ISO 23351-2:2026

Name: ISO 23351-2:2026 — Acoustics — Measurement of speech level reduction of furniture ensembles and enclosures — Part 2: Field method
SKU: ISO 23351-2:2026
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Acoustics — Measurement of speech level reduction of furniture ensembles and enclosures — Part 2: Field method

Название (английский):

ISO 23351-2:2026

Acoustics — Measurement of speech level reduction of furniture ensembles and enclosures — Part 2: Field method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 15
Дата публикации:: 11 августа 2026 г.
Издание:: ISO IS 23351 edition 1 version 1
ICS:: 91.120.20

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Цена:27 000 ₽

Описание (английский):

This document specifies a method to determine the apparent speech level reduction of furniture ensembles and enclosures (hereinafter referred to as test objects) in field conditions meeting engineering grade of accuracy. The method is applicable to furniture ensembles or enclosures, which can be used by one or more occupants. This method is not intended for single components used in workstations, such as a screen, a storage unit, a table, a luminaire, a cupboard, a bookshelf, a standard chair, a wall absorber, or a ceiling absorber.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 23351-2:2026 – Acoustics - Measurement of Speech Level Reduction of Furniture Ensembles and Enclosures - Part 2: Field Method – is an international standard developed by ISO to provide a reliable field method for determining the apparent speech level reduction of furniture ensembles and enclosures. This standard specifies acoustic measurement procedures outside laboratory settings, meeting an engineering grade of accuracy. It is applicable for testing complete furniture ensembles and enclosures, typically used by one or more occupants, such as pods, meeting booths, or multi-component workstations. The approach ensures that products' acoustic performance can be evaluated in situ, where installation and operation conditions reflect real-world environments.

Key Topics

Scope of Application

The standard focuses on full furniture ensembles or enclosures, not on individual workstation components (e.g., screens, tables, chairs).
Applicable to test objects assembled in finished rooms and intended for use by one or more occupants.

Measurement Method

Apparent speech level reduction is determined by comparing sound power levels with and without the test object in the chosen environment.
Measurements are performed using sound sources that simulate normal speech and high-precision microphones placed in defined positions.
Procedures accommodate both fixed microphone positions and scanning methods, adapting to the size and configuration of the test object.

Field Testing Conditions

The room used for measurement must provide adequate space around the test object and meet specified requirements for wall and ceiling proximity.
Environmental and background noise corrections are applied as per ISO 3744 and ISO 3382-2 standards.
The test object is positioned according to the manufacturer’s instructions and is unoccupied during testing to ensure consistency.

Reporting and Data

Results include detailed specifications of the test object, test environment, equipment used, measurement conditions, and outcomes.
Recommendations ensure that manufacturer claims about acoustic performance can be verified reliably.

Applications

Office and Workplace Design

Supports architects, designers, and facility managers in selecting acoustic furniture solutions (phone booths, privacy pods, meeting booths) that reduce speech transmission and enhance privacy.
Facilitates in-situ verification of sound reduction performance following installation in finished spaces.

Product Development

Enables furniture manufacturers and suppliers to test prototypes or current models under practical field conditions, guiding improvements and compliance verification.
Useful during product development in varied environments where laboratory testing is not practical or possible.

Procurement and Quality Assurance

Buyers can request ISO 23351-2:2026 compliant acoustic test reports to ensure products meet required speech privacy standards in real-world settings.
Standardized reporting format enhances comparability between products and suppliers.

Related Standards

ISO 23351-1: Laboratory method for measuring speech level reduction in smaller test objects under controlled conditions.

ISO 3744: Engineering methods for determination of sound power levels and sound energy levels using sound pressure.

ISO 3382-2: Measurement of room acoustic parameters, including reverberation time in ordinary rooms.

IEC 60942: Specifications for sound calibrators used in acoustic measurements.

IEC 61260-1 & IEC 61672-1: Specifications for electroacoustic measurement equipment, including sound level meters and filters.

ISO 23351-2:2026 ensures consistent, accurate, and comparable assessments of speech level reduction by furniture ensembles and enclosures in diverse real-world environments. By following this international standard for acoustic measurement in field settings, organizations can better evaluate, select, and verify privacy-enhancing furniture solutions for modern workplaces and public interiors.

ISO 23351-2:2026

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

EN ISO 3744:2026

Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods f…

BS EN ISO 3382-2:2008

Acoustics. Measurement of room acoustic parameters. Reverberation time in ordinary rooms.

ISO 23351-1:2020

Acoustics — Measurement of speech level reduction of furniture ensembles and enclosures — Part 1: Laboratory…

BS EN IEC 60942:2018

Electroacoustics. Sound calibrators

IEC 61260-1:2014

Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications

IEC 61672-1:2013

Electroacoustics - Sound level meters - Part 1: Specifications