SIST EN ISO 11957:2009 PDF

Name: SIST EN ISO 11957:2009 — Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements (ISO 11957:1996)
SKU: SIST EN ISO 11957:2009
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Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements (ISO 11957:1996)

Название (английский):

SIST EN ISO 11957:2009

Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements (ISO 11957:1996)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 20
Дата публикации:: 13 октября 2009 г.
ICS:: 17.140.01
Технический комитет:: AKU - Acoustics

Тип поставки:

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Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:300 €

Описание (английский):

Describes a laboratory method and in situ methods for the determination of the sound insulation performance of sound-protecting cabins. Applicable to sound-protecting cabins with a leak ratio smaller than 2 %.

Abstract

Overview

Key topics and requirements

Scope and definitions: Terms such as cabin, sound pressure level (Lp), internal noise level (Lp,A), leak ratio and reverberant sound field are defined to ensure consistent measurement and reporting.
Test environment selection: Laboratory conditions follow guidance related to reverberation rooms; in situ tests address realistic external sound fields.
Instrumentation and calibration: Use of sound level meters, calibrators and octave/third‑octave filters in accordance with referenced IEC/ISO instrument standards is required.
Laboratory measurements (Clause 6):
- Cabin mounting, location and boundary conditions specified.
- Measurement of sound pressure levels outside (reverberant room) and inside the cabin to compute Dp.
In situ measurements (Clause 7):
- Microphone placement inside and outside cabin, handling of non‑diffuse fields and computation of apparent insulation (Dpa).
Derived metrics:
- Apparent A‑weighted insulation (Dpa,A) and weighted single‑number insulation (Dpw) for simplified comparison and rating (per ISO 717‑1 method).
- Estimated cabin noise insulation for a specified noise spectrum (Annex A).
Uncertainty and reporting:
- Clause on measurement uncertainty and detailed information to record and report (test object, conditions, instrumentation, acoustical data).
Regulatory linkage:
- Informative annexes (ZA, ZB) explain relationships with EU Directives (e.g., machinery directives) for conformity assessment.

Applications and who uses it

Acoustic engineers and test laboratories performing certified sound insulation tests on operator booths, machine enclosures, control cabins, recording booths and similar sound‑protecting cabins.
Manufacturers verifying product noise attenuation performance during development or for conformity claims.
Compliance officers and certification bodies assessing conformity with EU directives and national standards.
Facility designers specifying cabins for industrial, transportation or broadcast applications where internal noise control is critical.

Related standards

ISO 11957 (ISO original text, 1996)
ISO 11546‑1 / ISO 11546‑2 (noise attenuation of enclosures)
ISO 3741 (reverberation room sound power methods)
ISO 717‑1 (rating of airborne sound insulation)
Relevant IEC/ISO instrument standards (sound level meters, filters, calibrators)

Keywords: EN ISO 11957:2009, sound insulation, acoustics, cabins, laboratory measurements, in situ measurements, leak ratio, sound pressure level, A‑weighted insulation.

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SKU: SIST EN ISO 11957:2009

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ISO 11957:1996

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Acoustics — Determination of sound insulation performance of cabins — Laboratory and in situ measurements

Overview ISO 11957:1996 - "Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements" specifies methods to measure how effectively sound‑protecting cab…

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SIST EN ISO 11546-1:2009

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SIST EN ISO 11546-2:2009

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BS EN ISO 3741:2010

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SIST EN ISO 11957:2009 PDF

Abstract

Overview

Похожие стандарты

Key topics and requirements

Applications and who uses it

Related standards

Технические детали

ISO 11957:1996

Acoustics — Determination of sound insulation performance of cabins — Laboratory and in situ measurements

SIST EN ISO 717-1:2021

Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulat…

SIST EN ISO 11546-1:2009

Acoustics - Determination of sound insulation performances of enclosures - Part 1: Measurements under laborat…

SIST EN ISO 11546-2:2009

Acoustics - Determination of sound insulation performances of enclosures - Part 2: Measurements in situ (for…

BS EN ISO 3741:2010

Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure.…