustics - Sound calibrators. { 6 } IEC x. Filters for the measurement of audible sound in the presence of ultrasound. { 6 } IEC 61043( ). Electroacoustics - Instruments for the measurement of sound intensity - Measurements with pairs of pressure sensing microphones. { 6 } IEC 61063( ). Acoustics - Measurement of airborne noise emitted by steam turbines and driven achinery. IEC 61183( ). Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters. { 6 } IEC 61252( ). Electroacoustics - Specifications for personal sound exposure meters { 4, 6, 7 } IEC 61260( ). Electroacoustics - Octave-band and fractional-octave-band filters. { 6 } IEC 61027( ). Instruments for the measurement of aural acoustic impedance/admittance. { 8 }

11 Sources of information 327 IEC 61063( ). Acoustics - Measurement of airborne noise emitted by steam turbines and driven machinery INTERNET SITES FOR MORE INFORMATION (updated January 2001) ACGIH American Conference of Governmental Industrial Hygienists, USA: CCOHS Canadian Centre for Occupational Health and Safety: Bilingual English/French FIOH Finnish Institute for Occupational Health: Trilingual English/Finnish/Swedish FIOSH Federal Institute for Occupational Safety and Health, Germany: Partly bilingual English/German HSE Health and Safety Executive, UK: I-INCE International Institute of Noise Control Engineering: INRS Institut National de Recherche et de Securité, France: partly bilingual English/French NIOSH, National Institute for Occupational Safety and Health, USA: OSHA Occupational Safety and Health Administration, USA: WHO World Health Organization, Geneva: partly bilingual English/French Standards IEC International Electrotechnical Commission: ISO International Organization for Standardization: WSSN World Standards Services Network: Links to national and regional standards institutions, e.g. ANSI; CEN; CENELEC.

12 328 Sources of information COLLECTIONS OF CASE STUDIES ( updated January 2001) CCOHS, Canadian Centre for Occupational Health and Safety (ed.) (Updated quarterly). Noise Levels Database. Available on OSH CanData CD-ROM, CCOHS Client Services, Hamilton,Ontario, Canada Examples on the website (see section 12.4.) FIOH Finnish Institute for Occupational Health, Finland (ed.) (1999). Noise emission data of electrical hand held power tools. Available on website: HSE, Health and Safety Executive,UK (ed.) (1995). Sound solutions: Techniques to reduce noise at work. Guidance HSG138, HSE Information Services, Merseyside,UK (see section 12.4.). HSE (ed.) (1995). Noise control at foundry shakeouts. Specific Guidance (unnumbered), HSE Information Services, Merseyside,UK. HSE (ed.) (1998). Control of noise at metal cutting saws. Specific Guidance EIS27, HSE Information Services, Merseyside,UK. HSE (ed.) (1998). Control of noise at power presses. Specific Guidance EIS29, HSE Information Services, Merseyside,UK. HSE (ed.) (1993). Control of noise in quarries. Specific Guidance HSG109, HSE Information Services, Merseyside,UK. HSE (ed.) (1990). Noise control in the rubber industry. Specific Guidance (unnumbered), HSE Information Services, Merseyside,UK. Ingemansson, Stig: Noise control - principles and practice. This book, first published in Swedish by Arbetarskyddsfonden, the Swedish Work Environment Fund was translated in different languages and disseminated as a guide for workers and employers by the U.S. Department of Labor. It has been checked and improved by the author and edited with William W.Lang in Noise/News International (NNI) beginning with Vol. 2. No. 2, 1994 June. The outstanding illustrations should assist engineers in explaining to others the fundamental principles of noise control. An overwiew was given in NNI Vol. 7, No. X, 1999, June. Kurze, U.J. et al (1992). Noise reduction at the workplace (III). (in German) Research applications Fa14, 2 nd ed. FIOSH Federal Institute for Occupational Safety and Health, Berlin/Dortmund (see section 12.4.). NIOSH, National Institute for Occupational Safety and Health, USA (ed.) (1975). Industrial noise control manual. Download as pdf-document from website (see section 12.4.), with collection of case studies.

13 Sources of information 329 Schmidt, K.-P.(1992). Noise reduction at the workplace (IV). (in German) Research applications Fa15, 2 nd ed. FIOSH Federal Institute for Occupational Safety and Health, Berlin/Dortmund (see section 12.4.) HANDBOOKS (updated January 2001) AIHA Noise Committee; Berger, E.H. et al.(ed.) (1986). Industrial Noise Manual. American Industrial Hygiene Association, 4th edition,aiha Press,Fairfax, VA. Barber, A. (1992). Handbook of noise and vibration control, 6 th edition. Elsevier, Oxford. Beranek, L.L. (1988) (ed.) Noise and Vibration Control, Revised edition. Institute of Noise Control Engineering, Washington, DC. Beranek, L.L. & Ver, I.L. (eds.) (1992). Noise and vibration control engineering. McGraw Hill, New York. Bies, D.A. and Hansen, C.H. (1996). Engineering noise control. 2 nd edition, E & FN Spon, London. Crocker (Ed.) (1998). Handbook of acoustics. Publication , ACGIH, Cincinnati,Ohio (see section 12.4.) Harris, C.M. (1991) (ed.) Handbook of Acoustical Measurements and Noise Control. 3 rd ed.., McGraw-Hill Book Co., New York. Reprint in 1997 by ASA, Acoustical Society of America. ISO (Ed.) (1995). Acoustics - Vol.1: General aspects of acoustics; methods of noise measurement in general; noise with respect to human beings. ISO, Geneva (see section 12.4.) ISO (Ed.) (1995). Acoustics - Vol.2: Noise emitted by vehicles; noise emitted by specific machines and equipment; acoustics in building. ISO, Geneva (see section 12.4.) NIOSH (1978). Industrial Noise Control Manual. DHHS(NIOSH) Publication No , Cincinnati, Ohio (as pdf-document online see section 12.4.). NIOSH (1996). Preventing occupational hearing loss - A practical guide.dhhs(niosh) Publication No , Cincinnati, Ohio (as pdf-document online see section 12.4.). Probst, W. (1995). Noise abatement products - components and systems for absorption and insulation of sound.(in German, partly trilingual German, English, French) Edited by FIOSH Federal Institute for Occupational Safety and Health, Berlin/Dortmund, TÜV-Verlag,Cologne.

14 330 Sources of information Schaffer, M.E. (1993). Practical Guide to Noise and Vibration Control for HVAC Systems (SI). ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA.(see website: ) Sound Research Laboratories (1991). Noise control in industry. E&FN Spon, London. Suter, A.H. (Chapter Editor) (1998). Noise. In: ILO Encyclopaedia of Occupational Health and Safety,4th edition, wholly rearranged and revised in print, on CD-ROM and online, ILO International Labour Organization, Geneva.(see website in English, French & Spanish: PERIODICALS NOISE CONTROL ENGINEERING JOURNAL, bi-monthly, peer reviewed, published by INCE/USA Institute of Noise Control Engineering of the USA, Saddle River, NJ, (see website: ) NOISE AND HEALTH, quarterly, Editor-in-Chief Deepak Prasher, NRN Publications, London (see website: ) NOISE/NEWS INTERNATIONAL (NNI), quarterly, news magazine with internet supplement, published by I-INCE and INCE/USA, Saddle River, NJ, (see website: )