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JJF 1496-2014 English PDF

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JJF 1496-2014: Calibration Specification for Sound Source Identification and Localization Systems (Beamforming Method)
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JJF 1496-2014English399 Add to Cart 3 days [Need to translate] Calibration Specification for Sound Source Identification and Localization Systems (Beamforming Method) Valid JJF 1496-2014

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Standard similar to JJF 1496-2014

GB/T 12807   GB/Z 12414   

Basic data

Standard ID JJF 1496-2014 (JJF1496-2014)
Description (Translated English) Calibration Specification for Sound Source Identification and Localization Systems (Beamforming Method)
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard N65
Word Count Estimation 17,155
Date of Issue 11/17/2014
Date of Implementation 2/17/2015
Quoted Standard JJF 1001-2011; JJF 1034-2005; GB 3102.5; GB 3102.7; GB/T 6882-2008
Regulation (derived from) The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 No. 125
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to air the sound of a planar array of sound source identifying and positioning systems (beamforming) calibration.

JJF 1496-2014: Calibration Specification for Sound Source Identification and Localization Systems (Beamforming Method)


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Calibration Specification for Sound Source Identification and Localization Systems (Beamforming Method) People's Republic of China National Metrology Technical Specifications The sound source identifying positioning system (beamforming) Calibration Specification Systems (BeamformingMethod) Issued on. 2014-11-17 2015-02-17 implementation The State Administration of Quality Supervision, Inspection and Quarantine released The sound source identifying positioning system (beamforming) Calibration Specification Focal point. the National Committee of the acoustic measurement technology Drafting. Zhejiang Provincial Institute of Metrology Zhejiang University China Institute of Metrology Shanghai Reputation Acoustic Engineering Co., Ltd. This specification metering commissioned National Technical Committee is responsible for interpreting acoustics The main drafters of this specification. Yao Lei (Zhejiang Institute of Metrology) Huan Lu Mining (Zhejiang University) Niu Feng (China Institute of Metrology) Drafters participate. Yu wake statement (Zhejiang Institute of Metrology) Sang Shuaijun (Zhejiang Institute of Metrology) Jinjiang Ming (Zhejiang University) Wang Huan (Shanghai Reputation Acoustic Engineering Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 lateral spatial resolution (1) 3.2 Main side lobe suppression ratio (1) 3.3 positioning error (1) 4 Overview (1) 5 Metrological characteristics (1) 5.1 lateral spatial resolution (1) 5.2 primary side lobe suppression ratio (2) 5.3 positioning error (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 standards and other measuring equipment (2) 7 calibration items and calibration methods (2) 7.1 calibration items (2) 7.2 Calibration method (3) 8 calibration results expression (5) 8.1 Calibration records (5) 8.2 Calibration Data Processing (5) 8.3 calibration certificate (5) 8.4 calibration measurement uncertainty (5) 9 Recalibration interval (5) Appendix A calibration record (6) Appendix B calibration certificate (7) Appendix C Measurement Uncertainty Example (9)

Introduction

This specification prepared on the basis of rules and formats JJF 1071-2010 "National Calibration Specifications writing rules," the. The sound source identifying positioning system (beamforming) no appropriate national and international standards, norms of calibration parameters Reference number of the technical data and experimental methods corresponding to the major domestic and foreign manufacturers. This specification is the first release. The sound source identifying positioning system (beamforming) Calibration Specification

1 Scope

This standard applies to air the sound of a planar array of sound source identifying and positioning systems (beamforming) calibration. 2. References This specification references the following documents. JJF 1001-2011 common measurement terms and definitions JJF 1034-2005 acoustic measurement terminology and definitions GB 3102.5 Quantities and units of electricity and magnetism GB 3102.7 Quantities and units of acoustics Determination of sound power levels of noise sources anechoic and semi-anechoic chamber Precision method GB/T 6882-2008 Acoustics sound pressure 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

JJF 1001-2011 and JJF 1034-2005 defined and the following terms and definitions apply to this specification. 3.1 lateral spatial resolution transversespatialresolution In between the acoustic array perpendicular to the axial direction of the distinguished acoustic centers of the two sound sources minimum distance. 3.2 Main side lobe suppression ratio of main-to-sidelobeinhibitionratio In a single sound source identifying and positioning the imaging area, the main lobe and side lobe maximum sound pressure level difference. 3.3 positioning error localizationerror With acoustic array perpendicular to the axial direction, the distance of the center of the actual sound source and acoustic imaging area at the maximum sound pressure deviation.

4 Overview

The sound source identifying positioning system (hereinafter referred to as "sound source localization system") based on the measurement microphone array technology, through Microphone array particular shape, measuring the phase differences of the acoustic signal reaches the microphone and the sound waves within a certain space Amplitude, calculated by the beam forming method to the way the image shows the distribution of the sound field and the sound source in space. Sound source localization System consists of a microphone array, camera, array signal acquisition and analysis unit, and array signal analysis software group Cheng, mainly used in the sound source identification and location.

5 Metrological characteristics

5.1 lateral spatial resolution Sound Source Localization System standard sound source at 1m distance, lateral spatial resolution 1kHz center frequency of general

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