| 评估传输网络对移动分组交换语音业务语音质量影响的机器学习模型 |
ITU-T P.565.1建议书基于ITU-T P.565框架,它提供了一个基于机器学习的模型,用于预测网际协议(IP)传输和底层传输对语音质量的影响,以及终端客户端的预定义抖动缓冲;因此能够以网络为中心的视角评估关于移动分组交换网上传输的语音质量业务。此评估用平均意见得分 – 听力质量目标(MOS-LQO)来表示,其假设的前提为洁净传输:没有背景噪声、发送设备上不符合标准的标编码、自动增益控制、语音增强设备、代码转换、桥接、频率响应、不符合标准的抖动缓冲(用于IP多媒体系统(IMS)移动呼叫)或解码、时钟漂移或任何其他不是由IP传输和基础传输引起的损害。该模型支持在经修订的ITU-T P.565中为IMS移动呼叫(具有EVS、AMRWB编解码器的VoLTE/VoNR)和OTT/WhatsApp定义的用例和应用。此外,它满足所提供的测试向量的最低性能要求(参见ITU-T P.565,附件D),并且它还通过了对额外的未知实况记录数据集的独立验证(参见ITU-T P.565,附件D)。该模型能够评估传输网络对移动分组交换语音业务语音质量的影响。此外,如果该预测因子与如[ITU-T P.863]中的感知语音分析或感知语音质量指标共同使用,则有可能确定问题的来源是在预测因子观察到的传输网络内部还是外部。关键词语音质量预测、HD语音、EVS、AMR/AMR-WB、FB、OTT语音、IMS移动语音、VoLTE、VoNR、OTT、机器学习(ML)、侵入式参数、通用OTT客户端 |
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| Citation: |
https://handle.itu.int/11.1002/1000/14823 |
| Series title: |
P series: Telephone transmission quality, telephone installations, local line networks P.500-P.599: Objective measuring apparatus |
| Approval date: |
2021-11-29 |
| Provisional name: | P.VSQMTF-1 |
| Approval process: | AAP |
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Status: |
In force |
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Maintenance responsibility: |
ITU-T Study Group 12 |
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Further details: |
Patent statement(s)
Development history
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| Ed. |
ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
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1
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P.565.1 (11/2021)
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In force
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here
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-
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here
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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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| Title |
Approved on |
Download |
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Implementer's guide for Recommendation ITU-T P.565.1
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2022-06-17
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here
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| Title |
Approved on |
Download |
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Addition to Section 2.3 of the Handbook on Telephonometry
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2000
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here
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Addition to Section 3 of the Handbook on Telephonometry
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2000
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here
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Additions to the Handbook on Telephonometry
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1999
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here
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Telephonometry
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1992
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here
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