声像质量的调整 |
ITU-T P.1203.3建议书为ITU-T P.1203建议书指定了质量集成模块。ITU-T建议书中的ITU-T P.1203系列指定了用于监测音频、视频和视频服务质量(例如自适应比特率视频流)的模块。相应的ITU-T工作项目被正式称为TCP多媒体流质量的参数型非入侵式评估(P.NATS)。ITU-T P.1203建议书的ITU-T P.1203.3部分可用于视频服务的性能和体验质量(QoE)监测,例如自适应比特率视频流。除基于流的输入信息外,ITU-T P.1203.3质量集成模块将分别根据ITU-T P.1203.1和P.1203.2计算的每秒视频质量和音频质量分数作为输入。对于ITU-T P.1203建议书系列模型的所有0到3四种模式,推荐仅使用一个质量集成模块,所有模式使用唯一的模块。本建议书包含一份电子附件,附件中涉及第8.4段阐述的全部20个树。对ITU-T P.1203.3建议书(2007年)的修订取代了第8.3段中的等式(20)。修正1引入了对ITU-T P.1203.3的视听质量的调整,用于非常低的音频质量和长时间停滞事件的情况。 |
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Citation: |
https://handle.itu.int/11.1002/1000/14284 |
Series title: |
P series: Telephone transmission quality, telephone installations, local line networks P.1200-P.1299: Models and tools for quality assessment of streamed media |
Approval date: |
2020-05-29 |
Provisional name: | P.NATS |
Approval process: | AAP |
Status: |
In force |
Maintenance responsibility: |
ITU-T Study Group 12 |
Further details: |
Patent statement(s)
Development history
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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P Suppl. 10 (11/1988)
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Considerations relating to transmission characteristics for analogue handset telephones
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In force
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-
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here
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here
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P Suppl. 16 (11/1988)
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Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)
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In force
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-
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here
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here
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P Suppl. 20 (03/1993)
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Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses
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In force
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-
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here
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here
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P Suppl. 23 (02/1998)
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ITU-T coded-speech database
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In force
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here
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here
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here
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P Suppl. 24 (10/2005)
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Parameters describing the interaction with spoken dialogue systems
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In force
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here
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here
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here
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P Suppl. 25 (01/2011)
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Parameters describing the interaction with multimodal dialogue systems
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In force
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here
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here
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here
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P Suppl. 26 (09/2017)
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Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality
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In force
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here
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here
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here
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P Suppl. 28 (09/2020)
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Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12
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In force
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here
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here
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here
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P Suppl. 31 (01/2025)
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Subjective quality evaluation of audiovisual communication in videotelephony services
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In force
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here
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here
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here
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