This Week’s Newly Reaffirmed Standards
We’re delighted to announce this set of newly reaffirmed ASA Standards: S1 Committee (Acoustics): ASA/ANSI S1.16-2000 (R2024) Method for Measuring the Performance of Noise Discriminating and Noise Canceling Microphones Abstract: This American National Standard describes procedures for measuring the performance of noise discriminating and noise canceling microphones. The signal-to-noise ratio is measured at 1/3 octave band intervals with the desired test source in a diffuse noise field. The noise canceling performance of the microphone is defined as the noise canceling index (NCI), a weighted summation of the signal-to-noise ratios. The NCI of the microphone under test can be compared to the required baseline NCI of a laboratory standard pressure microphone. […]
This Week’s Newly Reaffirmed Standards
We’re delighted to announce this set of newly reaffirmed (2024) ASA Standards: ASA STANDARDS S1 COMMITTEE: ASA/ANSI S1.4-2014/Part 1/IEC 61672-1-2013 (R2024) Electroacoustics – Sound Level Meters – Part 1: Specifications Abstract: This part of ANSI/ASA S1.4 / IEC 61672 gives electroacoustical performance specifications for three kinds of sound-measuring instruments: a time-weighting sound level meter that measures exponential time-weighted, frequency-weighted sound levels; an integrating-averaging sound level meter that measures time-averaged, frequency-weighted sound levels; and an integrating sound level meter that measures frequency-weighted sound exposure levels. ASA/ANSI S1.4-2014/Part 2/IEC 61672-2-2013 (R2024) Electroacoustics – Sound Level Meters – Part 2: Pattern Evaluation Tests Abstract: ANSI/ASA S1.4-2014/Part 2 / IEC 61672-2:2013 provides details of […]
This Week’s Newly Reaffirmed Standards
We’re delighted to announce this set of newly reaffirmed (2023) ASA Standards: ASC S2 Committee: ASA/ANSI S2.29-2003 (R2023) Guide for the Measurement and Evaluation of Vibration of Machine Shafts on Shipboard Machinery Abstract: This standard contains procedures for the measurement and evaluation of the mechanical vibration of non-reciprocating machines, as measured on rotating shafts. It contains criteria for evaluating new machines and for vibration monitoring. This American National Standard is related to the various parts of the ISO 7919 series that provides guidelines for the evaluation of different types of machines. The type of machinery covered in this part is shipboard machinery. This is a new ANSI standard, and there […]
This Week’s Set of Newly Reaffirmed ASA Standards
We’re delighted to announce this set of newly reaffirmed (2023) ASA Standards: ASC S2 Committee: ASA/ANSI S2.72-2003/Part 4 (R2023)/ISO 2631-4-2001 (R2023) Mechanical Vibration and Shock – Evaluation of Human Exposure to Whole Body Vibration – Part 4: Guidelines for the Evaluation of the Effects of Vibration and Rotational Motion on Passenger and Crew Comfort in Fixed-Guideway Transport Systems Abstract: The purpose of this part of ANSI S2.72 / ISO 2631 is to help in the design and evaluation of fixedguideway passenger systems, with regard to the impact of vibration and repetitive motions on passenger comfort. Fixed-guideway vehicles provide a predictable but complex multi-axis motion environment that is a function of […]
This Week’s Set of Newly Reaffirmed ASA Standards
We’re delighted to announce this new set of newly reaffirmed (2023) ASA Standards: S3 Committee: ASA/ANSI S3.6-2018 (R2023) Specification for Audiometers Abstract: The audiometers covered in this specification are devices designed for use in determining the hearing threshold level of an individual in comparison with a chosen standard reference threshold level. This standard provides specifications and tolerances for pure tone, speech, and masking signals and describes the minimum test capabilities of different types of audiometers. Learn more. S12 Committee: ASA/ANSI S12.9-2013/Part 1 (R2023) Quantities and Procedures for Description and Measurement of Environmental Sound, Part 1: Basic Quantities and Definitions Abstract: This standard provides basic quantities for description of sound in […]