17.140.99 - Other standards related to acoustics

This document specifies the relevant characteristics and properties of hydrophones in the
frequency range 1 Hz to 500 kHz, and specifies how to report these characteristics. It does
not cover performance requirements for specific hydrophone types, or for specific hydrophone
applications. However, guidance on the choice of a hydrophone with appropriate performance
for a specific application is given in an informative annex.
This document is applicable to:
• hydrophones employing piezoelectr...view more

This document provides descriptive statistics of the hearing threshold deviation for populations
of otologically normal persons of various ages under monaural earphone listening conditions. It
specifies the following, for populations within the age limits from 18 years to 80 years for the range of
audiometric frequencies from 125 Hz to 8 000 Hz:
a) the expected median value of hearing thresholds given relative to the median hearing threshold at
the age of 18 years;
b) the expected statisti...view more

This European Standard specifies the general principles required for Leak Detection by the acoustic emission (AE) testing. The Standard is addressed to the application of the methodology on structures and components, where a leak flow as result of pressure differences appears and generates AE.
It describes phenomena of the AE generation and influence of the nature of fluids, shape of the gap, wave propagation and environment.
The different application methods, instrumentation and presentation ...view more

ISO 7029:2017 provides descriptive statistics of the hearing threshold deviation for populations of otologically normal persons of various ages under monaural earphone listening conditions. It specifies the following, for populations within the age limits from 18 years to 80 years for the range of audiometric frequencies from 125 Hz to 8 000 Hz:
a) the expected median value of hearing thresholds given relative to the median hearing threshold at the age of 18 years;
b) the expected statistical ...view more

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 %.

ISO 7235:2003 specifies methods for determining
the insertion loss, in frequency bands, of ducted silencers with and without airflow,
the sound power level, in frequency bands, of the flow noise (or regenerated sound) generated by ducted silencers,
the total pressure loss of silencers with airflow, and
the transmission loss, in frequency bands, of air-terminal units.
The measurement procedures are intended for laboratory measurements at ambient temperature. Measurements on silencers in situ...view more

Applies to loudspeakers conforming to IEC 61305-5 and intended for home use to establish standards for comparison of the sound characteristics of various loudspeakers with each other. Two test procedures are described: single stimulus ratings; paired comparisons.

Applies to measurements on silencers in practical applications for acoustic analysis, acceptance tests and similar evaluations. Depending on the method used, the measurement is either of insertion loss or transmission loss.