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GB/T 6278-2012: Sound system equipment -- General -- Simulated programme signal
Status: Valid GB/T 6278: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6278-2012 | English | 149 |
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Sound system equipment -- General -- Simulated programme signal
| Valid |
GB/T 6278-2012
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| GB/T 6278-1986 | English | 199 |
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Simulated programme signal
| Obsolete |
GB/T 6278-1986
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PDF similar to GB/T 6278-2012
Basic data | Standard ID | GB/T 6278-2012 (GB/T6278-2012) | | Description (Translated English) | Sound system equipment -- General -- Simulated programme signal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | M72 | | Classification of International Standard | 33.160.01 | | Word Count Estimation | 5,579 | | Older Standard (superseded by this standard) | GB/T 6278-1986 | | Quoted Standard | GB/T 3241-2010 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing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 specifies the analog program signal signal characteristics. This standard applies to all types of sound systems and equipment, and electro-acoustic measurement and calibration device characteristics. | GB/T 6278-2012: Sound system equipment -- General -- Simulated programme signal---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.
ICS33.160.01
M72
National Standards of People's Republic of China
Replacing GB/T 6278-1986
Sound system equipment Overview analog program signal
Issued on. 2013-06-01 2012-12-31 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard rule according to GB/T 1.1-2009 given draft.
This standard IEC 60268-1. 1985 "Sound system equipment - Part 1. Overview" in Section 7 of the analog program signal equivalents.
This standard replaces GB/T 6278-1986 "analog program signal."
This standard and GB/T 6278-1986 compared to the main changes are as follows.
--- The standard delete GB/T 6278-1986 in "Introduction", adding "Preface."
--- The standard adds "Range" and "normative references."
--- According to IEC 60268-1. 1985 contents Chapter 7 Delete the GB/T 6278-1986 in Figure 2b), which uses white noise source is eligible
Have a circuit diagram of an analog filter program signal.
The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard by the national audio, video and multimedia systems and equipment Standardization Technical Committee (SAC/TC242) centralized.
This standard was drafted. Nanjing University Institute of Acoustics.
Drafters of this standard. Shen Yong.
This standard replaces the standards previously issued as follows.
--- GB/T 6278-1986.
Sound system equipment Overview analog program signal
1 Scope
This standard specifies the characteristics of the analog signal program signal.
This standard applies to all types of sound systems and equipment, and electro-acoustic device characteristics measurement and calibration.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 3241-2010 electro-acoustics octave and fractional octave filters
3 signal characteristics
The simulation program signal is not clipped Gaussian noise steady weighted average power spectral density characteristics of such a signal containing multiple languages
Music programs and various program source signals characteristics mean the average power spectral density is very similar. When using GB/T 3241-2010 specified
When 1/3oct filter measurements, weighted power spectrum should be consistent with the provisions of the table and Figure 11.
This pink noise signal can be obtained through the filter circuit shown in Figure 2.
If appropriate, when measured with a narrowband signal, applied in Table 1 and the band relative power level specified in FIG. 1. (For information about how
Use this signal amplifier and speakers especially for measurement and characterization of their characteristics are being studied.)
Note. It should be noted that in the entire frequency band measured signal power level than the 1/3oct measured zero decibel high power level of about 12.5dB.
Table 1 shows the analog signal power spectrum
frequency
Hz
Relative power level
dB
Tolerance limits
dB
frequency
Hz
Relative power level
dB
Tolerance limits
dB
20 125 -13.5 3.0 3.0 -0.5 0.6 0.6
25 160 -10.2 2.0 2.0 -0.2 0.5 0.5
31.5 -7.4 1.0 1.0 -0.1 0.5 0.5 200
40 -5.2 1.0 1.0 2500 0.5 0.5
50 -3.5 1.0 1.0 3150 0.5 0.5
63 -2.3 1.0 1.0 4000 0.5 0.5
80 -1.4 1.0 1.0 5000 0.5 0.5
100 -0.9 0.8 0.8 6300 0.5 0.5
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