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GB/T 12060.5-2011: Sound system equipment -- Part 5: Methods of measurement for main characteristics of loudspeakers
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Sound system equipment -- Part 5: Methods of measurement for main characteristics of loudspeakers
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GB/T 12060.5-2011
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Basic data | Standard ID | GB/T 12060.5-2011 (GB/T12060.5-2011) | | Description (Translated English) | Sound system equipment -- Part 5: Methods of measurement for main characteristics of loudspeakers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | M70 | | Classification of International Standard | 33.160.50 | | Word Count Estimation | 48,492 | | Date of Issue | 2011-10-31 | | Date of Implementation | 2012-02-01 | | Older Standard (superseded by this standard) | GB/T 9396-1996 | | Quoted Standard | GB/T 3241, GB/T 3767, GB/T 3769, GB/T 3785.1, GB/T 6881.1, GB/T 6882, GB/T 12060.2-2011, GB/T 12060.3-2011, GB/T 15212, SJ/Z 9140.1, IEC 60050-151, IEC 60268-14, IEC 60268-11-1987 | | Adopted Standard | IEC 60268-5-2007, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 15 of 2011 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard applies to the sound system speakers, entirely as passive components to deal with, do not include speaker system with built-in amplifier. | GB/T 12060.5-2011: Sound system equipment -- Part 5: Methods of measurement for main characteristics of loudspeakers
---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.
Sound system equipment Part 5. Methods of measurement for main characteristics of loudspeakers
ICS 33.160.50
M70
National Standards of People's Republic of China
Replacing GB/T 9396-1996
Sound system equipment
Part 5. Methods for measuring performance main speaker
Part 5. Methodsofmeasurementformaincharacteristicsofloudspeakers
(IEC 60268-5.2007, IDT)
Issued on. 2011-10-31
2012-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 1
3 Measurement Condition 2
3.1 General Condition 2
3.2 Measurement Condition 2
4 measurement signal 2
4.1 Overview 2
4.2 sinusoidal signal 2
4.3 broadband noise signal 2
4.4 narrowband noise signal 3
4.5 pulse signal 3
5 3 acoustic environment
5.1 Overview 3
5.2 free-field conditions 3
5.3 half-space free-field conditions 3
5.4 Diffusion field conditions 3
5.5 simulated free-field conditions 3
5.6 analog half-space free-field conditions 4
6 unwanted acoustic noise and electrical noise 4
7 speakers and microphone position measurement 4
7.1 measured under free-field and half-space free-field conditions from the 4
Location 7.2 under diffuse field conditions the speaker 4
7.3 under simulated conditions of free-field position of the speaker and microphone 4
8 5 measuring equipment
9 acoustic measurement accuracy of 5
10-speaker setup 5
Harmony 10.1 installation speaker unit load 5
Install acoustic speaker system load 5 10.2
11 standard and measurement baffle box 6
11.1 Standard baffle 6
11.2 standard measurement tank 6
12 6 pre-load processing
13 Category Description 7
13.1 Overview 7
13.2 speaker unit 7
13.3 7 speaker system
14 identifies the terminal and the controller 7
14.1 Overview 7
14.2 cathode 7
15 reference surface, the reference point and the reference axis 7
15.1 --- reference surface characteristics explain 8
Reference point --- 15.2 Characteristics Explanation 8
15.3 --- characteristics explain the reference axis 8
16 characteristic impedance and its derivatives 8
16.1 Rated impedance characteristics explain --- 8
16.2 impedance curve 8
16.3 Total quality factor (Qt) 8
16.4 speaker unit compliant equivalent air volume (Vas) 9
17 input voltage 10
17.1 Rated noise voltage 10
17.2 Short-term maximum input voltage 11
17.3 Long-term maximum input voltage 11
17.4 Rated sinusoidal voltage 12
Input power 18 12
18.1 Rated noise power --- characteristics explain 12
18.2 Short-term maximum power --- characteristics explain 12
18.3 Long-term maximum power --- characteristics explain 12
18.4 --- rated sinusoidal power characteristics explain 12
Frequency characteristic 19 12
19.1 --- rated frequency range characteristics explain 12
19.2 resonant frequency 13
19.3 tuning frequency inverter type or passive radiator loudspeaker system --- characteristics explain 13
Sound pressure field and 13 of 20 free half-space free-field conditions
13 20.1 Sound pressure within a specified frequency band
SPL --- 20.2 Characteristics explanation within a specified frequency band 14
20.3 specified frequency band characteristic sensitivity 14
20.4 Characteristics of sensitivity level designated band characteristics explain 14 ---
20.5 average sound pressure within a specified frequency band 14
--- 20.6 average sound pressure level characteristic within a specified band interpretation 14
14 response under free-field conditions for 21 and half-space free-field
21.1 Frequency response 14
21.2 Effective frequency range 15
15 21.3 Transfer Function
22 output power (acoustic power) 16
22.1 band sound power 16
22.2 average sound power within a specified frequency band 17
Efficiency 22.3 17 within a specified frequency band
The average efficiency of 22.4 specified frequency band 17
23 18 directional characteristics
23.1 directivity pattern 18
Radiation angle 18 23.2
23.3 index points to 18
23.4 coverage angle (including multiple) 19
24 non-linear amplitude 20
24.1 Total Harmonic Distortion 20
24.2 n-order harmonic distortion (n = 2 or 3) 21
24.3 harmonic distortion characteristics of 22
Modulation distortion 24.4 n times (n = 2 or 3) 22
24.5 n modulation distortion characteristic times (n = 2 or 3) 22
24.6 difference frequency distortion (secondary only) 23
25 23 rated environmental conditions
25.1 Temperature range 23
25.2 relative humidity range 23
26 stray magnetic field 24
26.1 stationary component 24
26.2 dynamic component 24
27 Physical Characteristics 25
27.1 Size 25
25 27.2 Quality
25 27.3 Cable Accessories
28 25 Design Data
Flag characteristics specified 25 29
Appendix A (Informative Appendix) A Standard measuring tank 32
Appendix B (Informative Appendix) B-type standard measurement box 34
Terms Appendix C (informative) for the definition of Chapter 13 37
Annex D (informative) listening test 39
References 40
1 speaker impedance curve 9
Figure 2 standard baffle, size 28
Figure 3 beveled standard baffle 29
4 standard baffles 29 minutes with a baffled
Figure 5 Class A standard measurement box 30
Figure 6 Class B measurement box 30
Figure 7 a block diagram of the test equipment 31
8 stray magnetic field measurement device 31
Figure A.1 A Standard measuring tank Example 32
Figure A.2 from the free field to the half-space free-field, standard measurement cabinet diffraction effect correction curve 33
Figure A.3 from the free field to the half-space free-field, standard measurement cabinet diffraction effect correction curve 33
Figure B-type standard measurement B.1 Case Example 34
Figure B.2 B-type scalable measurement box structure 35
Figure B.3 from the free field to the half-space free-field, standard measurement cabinet diffraction effect correction curve 36
Figure B.4 from the free field to the half-space free-field, standard measurement cabinet diffraction effect correction curve 36
Characteristics specified in Table 1 marked 26
Table B.1 B-type scalable measurement box dimensions and proportions 35
Foreword
GB/T 12060 "Sound system equipment" is divided into the following sections.
--- Part 1. General;
--- Part 2. General method of calculation and interpretation of the term;
--- Part 3. audio amplifier measurement methods;
--- Part 4. Methods of measurement microphones;
--- Part 5. Methods for measuring performance main speaker;
--- Part 6. Auxiliary passive components;
--- Part 7. Headphones measurement methods;
--- Part 8. AGC device;
--- Part 9. Artificial reverberation, time delay and frequency shift measurement means;
--- Part 10. Peak program level meters;
--- Part 11. Sound system equipment connectors for the interconnection of the application;
--- Part 12. Radio and with similar sound system connected applications;
--- Part 13. speaker listening tests;
--- Part 14. Circular and oval speaker, shape and installation dimensions;
--- Part 16. the speech transmission index (STI) objective assessment of the level of speech intelligibility;
--- Part 17. Standard volume tables;
--- Part 18. Peak program level meters - Digital audio peak level meter.
This part of GB/T 12060 Part 5.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses the translation method is equivalent to using IEC 60268-5.2007 "Sound system equipment - Part 5. Loudspeakers" (in English).
For ease of use, this section made the following editorial changes.
a) instead of as a decimal by decimal comma ",". ",";
b) Remove IEC 60268-5.2007 Foreword;
c) 7 is a block diagram of the test equipment "filter network" and "Speaker" represented by the dashed box and labeled "speaker unit or speakers
system";
d) in FIG. 8 Fluxmeter to Tesla meter.
This part is GB/T 9396-1996 "The main speaker performance testing methods" amendments.
Section compared with GB/T 9396-1996 The main changes are as follows.
a) 4.1 "measured signal", 5.1 "acoustic environment", asked to indicate the measurement results;
b) 11.2 "standard measurement box";
c) Remove the previous version in Chapter 17, "pure tone hearing check," added 17.1.3 "listening test normal work," 17.4.3 "mechanical noise listening
Inspection (cackle) ";
d) 16.2 impedance curve measurement, the former version of "constant method is generally preferred" to "constant voltage method is generally preferred";
e) 17.1 Requirements "amplifier should have the ability to supply non-peak voltage clipping of a sinusoidal signal of the speaker. The peak voltage to
Is less noise voltage test twice. "Former version requirements" amplifier should be able to at least twice the speaker speakers Rated positive
Sinusoidal voltage sinusoidal signal ";
f) Chapter 18, "input power", remove the measurement provisions; 18.4 US predetermined rated sinusoidal voltage, the provisions of the previous version 20.3
US is the maximum sinusoidal voltage;
g) Chapter 19, "frequency characteristics", the "resonant frequency" carve item "Unit" and "system" two paragraphs; the other columns 19.3 "vented or no
Radiation source speaker system tuning frequency ";
h) 20.1, the amended 22.1.1 will "sound pressure" misprints "voltage" errors the previous version;
i) 21.1.2.3a), and fed to the speaker pink noise signal is limited to the effective frequency range;
j) increased 21.1.3 "low frequency measurement correction";
k) 23.4 "coverage angle (including multiple)";
l) to Chapter 24, "the magnitude of the nonlinear", Chapter 9 12060.2 consistent with GB/T ;
m) increased 24.1.3 "higher than the rated input voltage measuring method sinusoidal voltage";
n) Remove the previous version 26.5 "total noise distortion", 26.6 "n order noise distortion", 26.7 "characteristic of noise distortion"; 24.4 "n times the modulation loss
True "in the amended version before the leak wrote" f2 ± f1 ";
o) 24.6 supplemented with "difference frequency distortion" of the content; delete the previous version 26.11 "intermodulation noise";
p) Chapter 26, "stray field", including static and dynamic components, the first version of the static and cross into points; test specified distance from the previous version
Different; delete the previous version 27.2 "Note. use a permanent magnet speakers, usually divided into a cross does not make sense, but the exciting Young
Microphone cross is divided into meaningful ";
q) Chapter 28 "design data", adding "voice coil turns; coil length; magnetic gap height; the maximum stroke Xp-p";
r) increase the informative Appendix A, Appendix B, Appendix C, Appendix D; delete the previous version of Appendix A (informative annex);
s) of this section reg number and IEC 60268-5.2007 "Sound system equipment - Part 5. Loudspeakers" (English Version) consistent.
This Part replaces GB/T 9396-1996 "The main speaker performance test methods."
This part is proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part of the National Audio, video and multimedia systems and equipment Standardization Technical Committee (SAC/TC242) centralized.
This part mainly drafted by. Jiangsu Electronic Information Products Quality Supervision and Inspection Institute, Nanjing University Institute of Acoustics, Guoguang Electric
CO., LTD.
The main drafters of this section. Zhang Zhiqiang, Shen Yong, Yu Jin-yuan, Chen Jia sound.
This part of the standard replaces the previous editions are.
--- GB/T 9396-1988;
--- GB/T 9396-1996.
Sound system equipment
Part 5. Methods for measuring performance main speaker
1 Scope
This section applies to a speaker sound system, fully handled as a passive element, not including the speaker system with built-in amplifiers.
Note 1. This section the term "Speaker" refers to the speaker unit itself, but also baffled, one or more speakers or horn loudspeakers single cabinet
Yuan and related devices such as built-in speaker system dividers, transformers and other passive components thereof.
The purpose of this section is given to explain the characteristics and use of sine, specify the relevant measurement noise or pulse signal of the speaker.
Note 2. The measurement method is given in this section to reflect the characteristics of the speakers appropriately selected.
Note 3. If the same results can be obtained other measurement methods, detailed method used should be given together with the measurement results.
Note 4. The following provisions taking into account Category.
--- With built-in amplifier speaker system;
--- Different from the free-field, measured at half-space free-field and diffuse-field conditions;
--- Different from measuring sine, noise or other signal pulse signal is carried out.
2 Normative references
The following documents for the application of this document is more than essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 3241 electro-acoustics octave and fractional octave filters (GB/T 3241-2010, IEC 61260-1995, MOD)
Determination of sound power levels of noise sources reflecting plane free field engineering method GB/T 3767 sound pressure
(GB/T 3767-1996, eqv ISO 3744.1994)
GB/T 3769 electro-acoustics plotting frequency characteristics and polar diagrams of scale and size (GB/T 3769-2010, IEC 60263.
1982, IDT)
GB/T 3785.1 electric acoustic sound level meters - Part 1. Specification (GB/T 3785.1-2010, IEC 61672-1.2002, IDT)
Determination of sound power levels of noise sources - Precision methods for reverberation rooms (GB/T 6881.1-2002 GB/T 6881.1 sound pressure,
ISO 3741.1999, IDT)
GB/T 6882 Determination of sound pressure of sound power levels of noise sources anechoic and semi-anechoic chamber Precision method (GB/T 6882-2008,
ISO 3745.2003, IDT)
GB/T 12060.2-2011 Sound system equipment - Part 2. General Explanation of terms and calculation methods (GB/T IEC 60268-2.
1987, IDT)
GB/T 12060.3-2011 Sound system equipment - Part 3. audio amplifier measurement methods (IEC 60268-3.2000, IDT)
GB/T 15212 and broadcasting with similar sound system connected applications (GB/T 15212-1994, eqv IEC 60268-12. 1987)
SJ/Z9140.1 Sound system equipment - Part 1. General (SJ/Z9140.1-1987, idt IEC 268-1. 1985)
IEC 60050 (151) International Electrotechnical Vocabulary - Part 151. Electrical and magnetic devices (Internationalelectrotechnical
vocabularyPart 151. Electricalandmagneticdevices)
IEC 60268-14 Sound system equipment - Part 14. Circular and oval speaker shape and installation dimensions (IEC 60268-
14, Part 14. Circularandelipticalloudspeakers; outerframediametersandmountingdimensions)
IEC 60268-11. 1987 for the interconnection of sound system equipment connected applications
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