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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 energy...

DS/EN IEC 60268-4 - Sound system equipment – Part 4: Microphones
November 12, 2018 - DS

This part of IEC 60268 specifies methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also details the characteristics to be specified by the manufacturer. It applies to sound...

MIL-PRF-26542/4 - MICROPHONE ELEMENT, M-101/AIC
July 16, 2018 - NPFC

Microphone element M-101/AIC is a noise canceling dynamic moving coil microphone element designed for use on a headband type headset at low altitudes or for use in an oxygen mask or pressure-type oxygen helmet, at altitudes where the use of an oxygen helmet is required. The microphone element is...

ISO FDIS 22259 - Conference systems - Equipment - Requirements
December 10, 2018 - ISO

This document specifies requirements for typical conference systems, the parts they are composed of, the auxiliary devices necessary for their use (such as microphones, headphones, and sound reinforcement equipment) and the environment in which they are used. These requirements ensure...

IEC 60268-4 - Sound system equipment - Part 4: Microphones
September 1, 2018 - IEC

This part of IEC 60268 specifies methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also details the characteristics to be specified by the manufacturer. It applies to sound...

IEC 60268-4 REDLINE - Sound system equipment - Part 4: Microphones
September 1, 2018 - IEC

This part of IEC 60268 specifies methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also details the characteristics to be specified by the manufacturer. It applies to sound...

QPL-26542 - Microphone, and Microphone Assemblies, Dynamic General Specification for
May 11, 2018 - NPFC

QUALIFIED PRODUCT LIST OF PRODUCTS QUALIFIED UNDER PERFORMANCE SPECIFICATION MIL-PRF-26542 Microphone, and Microphone Assemblies, Dynamic General Specification for This list has been prepared for use by or for the Government in the acquisition of products covered by the subject...

MIL-DTL-5794 - MICROPHONE UNIT M-6A/UR AND MICROPHONE, CARBON M-51/UR (CARBON NOISE CANCELLING)
April 20, 2018 - NPFC

This specification covers two types of noise canceling; carbon microphone units designated Microphone Unit M-6A/UR and Carbon Microphone M-51/UR.

MIL-PRF-26542/10 - MICROPHONE ASSEMBLY, M-138/G
May 24, 2018 - NPFC
A description is not available for this item.
ISO FDIS 4869-6 - Acoustics - Hearing protectors - Part 6: Determination of sound attenuation of active noise reduction earmuffs
October 31, 2018 - ISO

This document is concerned with active noise reduction (ANR) earmuffs. It specifies the test methods for the determination of the active insertion loss and calculation procedures for deriving the total attenuation. For this aim, the values of sound attenuation in the passive mode also have to be...

GMW14055 - Customer Actuated Sound Vehicle Level Evaluation Procedure
December 1, 2018 - GMW

Introduction Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. Purpose. To provide a common procedure for recording the sounds of subsystems (that can be...

IEC 60268-21 - Sound system equipment – Part 21: Acoustical (output-based) measurements
November 1, 2018 - IEC

This part of IEC 60268 specifies an acoustical measurement method that applies to electroacoustical transducers and passive and active sound systems, such as loudspeakers, TV-sets, multi-media devices, personal portable audio devices, automotive sound systems and professional equipment. The device...

DS/EN IEC 61265 - Electroacoustics – Instruments for measurement of aircraft noise – Performance requirements for systems to measure sound pressure levels in noise certification of aircraft
August 21, 2018 - DS

IEC 61265:2018 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 that...

BS EN IEC 60268-4 - Sound system equipment Part 4: Microphones
November 30, 2018 - BSI
A description is not available for this item.
MIL-PRF-26542/8 - MICROPHONE AND MICROPHONE ASSEMBLY, DYNAMIC, M-116( )/G AND M26542/8-01
May 24, 2018 - NPFC

This microphone is used in the M42 Series gas-mask, in the US Army applications including Tanker crews.

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 that...

DS/EN IEC 60942 - Electroacoustics – Sound calibrators
March 13, 2018 - DS

This document specifies the performance requirements for three classes of sound calibrator: class LS (Laboratory Standard), class 1 and class 2. Acceptance limits are smallest for class LS and greatest for class 2 instruments. Class LS sound calibrators are normally used only in the laboratory;...

ITU-R BT.1871 - User requirements for wireless microphones
December 1, 2017 - ITU-R

This Recommendation deals with user requirements for wireless microphones. It contains typical system parameters and operational requirements for analogue and digital wireless microphones, which may be used by administrations and broadcasters when planning tuning ranges within the...

DS/EN IEC 60118-4 - Electroacoustics – Hearing aids – Part 4: Induction-loop systems for hearing aid purposes – System performance requirements
February 12, 2018 - DS

IEC 60118-4:2014 is applicable to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil (telecoil). Throughout this standard, it is assumed that the...

MIL-PRF-26542 - MICROPHONE, AND MICROPHONE ASSEMBLIES, DYNAMIC GENERAL SPECIFICATION FOR
May 18, 2017 - NPFC

This specification covers the general requirements for moving coil, noise-canceling dynamic microphones. The products described herein are used in oxygen and gas-masks, and headsetmicrophones (boom-mounted and protective-shield mounted). These parts provide communications within moderate to...

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