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JJF 1288-2011 English PDF

US$599.00 · In stock
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JJF 1288-2011: Calibration Specification for Multi-Channels Sound Analyzers
Status: Valid

JJF 1288: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1288-2011	English	599	Add to Cart	5 days [Need to translate]	Calibration Specification for Multi-Channels Sound Analyzers	Valid	JJF 1288-2011
JJF 1288-1990	English	199	Add to Cart	2 days [Need to translate]	O.T.N. for Alternating Voltage Primary Standard from 40Hz to 15000Hz	Obsolete	JJF 1288-1990

PDF similar to JJF 1288-2011

Standard similar to JJF 1288-2011

GB/T 3222.2 GB/T 3222.1 JJG 188 JJF 1289 JJF 1294 JJF 1278

Basic data

Standard ID	JJF 1288-2011 (JJF1288-2011)
Description (Translated English)	Calibration Specification for Multi-Channels Sound Analyzers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A59
Classification of International Standard	17.140
Word Count Estimation	26,246
Date of Issue	2011-06-14
Date of Implementation	2011-09-14
Quoted Standard	JJF 1001-1998; JJF 1059-1999; JJF 1142-2006; JJF 1157-2006; JJG 176-2005; JJG 188-2002; JJG 199-1996; JJG 607-2003; GB 3102.7-1993; GB 3240-1982; GB/T 3947-1996
Regulation (derived from)	AQSIQ Announcement No. 90 of 2011
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard specifies the multi-channel audio analyzer measurement characteristics, calibration conditions and calibration methods. This standard applies to multi-channel sound with acoustic measurement analyzer calibration.

JJF 1288-2011: Calibration Specification for Multi-Channels Sound Analyzers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Multi-Channels Sound Analyzers People's Republic of China National Metrology Technical Specifications Multi-channel audio analyzer calibration specification Issued on. 2011-06-14 2011-09-14 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Multi-channel audio analyzer calibration specification zers This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on June 14, 2011, and from From September 14, 2011 into effect. Focal point. the National Committee of the acoustic measurement technology Drafting units. China Institute of Metrology Guangzhou Institute of Measurement and Detection Beijing Institute of Metrology detection Zhejiang Institute of Metrology This specification by the responsible National Technical Committee acoustic measurement interpretation Drafters of this specification. Niu Feng (China Institute of Metrology) He Longbiao (China Institute of Metrology) Bai Ying (China Institute of Metrology) Lun Zhou Bin (Guangzhou Institute of Measurement and Detection) Zhang Hongyu (Beijing Institute of Metrology detection) Wei (Beijing Institute of Metrology detection) Qiu Jianmin (Zhejiang Institute of Metrology)

1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 sensitivity of the machine (1) 5.2 frequency weighting and frequency response (2) 5.3 Linear (3) 5.4 self-noise (3) 5.5 Time weighting F and S (3) 5.6 audio should burst (4) 5.7 audio should be repeated bursts (4) Crosstalk 5.8 (4) 5.9 Channel Consistency (4) 5.10 reverberation time (4) 5.11 amplitude-frequency characteristics of the output signal (4) Frequency error signal output of 5.12 (4) 5.13 The magnitude of the error signal output (4) 5.14 total distortion of the output signal (4) 5.15 white noise and pink noise spectral characteristics of the output signal (5) 6 calibration conditions (5) Environmental conditions 6.1 (5) 6.2 Standard device and ancillary equipment (5) 7 calibration items and calibration methods (6) 7.1 calibration items (6) 7.2 Calibration method (6) Expression 8 calibration results (10) 8.1 Calibration data processing (10) 8.2 calibration certificate (11) 8.3 Evaluation of Uncertainty of calibration results (11) 9 Recalibration interval (11) Appendix A calibration certificate (12) Appendix B Uncertainty evaluation calibration results of examples (16) Multi-channel audio analyzer calibration specification

1 Scope

This specification defines the metrological characteristics of multi-channel sound analyzer calibration conditions and calibration methods. This instruction applies to acoustic measurements multichannel sound analyzer calibration.

2 Citations

This specification references the following documents. JJF 1001-1998 common measurement terms and definitions JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF 1142-2006 building acoustics analyzer calibration specification JJF 1157-2006 measuring amplifier calibration specification JJG176-2005 sound calibrators JJG188-2002 Sound Level Meter JJG199-1996 burst tone signal source JJG607-2003 audio signal generator GB 3102.7-1993 Quantities and units of acoustics GB 3240-1982 acoustical measurement commonly used frequency GB/T 3947-1996 Acoustics Terminology When using this specification it should be noted that using the currently valid version of the documents cited.

3 terminology and units of measurement

3.1 specification uses GB/T 3947-1996, JJF 1001-1998, JJG188-2002 and JJG607- 2003 as defined in the terms and definitions. 3.2 specification uses quantities and units specified in GB 3102.7-1993.

4 Overview

Multi-channel audio analyzer means more channels can be analyzed acoustic testing equipment at the same time, and with a range of software Measurement and analysis can be combined with a variety of acoustic parameters, it has been widely used in the field of acoustic testing, the main By the microphone, a preamplifier, a signal input module, a signal processing module and display module, part of the analyzer also Comprising signal output module. Multi-channel audio analyzer can simultaneously capture multiple channels of sound to signal analysis and processing, and is able to Data storage and output.

5 Metrological characteristics

5.1 sensitivity of the machine

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