ISO 13475-1-1999 PDF

Full title and description

Acoustics — Stationary audible warning devices used outdoors — Part 1: Field measurements for determination of sound emission quantities. This International Standard specifies field test conditions and measurement procedures for obtaining reliable sound emission quantities from stationary outdoor audible warning devices (for example public warning sirens and outdoor sound signalling devices).

Abstract

This part of ISO 13475 defines how to perform on-site (field) measurements to determine the acoustic emission characteristics of stationary outdoor warning devices. It sets out measurement positions, environmental and instrumentation requirements, and reporting formats to ensure reproducible sound emission data. It does not cover spoken messages and contains no recommendations for specific warning signals.

General information

• Status: Published / Confirmed (International Standard).
• Publication date: November 1999 (edition 1, published 4 November 1999).
• Publisher: ISO (International Organization for Standardization).
• ICS / categories: 13.320 (Alarm and warning systems); 17.140.20 (Noise emitted by machines and equipment).
• Edition / version: Edition 1 (1999).
• Number of pages: 19 pages.

Scope

Specifies field measurement methods and test conditions for determining sound emission quantities of stationary audible warning devices used outdoors. Applicable to sirens for public outdoor warning systems and other outdoor sound signalling devices. The standard is intended to produce reliable, reproducible emission-level data for device characterization and comparison; it excludes guidance on spoken messages and does not prescribe specific warning signals.

Key topics and requirements

• Definition of measurement objectives and required emission quantities (e.g., sound pressure levels and spectral data).
• Field measurement procedures: microphone positions, distances, and geometrical arrangements relative to the device.
• Environmental and meteorological conditions to be recorded and, where necessary, controlled or compensated.
• Instrumentation requirements and calibration procedures for microphones and recording equipment.
• Test signal specification and handling of different device outputs (continuous tones, swept signals, pulses).
• Data processing, correction methods, uncertainty estimation and reporting formats to ensure reproducibility.
• Limitations and exclusions (not covering spoken or intelligible voice messages, not specifying warning content).

Typical use and users

Used by acoustic test laboratories, manufacturers of outdoor warning sirens and signalling devices, public-safety authorities, municipal emergency planners, standards bodies and acoustic consultants who need standardized field procedures for measuring and reporting the sound emission performance of stationary outdoor warning devices.

Related standards

Closely related to ISO/TS 13475-2:2000 (Part 2: precision/laboratory methods for determination of sound emission quantities). Other related acoustics standards that may be used alongside this standard include general machinery and equipment noise measurement standards (for example standards addressing emission sound pressure level measurements and instrumentation).

Keywords

acoustics, audible warning device, outdoor siren, field measurement, sound emission, sound pressure level, calibration, test method, public warning system, acoustic emission quantities

FAQ

Q: What is this standard?

A: ISO 13475-1:1999 is an International Standard that specifies field measurement methods for determining the sound emission quantities of stationary audible warning devices used outdoors.

Q: What does it cover?

A: It covers test conditions, measurement geometry, instrumentation and reporting for on-site measurements of outdoor stationary warning devices (sirens and similar devices). It does not cover spoken messages or prescribe specific warning signals.

Q: Who typically uses it?

A: Acoustic test laboratories, manufacturers of audible warning systems, public safety and emergency management authorities, municipal engineers and acoustic consultants use this standard to evaluate and compare device emission performance.

Q: Is it current or superseded?

A: The standard was published in November 1999 and has been maintained/confirmed in ISO's review cycle. Users should check with the national or international standards organization for any later revisions or related technical specifications (for example ISO/TS 13475-2:2000).

Q: Is it part of a series?

A: Yes — it is Part 1 of the ISO 13475 series dealing with stationary audible warning devices; Part 2 (ISO/TS 13475-2:2000) provides precision/laboratory methods.

Q: What are the key keywords?

A: Acoustics, audible warning, siren, field measurement, sound emission, sound pressure level, outdoor warning systems, calibration, test procedure.