JJG 449-2014
Octave-Band and Fractional-Octave-Band Filters (English Version)

Standard No.

JJG 449-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

National Metrological Verification Regulations of the People's Republic of China

Latest

JJG 449-2014

Scope

This procedure is applicable to the initial calibration, subsequent calibration and in-use inspection of 1st and 2nd octave filters and fractional octave filters in the audio frequency range.

JJG 449-2014 history

• 2014 JJG 449-2014 Octave-Band and Fractional-Octave-Band Filters
• 2001 JJG 449-2001 Verification Regulation of Octave-Band and One-Third-Octave Band Filters