Table of Contents

Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols<br>5 Range of sound pressure level of spoken <br>&nbsp;&nbsp;announcements<br>Annex A (normative) - Method for measuring the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sound pressure level of spoken announcements<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and ambient noise<br>Annex B (informative) - Effects of age-related hearing <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;loss on word recognition<br>Annex C (informative) - Examples of measurement condition<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and result records<br>Annex D (informative) - STI method to determine minimum<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speech level<br>Bibliography

Abstract

Defines methods to determine an appropriate sound pressure level range for spoken announcements in environments where ambient noise is less than 80 dB.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 159
Supersedes	ISO/DIS 24504 : 60.00 (2014)