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DEFINITIONS  AND   STANDARDS :

This section explains most concepts related with sound measurements and sound parameters to be measured according to international standards.

 

National Council of Acoustical Consultants

Take a look at books about noise and acoustics.

• Every aspect of the acoustic environment: Handbook for acoustic ecology

 
• An instrument for measuring sound level is called Sound Level Meter.

 
• Fundamentals of sound measurements by PTB Germany - the national   metrology institute providing scientific and technical services.

 
•  Sound Measurements by Swiss Federal Office of Metrology.

 
•   Acoustic section of Swedish National Testing and Research Institute.

 
•  Measured parameter definitions




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•  Aspects of Measurement of Workplace Noise.

 
• WORK-RELATED hearing loss.

 
• The National Institute on Deafness and Other Communication Disorders (NIDCD) Health Information . Wise Ears!

 
• Noise Pollution Clearinghouse, quieting noise pollution - The Noise Pollution Clearinghouse is a national non-profit organization with extensive online noise related resources.

 
• HEARING CONSERVATION PROGRAM- University of Wisconsin

 
• Noise at Work Regulations

 
• Mechanical engineering - Sound properties, measurements, regulations (USA),

   analysis techniques, room acoustics.
 
• Recent publications in Acoustic Group at Japanese Electrotechnical Laborarory.

 

INTERNATIONAL STANDARDS

Acoustical standards - INCE USA

Acoustical Society of America - standards   You can order acoustical standards here.

The International Electrotechnical Commission is the international standards and conformity assessment body for all fields of electrotechnology.
The IEC’s mission is to promote, through its members, international cooperation on all questions of electrotechnical standardization and related matters, such as the assessment of conformity to standards, in the fields of electricity, electronics and related technologies.

The International Organization for Standardization (ISO) is a worldwide federation of national standards bodies from some 130 countries, one from each country.
The mission of ISO is to promote the development of standardization and related activities in the world with a view to facilitating the international exchange of goods and services, and to developing cooperation in the spheres of intellectual, scientific, technological and economic activity.

Institute of Noise Control Engineering of the USA - INCE USA

IEC1672: draft  - Electroacoustics - Sound Level Meters.

 

ISO1999 - Acoustics - Determination of occupational noise exposure and estimation of noise-induced

                hearing impairment.

ISO9612 - Acoustics - Guidelines for the measurement and assessment of exposure to noise in

                a working environment.

ISO1996-1 - Acoustics - Description and measurement of environmental noise - Part 1: Basic quantities

                     and procedures.

ISO4869-1 - Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation.

ISO4869-2 - Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels

                    when hearing protectors are worn.

ISO7196 - Acoustics - Frequency weighting characteristic for infrasound measurements.

IEC651:1979,1993 - Electroacoustics - Sound Level Meters (under revision)

IEC804:1985,1989,1993 - Electroacoustics - Integrating-averaging sound level meters (under revision)

IEC942:1988 - Electroacoustics - Sound calibrators (under revision)

IEC1252:1993 - Electroacoustics - Specifications for personal sound exposure meters.

IEC1260:1995 - Electroacoustics - Octave-band and fractional-octave-band filters.

      Permissible values of noise in the workplace - Polish standard PN-N-01307
 

• Bruel & Kjaer - High performance sound & vibration measurement instruments

• Larson Davis hand-held sound level meters, portable and hand-held realtime frequency

                      analyzers, noise dosimeters, environmental noise monitoring systems, and
                      condenser microphones and accessories.
 
• CEL Instruments Ltd - one of the world leading companies supplying high quality products to the acoustics industry.

 
• 01dB - using a computer for noise measurement and processing.

 
• Cirrus Research plc- Sound Level Meters, Monitoring Systems from Cirrus Research

 
• Sound and Vibration Toolset for LabVIEW from National Instruments

 

 
 

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• The Soundry is an exciting, interactive, and educational web site about sound.

 
• YAHOO! acoustics links  Science:Acoustics

 
• Acoustics and Vibrations WWW Virtual Library

 
• Acoustics, noise, vibration: Vibro-Acoustic Sciences, Inc.

 
• Vibro-Acoustics

 
• Test & Measurement World Online -- Home Page

 
• YAHOO! acoustics links Engineering:Acoustics

 
• Pennsylvania State University - Acoustics Sites of Interest

 
• STRUCTURAL ACOUSTICS AND BIOMEDICAL ENGINEERING LABORATORY

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