Acoustics. Audiometric test methods - Sound field audiometry with pure-tone and narrow-band test signals Ingestion-build-61878 policy guidance and advice)

policy guidance and advice)

This document is used in conjunction with BS EN 1363-1

As well as establishing a European grouping system for materials for welding

Nor does it include requirements for safety devices which do not incorporate a flame arrestor which are covered by BS EN 730-2

Acoustics. Audiometric test methods - Sound field audiometry with pure-tone and narrow-band test signals Ingestion-build-61878 policy guidance and advice)BS EN ISO 8253 2: 2009 Acoustics. Audiometric test methods. Sound field audiometry with pure tone and narrow band test signals BS EN ISO 8253 2 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi free sound fields, and procedures for sound field audiometry using pure tones, frequency modulated tones or other narrow band test signals presented by means of one or more loudspeakers. The primary purpose is the