JJF 1142-2006

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JJF 1142-2006	English	409	Add to Cart	3 days	Calibration specification for building acoustic	JJF 1142-2006	Valid	JJF 1142-2006

JJF 1142-2006
Calibration specification for building acoustic
National Metrology Technical Specification of the People's Republic
Building Acoustics Analyzer Calibration Specifications
Released on.2006-05-23
Implementation of.2006-08-23
The General Administration of Quality Supervision, Inspection and Quarantine issued
Building Acoustics Analyzer Calibration Specifications
Zers
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on May 23,.2006, and
Implemented on August 23,.2006.
Focal Point. National Acoustic Metrology Technical Committee
Drafting unit. Hubei Institute of Metrology and Testing Technology
This specification entrusts the National Acoustic Metrology Technical Committee to explain
The main drafters of this specification.
Yao Qiuping (Hubei Institute of Metrology and Testing Technology)
Participate in the drafters.
Shi Gengen (Hubei Institute of Metrology and Testing Technology)
Luo Yaqing (Hubei Institute of Metrology and Testing Technology)
Tao Lijun (Hubei Institute of Metrology and Testing Technology)
table of Contents
1 range (1)
2 Citations (1)
3 terms and units of measurement (1)
4 Overview (1)
5 Metrology performance (1)
5.1 Spectrum Analysis Features (1)
5.2 Reverberation time (2)
5.3 Sound pressure level measurement part (2)
5.4 Signal source characteristics (2)
6 Calibration conditions (2)
6.1 Environmental conditions (2)
6.2 Standard and other equipment (3)
7 Calibration items and calibration methods (3)
7.1 Calibration Project (3)
7.2 Calibration method (4)
8 calibration result expression (6)
8.1 Calibration Data Processing (6)
8.2 Calibration Certificate (7)
8.3 Calibration results uncertainty assessment (7)
9 re-study interval (7)
Appendix A Calibration Certificate Contents (8)
Appendix B Architectural Acoustics Analyzer Reverberation Time Measurement Uncertainty Analysis Example (11)
Building Acoustics Analyzer Calibration Specifications
1 Scope
This specification applies to the calibration of architectural acoustic analyzers.
2 Citations
This specification refers to the following documents.
GB/T 3102.7-1993 "Amount and unit of acoustics"
GB/T 3241-1998 "octave and fractional octave filter"
GB/T 3947-1996 "Acoustic terminology"
GB/T 4129-2003 "Standard Sound Source"
JJF 1001-1998 General Terms and Definitions
JJF 1059-1999 "Measurement Uncertainty Evaluation and Representation"
JJG188-2002 "Sound Level Meter"
JJG277-1998 "Standard Sound Source"
JJG449-2001 "octave and 1/3 octave filter"
JJG607-2003 "Audio Signal Generator"
Use of this specification should be done with the current valid version of the above cited documents.
3 terms and units of measure
This specification uses the relevant terms and definitions in JJF 1001-1998 and the provisions of GB/T 3102.7-1993.
The amount and unit.
4 Overview
The building acoustic analyzer is an instrument that measures the basic parameters of building acoustics such as reverberation time and band sound pressure level. building
Acoustic analyzers are widely used for the measurement of room reverberation time and the measurement of acoustic properties such as material sound absorption and sound insulation. Building sound
The analyzer is usually composed of spectrum analysis, band sound pressure level measurement, reverberation time measurement, sound source, etc.
Building acoustic analyzer without sound source part, excitation sound by external pulse sound (such as starting gun, electric spark, etc.), broadband noise
The sound source is completed (such as a noise generator).
5 Measurement characteristics
5.1 Spectrum Analysis Features