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JJF 1520-2015 English PDF

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US$559.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1520-2015: Calibration Specification for Head and Torso Simulator. Used in Acoustical Measurement
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1520-2015	559	Add to Cart	5 days	Calibration Specification for Head and Torso Simulator. Used in Acoustical Measurement	Valid

Similar standards

GB/T 3222.2 GB/T 3222.1 JJG 188 JJG 1190 JJF 2012 JJF 1518

Basic data

Standard ID: JJF 1520-2015 (JJF1520-2015)
Description (Translated English): Calibration Specification for Head and Torso Simulator. Used in Acoustical Measurement
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A59
Classification of International Standard: 17.140
Word Count Estimation: 24,254
Date of Issue: 2015-04-10
Date of Implementation: 2015-07-10
Quoted Standard: JJF 1001; JJF 1034; JJF 1147-2006; GB 3102.7-1993; GB/T 3947-1996; GB/T 20441.4-2006; IEC 60318-7-2011; ITU-T P.58-2013
Regulation (derived from): State Quality Inspection Administration Announcement 2015 No. 47
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This Standard applies to the acoustic with the head and torso simulator acoustic parameters of calibration.

JJF 1520-2015: Calibration Specification for Head and Torso Simulator. Used in Acoustical Measurement

---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 Head and Torso Simulator.Used in Acoustical Measurement People's Republic of China National Metrology Technical Specifications Head and Torso Simulator with acoustic calibration specification Issued on. 2015-04-10 2015-07-10 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Head and Torso Simulator with acoustic calibration specification Focal point. the National Committee of the acoustic measurement technology Drafting units. China Institute of Metrology Wuxi Jixing Automotive Parts Acoustic Technology Co., Ltd. Telecommunications Research Institute of the Ministry of Industry and Information Technology Beijing Products Quality Supervision and Inspection Institute This specification metering commissioned National Technical Committee is responsible for interpreting acoustics Drafters of this specification. Niu Feng (China Institute of Metrology) Huang Wei (Wuxi Jixing Automotive Parts Acoustic Technology Co., Ltd.) Zhong Bo (China Institute of Metrology) Zhang Xiaoxiao (Beijing Products Quality Supervision and Inspection Institute) Easy Kaohsiung (Ministry of Information Industry and Telecommunications Research Institute) Xu Huan (China Institute of Metrology) Pang Yao (Beijing Products Quality Supervision and Inspection Institute)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 and torso simulator (1) 3.2 mouth reference point (1) 3.3 Reference point and torso simulator (1) 4 Overview (2) 5 Metrological characteristics (2) 5.1 ear sensitivity level (2) 5.2 ear free field frequency response (2) Ear directivity 5.3 (3) 5.4 mouth reference point of the amplitude-frequency characteristics (3) 5.5 mouth reference point of distortion (3) 5.6 mouth free-field amplitude-frequency characteristics (3) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 Standard device and ancillary equipment (3) 7 calibration items and calibration methods (3) 7.1 calibration items (3) 7.2 Calibration method (4) 8 calibration results expression (5) 8.1 Calibration Data Processing (5) 8.2 calibration certificate (5) 8.3 Calibration of Uncertainty Evaluation (5) 9 Recalibration interval (6) Appendix A calibration certificate contents (7) Appendix B Uncertainty evaluation calibration results of examples (12)

Introduction

This specification according to the rules JJF 1002-2010 "national verification procedures to write rules" given the preparation, and "Evaluation and Expression of Uncertainty in Measurement" in accordance with the requirements of JJF 1059.1-2012 assessment and expressed measurement uncertainty. This specification with reference to the ITU-T P.58-2013 communication Head and Torso Simulator (Headandtorso simulatorfortelephonometry) part of the performance parameters and test method acoustic signal. This specification is the first release. Head and Torso Simulator with acoustic calibration specification

1 Scope

This standard applies to the acoustic head and torso simulator acoustic parameters of calibration. 2. References This specification references the following documents. JJF 1001 common measurement terms and definitions JJF 1034 acoustic measurement terminology and definitions JJF 1147-2006 anechoic and semi-anechoic chamber acoustic characteristics calibration specification GB 3102.7-1993 Quantities and units of acoustics GB/T 3947-1996 Acoustics Terminology GB/T 20441.4-2006 Measurement microphones - Part 4. Specifications for working standard microphones IEC 60318-7.2011 electric acoustic head and ear simulator - Part 7 hearing measuring head and hindquarters Dry simulator (Electroacoustics-Simulatorsofhumanheadandear-Part 7. Headandtorso simulatorforthemeasurementofhearingaids) ITU-TP.58-2013 communication Head and Torso Simulator (Headandtorsosimulatorfortele- phonometry) For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 terminology and units of measurement

This specification uses quantities and units specified in GB 3102.7-1993. GB/T 3947-1996 and JJF 1001 and as defined in the following terms and definitions apply to this specification. 3.1 and torso simulator headandtorsosimulator, HATS Used to simulate the human voice collecting and scattering on the simulator, some also have an analog sound field radiated mouth Features. [ITU-TP.58-2013, the definition 3.16] 3.2 mouth reference point mouthreferencepoint, MRP Located in the middle of the mouth at a point in front of 25mm. [ITU-TP.58-2013, the definition 3.21] 3.3 and torso simulator reference point HATSreferencepoint, HRP HATS ear about the midpoint of the line connecting the centers. [ITU-TP.58-2013, the definition 3.15] ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1520-2015_English be delivered?

Answer: Upon your order, we will start to translate JJF 1520-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1520-2015_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1520-2015_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.