JJF 1191-2008 Replaced National Metrology Technical Specifications JJF

JJF 1191-2008 Calibration Specification for Acoustic Performance of Audiometry Rooms

Publish Date: 2008-03-24 Implement Date: 2008-06-24 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJF 1191-2008

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2008-03-24

Implement Date: 2008-06-24

Pages: 24 pages

Scope

This standard specifies the measurement method for the acoustic characteristics of the sound field in an audiometry room.
This audiometry room is suitable for hearing threshold checks using pure tones, FM tones, narrowband noise, or recorded language materials, with air-conduction headphones, speakers, or bone vibrators as sound emitters.
The main purpose is to ensure the accuracy and reproducibility of audiometry results when determining the hearing threshold in a frequency range of 125Hz to 125kHz.
This standard is also applicable to the measurement of the acoustic characteristics of audiometry rooms used for measuring otoacoustic emissions and auditory evoked potentials.