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MIL-DTL-83511 - Headset-Microphone and Headset-Electrical (Medium Noise Attenuation, Hearing Protective), General Specification for
September 20, 2018 - NPFC

This specification covers headsets and headset-microphone assemblies intended for use in medium ambient noise level environments of 85-105 dBA SPL (Sound Pressure Level). These headset-microphone assemblies use dynamic earphones of the moving coil type that transform electrical...

DNVGL-CG-0493 - Criteria for handling of excessive noise and vibration levels
May 1, 2016 - DNVGL

Objective In order to assign the comfort class notation, COMF, see RU SHIP Pt.6 Ch.8 Sec.1, all the locations on board shall comply with the relevant comfort class noise and vibration limits. However, small deviations from the requirements may be accepted on a case by case basis, depending...

GMW17532 - Air Conditioning Subsystem Level Noise and Vibration Evaluation Procedure
May 1, 2016 - GMW
A description is not available for this item.
ISO 7779 - Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment
November 1, 2018 - ISO

This document specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment. NOTE 1 This document is considered part of a noise test code (see 3.1.2) for this type of equipment and is based on basic noise emission...

IEC 61265 - Electroacoustics - Instruments for Measurement of Aircraft Noise - Performance Requirements for Systems to Measure One-Third-Octave Band Sound Pressure Levels in Noise Certification of Transport-Category Aeroplanes
May 1, 2018 - IEC

This document specifies requirements for the electroacoustical performance of systems of instruments used to measure sound for the purposes of aircraft noise certification, and for other comparisons among aircraft models, and provides methods by which tests can be made periodically to verify...

ISO 20233-1 - Ships and marine technology - Model test method for propeller cavitation noise evaluation in ship design - Part 1: Source level estimation
March 1, 2018 - ISO

This document specifies a model test method for propeller cavitation noise evaluation in ship design. The procedure comprises reproduction of noise source, noise measurements, post processing and scaling. The target noise source is propeller cavitation. Thus, this...

DS/ISO 20233-1 - Ships and marine technology – Model test method for propeller cavitation noise evaluation in ship design – Part 1: Source level estimation
February 26, 2018 - DS

ISO 20233-1:2018 specifies a model test method for propeller cavitation noise evaluation in ship design. The procedure comprises reproduction of noise source, noise measurements, post processing and scaling. The target noise source is propeller cavitation. Thus, this...

SNZ AS/NZS ISO 389.3 - Acoustics – Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
February 25, 2019 - SNZ

This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for puretone bone-conduction audiometry: a) reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold of hearing of young otologically normal persons by...

GMW16434 - Component Level Fuel Tank Slosh and Clunk Noise Evaluation Procedure
February 1, 2018 - GMW
A description is not available for this item.
GMW8467 - Vehicle Level Hydraulic Power Steering Noise Evaluation Procedure
September 1, 2017 - GMW
A description is not available for this item.
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