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MIL-PRF-87819 - HEADSET-MICROPHONE, (HEARING PROTECTIVE TYPE, HIGH AND MODERATE AMBIENT NOISE LEVELS), GENERAL SPECIFICATION FOR
May 18, 2017 - NPFC

This specification covers the requirements for headset-microphones with rigid headband. These parts meet established requirements for communications equipment used to protect against hazardous noise exposure and are approved for use in certain high and moderate ambient noise...

QPL-87819 - Headset-Microphone, (Hearing Protective Type, High and Moderate Ambient Noise Levels), General Specification for
March 17, 2017 - NPFC

QUALIFIED PRODUCT LIST OF PRODUCTS QUALIFIED UNDER PERFORMANCE SPECIFICATION MIL-PRF-87819 Headset-Microphone, (Hearing Protective Type, High and Moderate Ambient Noise Levels), General Specification for This list has been prepared for use by or for the Government in the...

ANSI/ASA S12.72 - American National Standard Procedure for Measuring the Ambient Noise Level in a Room
January 1, 2015 - ASA

This standard specifies requirements and procedures for the measurement of sound pressure levels in building spaces or rooms. These requirements and procedures apply ideally to measurements performed in unoccupied spaces, with normal building services and HVAC equipment operating under...

SSPC AMBIENT CONDITIONS - MONITORING AND CONTROLLING AMBIENT CONDITIONS DURING COATING OPERATIONS
November 1, 2004 - SSPC

Introduction The locally prevailing air temperature, the moisture content in the air (% relative humidity), and the temperature at which moisture will condense on surfaces (dew point) are commonly called the ambient conditions. If these conditions are not within the ranges required by a...

NOISE-VIBRATION PROBLEM - NOISE-VIBRATION PROBLEM-SOLUTION WORKBOOK
AIHA
A description is not available for this item.
AIHA NOISE & HEARING - THE NOISE MANUAL
AIHA
A description is not available for this item.
ANSI/ASA S3.1 - American National Standard Maximum Permissible Ambient Noise Levels for Audiometric Test Rooms
August 3, 1999 - ASA

Hearing measurements in an audiometric test room may be conducted for different audiometric purposes over different test frequency ranges. However, if the ambient noise level is excessively high, some hearing threshold levels measured in that environment will be...

ASA 99 - MAXIMUM PERMISSIBLE AMBIENT NOISE LEVELS FOR AUDIOMETRIC TEST ROOMS
ASA
A description is not available for this item.
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...

OpenGL 4 Shading Language Cookbook
September 28, 2018 - PACKT

Over 70 recipes that cover advanced techniques for 3D programming such as lighting, shading, textures, particle systems, and image processing with OpenGL 4.6 Key Features *Explore techniques for implementing shadows using shadow maps and shadow volumes *Learn to use GLSL features such as compute,...

ECMA TR/107 - An optional alternate background noise correction sensitive to the steadiness of background noise
December 1, 2017 - ECMA

This Technical Report describes an alternate background noise correction to the standard background noise correction in ECMA-74 and ISO 7779. The alternate background procedure may permit the reporting of lower noise emissions for quiet products than those reported using the...

DS/EN ISO 24504 - Ergonomics – Accessible design – Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014)
June 27, 2016 - DS

ISO 24504:2014 specifies methods to determine an appropriate sound pressure level range for spoken announcements in environments where ambient noise is less than 80 dB. The specified methods follow the concepts of ISO/IEC Guide 71 and includes consideration of older persons...

DIN EN ISO 24504 - Ergonomics - Accessible design - Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014)
December 1, 2016 - DIN

This International Standard specifies methods to determine an appropriate sound pressure level range for spoken announcements in environments where ambient noise is less than 80 dB. The specified methods follow the concepts of ISO/IEC Guide 71 and includes consideration of...

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