GB/T 14255-2015
Household sewing machines head.Method of sound power levels of noise emitted (English Version)

Standard No.

GB/T 14255-2015

Language

Chinese, Available in English version

Release Date

2015

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 14255-2015

Replace

GB/T 14255-1993

Scope

This standard specifies the method for calculating the sound power level by measuring the sound pressure level on the measurement surface of a phantom enveloped household sewing machine head in a free-field acoustic test environment above a reflecting plane. This standard applies to the test of the sound power level of the head noise of household sewing machines.

GB/T 14255-2015 Referenced Document

• GB 3102.7-1993 Quantities and units of acoustics
• GB/T 3241-2010 Electroacoustics.Octave-band and fractional-octave-band filters
• GB/T 3947-1996 Acoustical terminology
• JJG 176-2005 Sound Calibrators
• JJG 188-2002 Verification Regulation of Sound Level Meters*， 2024-04-20 Update

GB/T 14255-2015 history

• 2015 GB/T 14255-2015 Household sewing machines head.Method of sound power levels of noise emitted
• 1993 GB/T 14255-1993 Method of sound power levels of noise emitted by household sewing machine head