Search
×
FR

Placeholder headline

This is just a placeholder headline

API Technical Report TDB-6 Chapter 6 – Density

$

204

BUY NOW

Placeholder headline

This is just a placeholder headline

API STD 560: Fired Heaters for General Refinery Services

$

721

BUY NOW

Placeholder headline

This is just a placeholder headline

API STD 64: Diverter Equipment Systems

$

324

BUY NOW

Placeholder headline

This is just a placeholder headline

API MPMS CH 17.10.1: Refrigerated Light Hydrocarbon Fluids – Measurement of Cargoes on Board LNG Carries

$

417

BUY NOW

Placeholder headline

This is just a placeholder headline

API RP 13B-1: Testing Water-based Drilling Fluids

$

418

BUY NOW

Placeholder headline

This is just a placeholder headline

API Technical Report TDB-12 Chapter 12 – Thermal Conductivity

$

214

BUY NOW

Placeholder headline

This is just a placeholder headline

API 16FI Frac Iron Guidelines and Requirements

$

129

BUY NOW

ISO 8253:2009

ISO 8253:2009 Acoustics – Audiometric test methods – Part 2: Sound field audiometry with pure-tone and narrow-band test signals

CDN $173.00

SKU: 845f77fb2067 Categories: ,

Description

ISO 8253-2:2009 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi‚Äëfree 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 determination of hearing threshold levels in the frequency range 125 Hz to 8 000 Hz, but this range can be extended to 20 Hz to 16 000 Hz.

ISO 8253-2:2009 does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered.

The purpose of ISO 8253-2:2009 is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible.

Examples of graphical representations of the results are given.

Edition

2

Published Date

2009-12-10

Status

PUBLISHED

Pages

16

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

ISO 8253-2:2009 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi‚Äëfree 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 determination of hearing threshold levels in the frequency range 125 Hz to 8 000 Hz, but this range can be extended to 20 Hz to 16 000 Hz.

ISO 8253-2:2009 does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered.

The purpose of ISO 8253-2:2009 is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible.

Examples of graphical representations of the results are given.

Previous Editions

Can’t find what you are looking for?

Please contact us at: