Anechoic Chamber Standards

Describes simplified procedures for the determination of the sound power levels of a hydraulic fluid power pump under controlled conditions of installation and operation using a quadrispherical microphone array in an anechoic chamber. These procedures provide a basis for comparing...

This SAE Standard presents a test procedure for determining the airborne sound insulation performance of materials and composite layers of materials commonly found in mobility, industrial, and commercial products under conditions of representative size and sound incidence so as to allow better...

ISO 362-3:2016 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber. The specifications are intended to achieve an acoustical correlation between testing the exterior noise of road vehicles in a semi...

This part of ISO 362 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber. The specifications are intended to achieve an acoustical correlation between testing the exterior noise of road vehicles in a...

Describes a series of recommended techniques which are designed to enable reliable measurements of hydraulic pump and motor airborne noise to be taken using an anechoic chamber, in accordance with Parts 1 and 2 of this standard.

This guide provides information on construction of radiated emission test facilities in the frequency range of 30 MHz to 40 GHz. Standardized site validation methods above 18 GHz remain unavailable at present, however the changes in this edition are considered appropriate guidance for use up to 40...

This Standard specifies the measurement methods for the reflectivity of electromagnetic wave absorbers (EMA) for the normal incident, oblique incident and each polarized wave in the millimetre-wave range. In addition, these methods are also equally effective for the reflectivity measurement of...

This information report gives typical requirements for an anechoic chamber in which the system susceptibility of an operating motor vehicle to electromagnetic fields can be determined in the frequency range of 20 MHz to 18 GHz. Because of the large cone sizes required for 20 MHz...

General This American National Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field...

The purpose of this recommended practice is to recommend realistic and repeatable criteria, as well as recommended test methods, to characterize the absorption properties of typical anechoic chamber linings applied to a metallic surface. This recommended practice covers the parameters...

Vehicle electrical/electronic systems may be affected when immersed in an electromagnetic field generated by sources such as radio and TV broadcast stations, radar and communication sites, mobile transmitters, cellular phones, etc. Reverberation method is used to evaluate the immunity of electronic...

This standard specifies a procedure for calculating the monaural and binaural loudness experienced by listeners with normal hearing under the following conditions: Listening conditions. The standard applies to three listening conditions: free field with a frontal incidence, diffuse field, or...

This document describes equipment inspection and radio frequency (rf) electromagnetic field measurement procedures for evaluation of rf industrial, scientific, and medical (ISM) equipment installed in the user's facility. The term, "ISM equipment," as used here, includes equipment that generates rf...