GB/T 20247-2006 Active National standards

GB/T 20247-2006 Acoustics—Measurement of sound absorption in a reverberation room

GB/T 20247-2006 Acoustics—Measurement of sound absorption in a reverberation room

Publish Date: 2006-05-08 Implement Date: 2006-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 20247-2006

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Acoustic metrology

ICS Name: Acoustics and acoustic measurement

Publish Date: 2006-05-08

Implement Date: 2006-11-01

Pages: 21 pages

Scope

This standard specifies the method for measuring the sound absorption coefficient of acoustic materials used to treat walls or ceilings, or the sound absorption quantity of objects such as furniture, people, and spatial sound absorption bodies, in a reverberation chamber. This method is not suitable for measuring the sound absorption characteristics of low-damping resonators. The measurement results can be used for data comparison and design calculations related to indoor acoustics and noise control.

Development Information

Word Count: 38 Thousand words Pages: 21 pages

Referenced Standards

GB/T 3240-1982 Preferred frequencies for the acoustical measurement GB/T 3241-1998 Octave-band and fractional-octave-band filters GB/T 3241-2010 Electroacoustics—Octave-band and fractional-octave-band filters GB/T 17247.1-2000 Acoustics—Attenuation of sound during propagation outdoors—Part 1:Calculation of the absorption of sound by the atmosphere GB/T 3241.2-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 2:Pattern evaluation tests GB/T 3241.1-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 1:Specifications

Adopt standards

ISO 354:2003

Related Standards

GB/T 3238-1982 Active

GB/T 3238-1982 Acoustical levels and refrence quantities

Publish Date: 1982-06-08

GB/T 3240-1982 Active

GB/T 3240-1982 Preferred frequencies for the acoustical measurement

Publish Date: 1982-06-08

GB/T 3785-1983 Replaced

GB/T 3785-1983 Electric, sonic properties and measuring methods for sound level meters

Publish Date: 1983-06-25

GB/T 5265-1985 Replaced

GB/T 5265-1985 Measurement of underwater noise

Publish Date: 1985-07-26

GB/T 7966-1987 Replaced

GB/T 7966-1987 Acoustics—Ultrasonic power measurement in the frequency range 0.5～10MHz

Publish Date: 1987-06-22

GB/T 11452-1989 Abolished

GB/T 11452-1989 Guide to hearing aid standards

Publish Date: 1989-07-04