ASA Standards Publishes Newly Adopted Standard: S3.55/Part 8
We’re delighted to announce today the publication of a newly adopted ASA Standard – ASA/ANSI S3.55-2023/Part 8/IEC 60318-8:2022 titled: Electroacoustics – Simulators of human head and ear – Part 8: Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts. This standard was approved via balloting by the volunteer members of our ASC S3 Bioacoustics Committee, chaired by William J. Murphy with Stephenson and Stephenson Research & Consulting. The abstract is: “This part of IEC 60318 describes an acoustic coupler for loading a hearing aid or insert earphone with a specified acoustic impedance when testing its acoustic performance, in the frequency […]
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 […]
ASA Standards Announces Set of Newly Reaffirmed Standards
We’re delighted to announce this new set of newly reaffirmed (2023) ASA Standards: ASA/ANSI S1.18-2018 (R2023) Method for Determining the Acoustic Impedance of Ground Surfaces Abstract: This Standard describes procedures for obtaining the real and imaginary parts of the normalized acoustic impedance ratio of ground surfaces from in-situ measurements of the sound pressure levels at two vertically separated microphones using specified geometries and the averaged values of the difference between the simultaneous, instantaneous sound-pressure signals at the two microphones. It enables the user to either deduce parameters for a ground impedance model by fitting spectral data to templates or obtain values of the normalized specific acoustic impedance ratio of the […]