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THE ACOUSTICAL SOCIETY OF AMERICA STANDARDS PROGRAM

Paul D. Schomer, Chair ASACOS&

Susan Blaeser, Standards ManagerUpdated Nov. 2007

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Why Standardize?

Some reasons are obvious -• Safety• Assure interoperability of parts• Benefit from “best in class” information• Strive for qualitySome are less tangible - • Provide basis for government regulation• Promote product acceptance• Facilitate entry into new markets• Level the competitive field

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Constituent Organizations of the ASA Standards Secretariat

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ASACOSAcoustical Society of America Committee on Standards

• ASACOS – Policy, finances and program oversight– Representative of each ASA Technical Committee – Chairs & Vice Chairs of Standards Committees – Ex Officio representatives from ASA, TAGs, etc.– Acts on behalf of ASA and makes recommendations to the Executive

Council• Executive Committee – Acts for ASACOS when quick action is needed

– Chair, Vice-Chair & Standards Manager • Steering Committee – Procedural matters– Executive Committee Members– Chairs of Committees

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Accredited Standards Committees OperatingUnder ANSI Procedures

• S1- Acoustics• S2- Mechanical

Vibration and Shock• S3- Bioacoustics – S3/SC 1 Animal

Bioacoustics• S12- Noise

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S1, Acoustics

• Acoustical terminology• Sound level meters• Microphones• Acoustical calibrators• Filters• Physical sound measurements• Noise dosimeters• Surface impedance

measurement

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S2, Mechanical Vibration and Shock

• Calibration of shock and vibration transducers

• Characteristics of resilient mounting

• Mechanical vibration of rotating machines

• Human exposure to vibration

• Balancing

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S3, Bioacoustics

• Hearing aid specifications• Audiometry• Speech interference levels• Articulation index• Threshold of hearing--

Audiometric Zero• Calculation of loudness

levels

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S3/SC 1, Animal Bioacoustics

• Effects of sound on animals (aquatic and terrestrial)

• Instrumentation• Weighting• Terminology

NEW

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S12, Noise

• Environmental noise measurement and assessment

• Sound power measurement

• Hearing conservation• Factory noise

measurement• Noise from ships

• Liaison Groups (e.g., SAE, ASTM)– motor vehicles, aircraft, construction

equipment, power tools

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ISO/IEC Technical Advisory Groups (TAGs)Operating Under ANSI Accredited Procedures• IEC/TC29

Electroacoustics

• ISO/TC 43 Acoustics• ISO/TC 43/SC 1 Noise

Continued on next slide.

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ISO/IEC Technical Advisory Groups (TAGs)Operating Under ANSI Accredited Procedures (con’t.)

• ISO/TC 108 Mechanical vibration, shock and condition monitoring – SC 2 Measurement and evaluation of mechanical vibration

and shock as applied to machines, vehicles and structures– SC 3 Use and calibration of vibration and shock measuring

instruments– SC 4 Human exposure to mechanical vibration

and shock– SC 5 Condition monitoring and

diagnostics of machines– SC 6 Vibration and shock generating

systems

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U.S. Technical Advisory Groups

– Organizational members– Chair (vice chair or co-chair) – Provides pool of experts who may participate in

ISO/IEC working groups– Establishes U.S. position on ISO/IEC matters more

than 80 times per year For each ISO/IEC ballot a “coordinator” is

appointed Comments solicited from TAG members Coordinated comments and vote submitted

through ANSI (USNC in IEC)

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ISO Secretariats Administered by ASA

• ISO/TC 108 Mechanical vibration, shock and condition monitoring

• ISO/TC 108/SC 5 Condition monitoring and diagnostics of machines

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Primary Documents

• ANSI Approved Documents– American National

Standards– Nationally Adopted

International Standards– Other, e.g., Technical

Reports• ISO/IEC Approved Documents– ISO/IEC Standards– Other, e.g., Technical

Reports, Technical Specifications

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Standards Committee & Subcommittee Membership

Voting• Organizational Members

Companies Societies, Trade Assoc. Government agencies

Non-voting Individual Experts Working Group Chairs• Working Group Members

Ad hoc Groups Advisory Groups Liaison Groups, e.g., SAE, ASTM

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ANSI Standards Development Process

• New Work Effort– Proposal– Ballot Approval– Allocate to existing or new WG

• Working Group– Develop Draft Document– Ballot by S-Committee– Try to Reverse Negative Votes or Positions

Adopt 30-day review Re-ballot a substantially new document

– Public review and comment• Develop Consensus--Much more than a plurality ~90 %• 5-year Review and Reaffirmation

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ISO Standards Development Process

• New Work Effort– Proposal– Ballot Approval-- TAG Vote – Allocate to existing or new WG

• Working Group– Working Draft– Develop Committee Draft (CD-1, CD-2, etc.)

Ballot by member bodies to become a Draft International Standard (DIS)--TAG Vote

• Committee– Ballot DIS to become Final DIS-- TAG Vote – Ballot FDIS to become a Standard-- TAG Vote

67% of P-members voting; 75 % of votes• 5-year Review and Reaffirmation

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Summary

• National Standard (ANSI)– Ballot to the S-Committee (or Subcommittee) Members

• International Standard (ISO/IEC)– Ballot to the TAG (determines U.S. position)

TAG Members Liaison Groups USA Representative USA Document Coordinator TAG Chair

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Result

• Impact of National and International Standards– Health and safety – e.g. Speech Interference– Public good – e.g. Classroom Acoustics – Measurement – e.g. Sound Power– Instruments – e.g., Sound Level Meter– Trade