Buller med avseende på människor

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 14 mar 2020
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This document specifies methods for recording the time history of the sound pressure produced by shooting with calibres of less than 20 mm or by detonation of explosive charges of less than 50 g TNT equivalent in locations within the shooting range. The location of the measurement can be the position of the shooter or any person in the shooting range. The time history of the sound pressure can be the basis for further analyses of exposure of persons to these kinds of sounds.

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 13 apr 2020
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This document applies to all open-plan offices, in which the following activities are performed:

— Space type 1: when the activity isn’t known yet – vacant floor plate;

— Space type 2: activity mainly focusing on outside of the room communication (by telephone/audio/video);

— Space type 3: activity mainly based on collaboration between people at nearest workstation;

— Space type 4: activity based on a small amount of collaborative work;

— Space type 5: activity which may involve receiving the public;

— Space type 6: combining activities within the same space.

It is a guide to support technical dialogue and formal commitment between the various stakeholders involved in the planning, design, construction or layout of open-plan workspaces: end customers, project owners, prescribers, consultants, etc.

More specifically, it applies to refitting projects of existing business sites (renovation and/or change or add activities) and layout projects for new spaces and spaces delivered unfurnished.

This document covers all activities and applies to the operations of the following stakeholders:

— end customer: diagnosis, survey, expression of needs in keeping with his knowledge in the area of acoustics;

— project owner: drafting contract specifications;

— project management companies (architects, acousticians, ergonomists, economists and consulting engineers): indicating the performance of acoustic solutions and the layout principles used to achieve the result expressed in the specifications;

— building trade: reaching a clear and verifiable target with respect to the choices of materials and implementation;

— promoter: promoting acoustic comfort in estate operations in order to use it as a competitive element;

— specialists in occupational health, safety and quality;

— expert assessments and consultancy.

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 24 apr 2020
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This part of ISO 389 specifies the following data applicable to the calibration of bone vibrators for puretone

bone-conduction audiometry:

a) reference equivalent threshold vibratory force levels (RETVFL), corresponding to the threshold of

hearing of young otologically normal persons by bone-conduction audiometry;

b) essential characteristics of the bone vibrator and the method of coupling to the test subject, and to

the mechanical coupler;

c) essential characteristics of the masking noise and the baseline masking noise level applied to the

ear not under test.

Guidance on the practical application of this part of ISO 389 in the calibration of audiometers is

given in Annex B.

RETVFL is the vibratory force level transmitted to a mechanical coupler of specified characteristics by a

vibrator when applied to the mechanical coupler under stated conditions of test and when energized at the

voltage level corresponding to the normal threshold of hearing for location on the mastoid prominence.

NOTE 1 Values for the differences in reference equivalent threshold vibratory force levels between location on

the forehead and mastoid are included for information in Annex C.

NOTE 2 Recommended procedures for carrying out bone-conduction audiometry are specified in ISO 8253‑1.