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GB/T 22122-2008: Methods of measurement of surround audio for digital TV
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Methods of measurement of surround audio for digital TV
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GB/T 22122-2008
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Basic data | Standard ID | GB/T 22122-2008 (GB/T22122-2008) | | Description (Translated English) | Methods of measurement of surround audio for digital TV | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | M74 | | Classification of International Standard | 33.160.25 | | Word Count Estimation | 14,118 | | Date of Issue | 2008-06-30 | | Date of Implementation | 2009-01-01 | | Quoted Standard | GB/T 17975.1-2000; GB/T 17975.3-2002; GB/T 17975.7-2002; SJ/T 11180-1998; SJ/T 11324-2006; SJ/T 11368-2006; ITU-R BS.1196-1 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 11 of 2008 (No. 124 overall) | | 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 digital TV surround sound, dual-channel sound electrical properties measurements, the measurement conditions and the measurement method. This standard applies to standard definition and high definition digital television receiving equipment, product design, production, testing the main basis. | GB/T 22122-2008: Methods of measurement of surround audio for digital TV---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.
Methods of measurement of surround audio for digital TV
ICS 33.160.25
M74
National Standards of People's Republic of China
Digital TV Surround Sound Measurement
Posted 2008-06-30
2009-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard proposed by the People's Republic of China Ministry of Information Industry.
This standard by the national audio, video and multimedia systems and equipment under the jurisdiction of the Standards Committee.
This standard drafting units. China Electronics Standardization Institute, Guangzhou Sheng Digital Technology Co., Ltd.
The main drafters of this standard. Memorial, Liu Lun good following, Wang Qi, Fanke Feng, Cao Ling.
Digital TV Surround Sound Measurement
1 Scope
This standard specifies the digital TV surround sound, dual-channel measurement of electrical properties of sound projects, measurement conditions and methods of measurement.
This standard applies to standard definition and high definition digital television receivers (digital TV receivers and digital television receivers), is
Product design, production, the main basis for inspection.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 17975.1-2000 Information technology - Generic coding of moving pictures and associated audio information - Part 1. System (idt ISO /
IEC 13818-1.1996)
GB/T 17975.3-2002 Information technology - Generic coding of moving pictures and associated audio information - Part 3. Audio (ISO /
IEC 13818-3.1998, IDT)
GB/T 17975.7-2002 Information technology - Generic coding of moving pictures and associated audio information - Part 7. Advanced Audio Coding
(ACC) (ISO /IEC 13818-7.1997, IDT)
SJ/T 11180-1998 and audio visual equipment digital audio portion of the audio characteristics of the basic methods of measurement
SJ/T 11324-2006 digital television receivers term
SJ/T 11368-2006 multi-channel digital audio codec specification
ITU-RBS. 1196-1 digital terrestrial television broadcasting Audio Coding
3 Terms, definitions and abbreviations
3.1 Terms and Definitions
SJ/T 11324-2006 and established the following terms and definitions apply to this standard.
3.1.1
Respectively, corresponding to the maximum positive and maximum negative value of the maximum positive and maximum negative digital codes coded values.
Surround sound is used to deliver 5.1 audio channel. Consists of six independent channels, namely left channel (L), center channel (C),
Right channel (R), left surround channel (Ls), right surround channel (Rs) and a low frequency enhancement channel (LFE), also commonly referred to as 0.1 channel.
3.2 Acronyms
The following abbreviations apply to this standard.
AAC. Advancedaudiocoding Advanced Audio Coding
C. Centerchannel center channel
dBFS. decibelfulscale digital audio signal level units (0dBFS equal to "full-scale" digital audio reference level)
L. Leftchannel left channel
LFE. Lowfrequencyenhancedchannel low frequency enhancement channel
Ls. Leftsurroundchannel left surround channel
MPEG-2. Generic coding of moving pictures and associated audio standards CodingofMovingPictureandAssociatedAudio signal
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