ISO 9614-1:1993

Name: ISO 9614-1:1993 — Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
SKU: ISO 9614-1:1993
Price: 25 EUR
Availability: InStock

Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points

Название (английский):

ISO 9614-1:1993

Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 19
Дата публикации:: 3 июня 1993 г.
Издание:: ISO IS 9614 edition 1 version 1
ICS:: 17.140.01

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined. The one-octave, one-third-octave or band-limited weighted sound power level is calculated from the measured value. The method is applicable in situ or in special purpose test environments to any source for which a physically stationary measurement surface can be defined, and on which the noise generated by the source is stationary in time.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 9614-1:1993 - "Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points" - specifies a standardized method to determine the sound power radiated by a noise source by measuring the normal component of sound intensity on a hypothetical surface enclosing the source. Measurements are taken at discrete points (one-octave or one‑third‑octave bands) and used to compute octave, one‑third‑octave or band‑limited A‑weighted sound power levels. The method is applicable in situ or in special test environments for sources with stationary noise and a physically definable measurement surface.

Key topics and requirements

Measurement principle: Sound power is obtained by integrating the normal sound intensity over a surface that fully encloses the source - i.e., summing partial sound powers from discrete surface segments.

Frequency ranges: One‑third‑octave band measurements are supported in practice from about 50 Hz to 6.3 kHz; one‑octave band data commonly from 63 Hz to 4 kHz. A‑weighted values are calculated from band results, not measured directly.

Instrumentation & probes: Use of calibrated sound intensity probes and instrumentation compliant with IEC/ISO requirements; attention to probe orientation and dynamic capability.

Acoustic environment: The method tolerates more realistic (less restricted) test conditions than pressure‑based standards but requires stationarity of the source and control of extraneous noise and airflow (effects covered in annexes).

Quality indicators & uncertainty: The standard defines grades of accuracy (e.g., precision, engineering, survey) and ancillary tests (annex B) and field indicators (annex A) used to assess measurement quality and estimate uncertainty.

Practical considerations: Guidance on installation, surface segmentation, measurement positions, and factors that bias results (airflow, absorption within the measurement surface - annexes C and D).

Applications and who uses it

Acoustical consultants and test laboratories performing in situ sound power determinations of machinery and installations.

Manufacturers and product engineers measuring noise emissions of large or installed equipment that cannot be tested in anechoic or calibrated reverberant rooms.

Environmental noise assessors and occupational hygienists evaluating sound power for noise control, compliance, and mitigation design.

Use cases include field measurement of compressors, motors, HVAC systems, industrial machinery and other sources where traditional pressure‑based laboratory methods are impractical.

Related standards

ISO 9614 (Part 2: measurement by scanning)

ISO 3740–3747 series (pressure‑based sound power methods)

IEC 1043 (instruments for sound intensity)

ISO 5725 (precision of test methods)

Keywords: ISO 9614-1:1993, sound intensity measurement, sound power levels, measurement at discrete points, in situ acoustics, one‑third‑octave, A‑weighted sound power.

ISO 9614-1:1993

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and who uses it

Related standards

Технические детали

ISO 9614-3:2002

Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 3: Precision me…

ISO 5725-1:2023

Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definit…

ISO 8212:1986

Soaps and detergents — Techniques of sampling during manufacture

ISO 20662:2020

Ships and marine technology — Hopper dredger supervisory and control systems

ISO 3021:2023

Adventure tourism — Hiking and trekking activities — Requirements and recommendations

ISO 3826-2:2008

Plastics collapsible containers for human blood and blood components — Part 2: Graphical symbols for use on l…

ISO/IEC 24730-1:2014

Information technology — Real-time locating systems (RTLS) — Part 1: Application programming interface (API)

ISO 8668-5:1992

Aircraft — Terminal junction systems — Part 5: Detail specification for type 3 system