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CYT168-2019 English PDF

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CYT168-2019: Specifications for content resource processing in press and publication - Part 11: Audio processing
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Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
CY/T 168-2019	English	579	Add to Cart	4 days [Need to translate]	Specifications for content resource processing in press and publication - Part 11: Audio processing	Valid	CY/T 168-2019

PDF similar to CYT168-2019

Standard similar to CYT168-2019

GB/T 28826.2 YD/T 3746 GB/T 31071 CY/T 263 CY/T 179 CY/T 169

Basic data

Standard ID	CY/T 168-2019 (CY/T168-2019)
Description (Translated English)	Specifications for content resource processing in press and publication - Part 11: Audio processing
Sector / Industry	Press & Publication Industry Standard (Recommended)
Classification of Chinese Standard	L70
Word Count Estimation	23,217
Date of Issue	2019-05-14
Date of Implementation	2019-06-01
Regulation (derived from)	Industry Standard Recording Announcement No. 6 of 2019 (Total No. 234)
Issuing agency(ies)	State Press and Publication Administration

CYT168-2019: Specifications for content resource processing in press and publication - Part 11: Audio processing

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(Processing specifications for press and publication content resources-Part 11. Audio processing) ICS 35.240.30 L70 CY PRC Press and Publication Industry Standards 2019-05-14 released 2019-06-01 implementation Published by the National Press and Publication Administration Processing specifications for press and publication content resources Part 11. Audio Processing Specifications for content resource processing in press and publication- Part 11. Audio processing

Foreword ... II 1 Scope ... 1 2 Normative references ... 1 3 Terms and definitions ... 1 4 Processing object ... 3 5 Processing specifications ... 3 5.1 Format selection principles ... 3 5.2 Long-term preservation level ... 3 5.3 Publishing Service Level ... 3 5.4 Distribution Application Level ... 4 6 Metadata ... 4 6.1 Overview ... 4 6.2 Basic metadata of audio resources ... 4 6.3 Sub-audio metadata ... 5 6.4 Author metadata ... 6 6.5 Type metadata ... 6 6.6 Format metadata ... 6 6.7 Attachment metadata ... 7 6.8 Managing metadata ... 7 7 Naming and Storage ... 7 7.1 Naming rules ... 7 7.2 Storage ... 8 8 Processing process ... 8 8.1 Audio resource processing ... 8 8.2 Pre-processing ... 9 8.3 Digital acquisition ... 10 8.4 Audio post-processing ... 11 9 Basic requirements for metadata indexing ... 11 10 Quality factors and evaluation requirements ... 12 10.1 Content Quality ... 12 10.2 Technical quality ... 12 Appendix A (Normative Appendix) Sample XML Schema for Audio Resource Metadata Indexing ... 14 Appendix B (informative) Sample XML resource metadata indexing ... 17 References ... 20

Foreword

The series of Standards for the Processing of Press and Publication Content Resources includes the following 12 standards. ──CY/T 101.1-2014 News processing content resource processing specifications Part 1. Processing terminology; ──CY/T 101.2-2014 Specification for processing of news and publication content resources Part 2. Data processing and application mode; ──CY/T 101.3-2014 Press and Publication Content Resource Processing Specifications Part 3. Data Processing Specifications; ──CY/T 101.4-2014 Specification for processing resources of news and publication content Part 4. Data processing quality; ──CY/T 101.5-2014 Specifications for Processing Resources of Press and Publication Content Part 5. Data Management; ──CY/T 101.6-2014 Specification for processing of press and publication content resources Part 6. Data management; ──CY/T 101.7-2014 Specification for Processing Content Resources of News and Publications Part 7. Data Delivery; ──CY/T 101.8-2014 Specifications for Processing Resources of Press and Publication Content Part 8. Book Processing; ──CY/T 101.9-2014 Specifications for the processing of news and publication content resources Part 9. Newspaper processing; ──CY/T 101.10-2014 Specification for processing of press and publication content resources Part 10. Periodical processing; ──CY/T 169-2019 Specification for processing of press and publication content resources Part 12. Video processing. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed and managed by the National Press and Publication Information Standardization Technical Committee (SAC/TC 553). This standard was drafted. China-Singapore Jinqiao Digital Technology (Beijing) Co., Ltd. Zhongke Huijin Digital Technology (Beijing) Co., Ltd., Chemical Industry Press, People's Medical Publishing House, People's Music Publishing House. The main drafters of this standard. Zhao Haitao, Zhou Changling, Liu Chengyong, Xiong Zhiyuan, Meng Xinchen, Wang Wenqian, Shi Xiong, Wen Qiang, Xu De, Fan Junyi, Tang Shengping, Qi Xue, Liu Yong, Zhang Mo, Guo Jianwei, Li Fujian, Wang Zexiang, Xue Miao, Liu Jinglong, Zhu Honglin, Meng Haiguang, and Xun. Processing specifications for press and publication content resources Part 11. Audio Processing

1 Scope

This standard specifies the processing objects, processing specifications, metadata, naming and storage, processing processes, Metadata indexes content such as basic requirements, quality factors, and evaluation requirements. This standard applies to digital processing and quality inspection of audio resources in the press and publishing industry.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB 18030 Information Technology Chinese Coded Character Set CY/T 50-2008 publishing term CY/T 101.1-2014 Press and publishing content resource processing specifications Part 1. Processing terminology

3 terms and definitions

The terms and definitions defined in CY/T 50-2008 and CY/T 101.1-2014 and the following terms apply to this document. 3.1 Digital audio A bit sequence of an audio signal is represented by binary coded data. Note. Rewrite GB/T 22726-2008, definition 3.1.1. 3.2 Sampling Frequency; Fs The rate is defined in Hertz, and the number of samples taken from a continuous signal per second to form a discrete signal. Rewrite GB/T 17975.7-2002, definition 3.70. The higher the sampling frequency, the more accurately the sound waveform is expressed, and the smaller the digital sound distortion. 3.3 Quantitative level The number of classifications used to measure the amplitude of discrete signals after sampling, usually using "bits" as a unit. 16 bits, 24 bits. [GB/T 31219.4-2014, definition 3.2] 3.4 Channels The number of channels on which the audio signal is transmitted. Mono; multi-channel. [GB/T 31219.4-2014, definition 3.3] 3.5 Signal to Noise Ratio; SNR Abbreviation for normal sound signal to noise signal ratio. Note. The measurement unit of the signal-to-noise ratio SNR is dB, and its calculation method is 10Lg (Ps/Pn), where Ps and Pn represent the effective power of the signal and noise respectively; The ratio relationship converted into the voltage amplitude. 20Lg (Vs/Vn), where Vs and Vn represent the "effective value" of the signal and noise voltage, respectively. 3.6 Bitrate The rate at which the compressed bitstream is transmitted to the input of the decoder. [GB/T 17975.7-2002, definition 3.7] 3.7 Channel A sequence of data used to represent an audio signal at a listening position. [GB/T 17975.7-2002, definition 3.14] 3.8 Long-term preservation level For archiving purposes, a storage specification that preserves audio data while ensuring the content and physical integrity of the digital audio data. 3.9 Publishing service level A storage specification for users to quickly download and browse digital audio for the purpose of obtaining and using. Note. The file rate of this level is low and the volume is small. 3.10 Waveform Audio file format; WAV A waveform sound file format that conforms to the RIFF file specification. Note. Generally, the uncompressed audio data is stored in a large volume, which is not suitable for network transmission. 3.11 Broadcast Wave Format. BWF A special WAVE that contains basic metadata information about audio content and can be used for digital audio and wireless broadcast and television exchange file format. 3.12 A fast and powerful lossless audio compressor; APE A compressed format that compresses and reduces the volume of audio files with a refined recording method. After the compressed file is restored, it is consistent with the source file. Note. This technology is open source. 3.13 Lossy compressed audio file format Moving Picture Experts Group Audio Layer III A compression format that irreversibly deletes (hearing insensitive to the human ear) data to reduce the size of the source audio file. 3.14 Advanced Audio Coding; AAC A compact file lossy compression format designed specifically for sound data, supporting audio encoding formats for up to 48 full-range channels. 3.15 Dynamic range The logarithm of the ratio of the maximum undistorted output power of the audio system during playback to the output power of the system noise during static conditions, in decibels (dB). Note. If a normal person has a hearing threshold of 0dB SPL and a discomfort threshold of 120dB SPL, his dynamic range is 120dB.

4 Processing object

Audio content resources in the press and publishing industry include cassette tapes (AT), reel-to-reel audio tapes, Digital Audio Cassette (DAT), Compact Disc (LP), Rough Disc (SP), Mini Disc, CD And other native resources reserved on analog media, digital audio native resources, and digital audio file format resources.

5 Processing specifications

5.1 Format selection principles The file storage format used by all types of audio resources should follow the principles of universally recognized and mature applications, or comply with international standards, national Home or industry standards. Common file storage specifications include long-term preservation level, release service level, and circulation application level. 5.2 Long-term preservation The processing specifications of the audio resource long-term preservation level are shown in Table 1. Audio resource long-term preservation grade processing specifications Resource Content Quality Resource Level The main parameters Recommended format Sampling rate quantization accuracy number of channels Very high quality standards Long-term preservation 768/384 kHz 24 bit, 32 bit, 64 bit Multi-channel/Dual-channel / Monaural Material characteristics) BWF WAV High quality standard 192 kHz 24 bit, 32 bit DVD audio quality standard 96/48 kHz 24 bit, 32 bit CD audio quality standard 44.1 kHz 16 bit 5.3 Release Service Level See Table 2 for processing specifications of audio resource publishing service level. Audio resource release service level processing specifications Application resource level The main parameters Recommended format Sampling rate quantization accuracy number of channels Release Service Release Service Level 44.1 kHz 16 bit Dual/Mono (Required by publishers and service providers Decide) BWF WAV APE FLAC 5.4 Distribution Application Level See Table 3 for processing specifications of audio resource distribution application level. Audio resource distribution application-level processing specifications Application resource level The main parameters Recommended format Sampling rate quantization accuracy number of channels Flow-through application Flow-through application grade 44.1 kHz 320 kb/s dual/mono MP3 AAC WMA

6 metadata

6.1 Overview Metadata contains basic metadata of audio resources, track metadata, author metadata, type metadata, format metadata, attachment metadata Data and management metadata. Metadata is stored in XML 1.0 and above formats, where characters should be in the GB 18030 character set. The formula should be UTF-8. Audio resource metadata indexing XML Schema is shown in Appendix A, audio resource metadata indexing XML examples are shown in Appendix Record B. 6.2 Basic metadata of audio resources The basic metadata of audio resources shall refer to the relevant provisions of GB/T 25100-2010, as shown in Table 4. Audio resource basic metadata Serial number Chinese name English label mandatory repeatability remarks (corresponding to DC) 1 Audio resource unique identifier \u003cIdentifier\u003e Required non-repeatable identifier (Identifier) 2 Chinese Standard Audiovisual Product Code \u003cISRC\u003e Must be repeated Table 4 (continued) Serial number Chinese name English label mandatory repeatability remarks (corresponding to DC) 3 Use standard number \u003cUseStandardNO\u003e If necessary, repeatable, such as GB/T 25100-2010 4 Source ID \u003cSID\u003e Must be repeated 5 ISBN \u003cISBN\u003e Must be repeated \u003chtml\u003e 6 Title \u003cTitle\u003e Required repeatable title (Title) < / html> 7 Authors \u003cCreator\u003e Essential Repeatable Creator 8 Other responsible persons \u003cContributor\u003e If necessary, repeat other contributors 9 topics \u003cSubject\u003e Have a repeatable subject 10 Description \u003cDescription\u003e Required repeatable description (Description) 11 Publication date \u003cDate\u003e Must have non-repeatable dates (Date) 12 publishers \u003cPublisher\u003e Required repeatable publisher (Publisher) 13 Format \u003cFormat\u003e Must have repeatable format (Format) 14 sources \u003cSource\u003e Must have a repeatable source (Source) 15 languages \u003cLanguage\u003e Must have repeatable language (Language) 16 Associations \u003cRelation\u003e There is a necessary repeatable relationship (Relation) 17 types \u003cType\u003e There is a required repeatable resource type (Type) 18 Coverage \u003cCoverage\u003e If necessary, repeatable coverage (Coverage) 19 Rights \u003cRights\u003e Must have repeatable permissions (Rights) 20 Unit price \u003cPrice\u003e If necessary, repeatable 21 Chinese picture classification number \u003cCLC Code\u003e If necessary, repeatable 22 Series Titles \u003cSeries Title\u003e If necessary, repeatable 23 series sequence number \u003cSeries Number\u003e If necessary, repeatable 24 versions \u003cEdition\u003e Must be repeated 6.3 Sub-audio metadata The sub-audio metadata contains information about the sub-audio of the audio file, as shown in Table 5. Track metadata Serial number Chinese name English label mandatory repeatability remarks (corresponding to DC) 1 Audio resource unique identifier \u003cIdentifier\u003e Must not be repeated 2 sub audio unique identifier \u003cSubIdentifier\u003e Required non-repeatable identifier (Identifier) 3 Title \u003cSubTitle\u003e Required non-repeatable title (Title) 4 Titles in other languages \u003cTitleOtherLanguage\u003e Optional repeatable 5 Author \u003cSubCreator\u003e Optional Repeatable Creator 6 Keywords \u003cSubKeyWords\u003e Optional repeatable 7 Keywords \u003cSubSubject\u003e Optional repeatable subject 8 Audio classification \u003cSubType\u003e Optional repeatable resource type 9 Dot Mark Items \u003cMark\u003e Optional repeatable 10 Dot Mark Item Order \u003cMarkNumber\u003e Optional repeatable 6.4 Author metadata Author metadata contains author-related information, see Table 6. Author metadata Serial Number Chinese Name English Label Mandatory Repeatability Notes 1 sub audio unique identifier \u003cSubIdentifier\u003e Must not be repeated 2 Author order \u003cCreatorSN\u003e Optional non-repeatable 3 Author name \u003cCreatorName\u003e Must be repeatable 4 Other forms of name \u003cCreatorOtherName\u003e Optional repeatable 5 Affiliates \u003cCreatorOrganiztion\u003e Optional repeatable 6 Author address \u003cCreatorAddress\u003e Optional repeatable 7 Contact \u003cCreatorContact\u003e Optional repeatable 8 About the author \u003cCreatorBrief\u003e Optional repeatable 9 author photos \u003cCreatorPhoto\u003e Optional repeatable 6.5 Type metadata Type metadata contains information about audio types, see Table 7. Type metadata Serial Number Chinese Name English Label Mandatory Repeatability Notes 1 sub audio unique identifier \u003cSubIdentifier\u003e Must not be repeated 2 Theme \u003cSubjectMatter\u003e Optional repeatable 3 Genre \u003cLiteraturetype\u003e Optional repeatable 4 Style \u003cStyle\u003e 可选可重复 5 Varieties \u003cDramaType\u003e Optional repeatable 6 Songs \u003cQuyiSort\u003e Optional repeatable 6.6 Format metadata The format metadata contains information about the audio format, see Table 8. Format metadata Serial Number Chinese Name English Label Mandatory Repeatability Notes 1 Audio resource unique identifier \u003cIdentifier\u003e Must not be repeated 2 Duration \u003cDuration\u003e Optional non-repeatable 3 Original media \u003cOriginalMedia\u003e Optional non-repeatable 4 Sampling frequency \u003cSampFrequency\u003e Optional non-repeatable 5 quantization accuracy \u003cQLevel\u003e Optional non-repeatable 6 channels \u003cChannels\u003e Optional non-repeatable 7 bit rate \u003cBitRate\u003e Optional non-repeatable 8 Signal to noise ratio \u003cSNR\u003e Optional non-repeatable 9 file size \u003cSize\u003e Optional non-repeatable 6.7 Attachment metadata Attachment metadata describes the attachment information of the audio, see Table 9. Attachment metadata Serial Number Chinese Name English Label Mandatory Repeatability Notes 1 Audio resource unique identifier \u003cIdentifier\u003e Must not be repeated 2 Sequence number \u003cSN\u003e Optional non-repeatable 3 Attachment types \u003cAttachmentType\u003e Optional repeatable 4 Brief description \u003cAttachmentBrief\u003e Optional repeatable 6.8 Managing Metadata Management metadata records processing and production related information, see Table 10. Management metadata Serial Number Chinese Name English Label Mandatory Repeatability Notes 1 Audio resource unique identifier \u003cIdentifier\u003e Unique ID of a required non-repeatable resource 2 levels \u003cLevel\u003e Optional non-repeatable resource importance 3 processors \u003cProcessor\u003e Must be repeatable Customizable processor types, institutions /personal 4 Processing date \u003cProcessDate\u003e Necessary non-repeatable resource processing time 5 Composition \u003cFiles\u003e Optional repeatable files 6 storage location \u003cFilesLoaction\u003e Optional repeatable resource location description

7 Naming and storage

7.1 Naming rules The encoding of audio file names should include four parts. project code, document code, structure code, and resource level code, as shown in Figure 1. XXXXXXXX-XXXXXXX-XXXXX-X/XX Literature code Structure code Resource level Project code Audio resource name encoding The detailed description of each part of the audio resource naming coding is as follows. a) Project code. The project code should be in the form of "project number project year". b) Document code, which represents the number of the audio resource processed in the year of the digitization project (the unique identifier of the audio resource). c) Structure code, structure code consists of structure code serial number. 1) The structure code is a 1-letter letter, which represents the structure information of the object data. See Table 11 for details. 2) The smallest unit of the object data expressed by the serial number after the structure encoding; 3) No connection symbol is required between the structure code and the serial number. d) Resource level code, which represents the application level of the resource, including. 1) The long-term storage level is indicated by the letter A; 2) The release service level is represented by the letter D; 3) The circulation application level is identified by the letter M. Structure code table Number structure coding description 1 A CD cover of audio materials, screenshot cover of network resources, etc. 2 B Audio directory, etc. 3 C Individual tracks of audio material. 4 T Printed attachments of audio materials, relevant materials for physical resources, etc. 5 X CD back cover of audio materials, etc. 7.2 Storage The project is an independent storage structure, and all documents are stored in it. The storage system is shown in Figure 2. Project code (folder) Audio resources (folder) Processed Product File (folder) Corresponding structure corresponding level Other audio files Raw audio file (folder) annex (folder) Resource-level code (folder) Corresponding audio file Description document Storage system

8 Processing process

8.1 Audio resource processing The processing of audio content resources in the press and publishing industry includes audio pre-processing, digital acquisition, audio post-processing, metadata markup Citation and data archiving. 8.2 Pre-processing 8.2.1 Pre-processing process The audio pre-processing process includes processes such as outbound registration, resource inspection, physical repair, cleaning, and installation and commissioning of analog playback equipment. See Figure 3. Native resource Outbound registration Resource inspection cleaning treatment Physical repair Analog playback device Installation and commissioning Eligibility whether Can be repaired Return to library (Pending) Pre-processing process 8.2.2 Outbound Registration Take out the resources to be processed from the warehouse, and check the number of records and covers. Records and jacket numbers should be the same, and then registered. 8.2.3 Resource check Check the audio resources to be processed to determine the integrity of the resource preservation, whether physical repair is required and digital processing is required. 8.2.4 Physical repair Repair damaged audio resources, the repair principles are as follows. a) Use resources that can be repaired by current mature technologies and repair as much as possible; b) the current mature technology cannot be repaired, it will be kept as it is and stored in accordance with the preservation requirements until the future technology matures; c) The original resource objects must not be damaged during the repair process. 8.2.5 Cleaning treatment The cleaning process includes tape cleaning, disc cleaning, and vinyl cleaning. a) Tape cleaning. Before cleaning, it is necessary to judge whether cleaning is required. Use medical cotton for cleaning. b) The disc is clean. When the surface of the laser record is stained, it can be moistened with a soft flannel moistened with water and then wipe it gently. Wipe out Note. Do not wipe along the lines; do not wipe with alcohol or other organic solvents; leave no residue after cleaning; do not damage the disc. c) Vinyl cleaning. When cleaning vinyl records, distinguish between categories. When the surface of the disc is relatively clean, use a soft brush to remove dust; When there is dust on the surface of the plate, rinse with clean water or use special dust-removing water for vinyl. Note. When shellac records are cracked, consider washing them as appropriate. When the surface of the plate is oily, gelatinous, or moldy, use a special black cleaning agent to soften, decompose and clean the dirt; When there are hard objects agglomerated on the surface of the disc, use professional tools to perform the crushing treatment, and then use a special black rubber cleaning agent to clean it. 8.2.6 Installation and commissioning of analog playback equipment For different audio materials, corresponding audio equipment debugging should be completed, including all required recording equipment, professional wires, specific instruments, etc. Debugging. 8.3 Digital acquisition 8.3.1 Collection process The digital acquisition process of audio resources is shown in Figure 4. Select hardware Playback device Audio resource acquisition parameter settings implement monitoring metadata cataloging Content collection process 8.3.2 Digital Acquisition and Processing Environment The digital collection and processing environment should choose an independent space with moderate, quiet, consistent temperature and humidity throughout the year. 8.3.3 Digital acquisition equipment The selection and connection of digital acquisition equipment mainly includes the following steps. a) Select the player, including. 1) For the audio resources of different storage media, select the corresponding playback device for playback; 2) Select professional playback equipment containing high-standard ADC and DAC, as well as heavy weight and levelness manufactured by precision lathes A turntable with a high turntable turntable and a standard industrialized tonearm. b) Select the audio card, including. 1) Audio cards with high sampling frequency, quantization accuracy, high signal-to-noise ratio and low total harmonic distortion rate should be selected to ensure sound quality. Original authenticity 2) The selectable frequency response range should be 44.1kHz, -0.1dB. 3Hz ~ 20.5Hz; 96kHz, -0.5dB. 3Hz ~ 45.5kHz; 192kHz, -1dB. 2Hz to 92.7kHz; 384kHz, -1dB. < 1Hz to 124kHz; 768kHz, -3dB. < 1Hz to 180kHz audio card; 3) An audio card with a low latency and a high-quality DSP signal processing chip can be selected to assist the CPU in processing audio signals. number. c) Connected equipment, according to different processing sources and processing needs, select the corresponding connected equipment scheme. 8.3.4 Acquisition parameter setting Audio capture parameter settings include analog capture and digital transpose. a) Analog acquisition, including. 1) Define the audio collection source; 2) Setting of specific parameters, sampling rate, loudness measurement, mono/stereo, etc .; 3) Define audio capture format, using BWF/WAV format; 4) Define the audio signal...

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