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It references various ITU-T recommendations, including Series P recommendations related to telephone transmission, subscribers' lines, transmission standards, and measurement apparatus. The abstract details different types of speech quality measurements, such as Listening-Quality (LQ), Conversational-Quality (CQ), and Talking-Quality (TQ), and their corresponding subjective and objective assessment metrics (MOS-LQSy, MOS-CQSy, MOS-TQSy for subjective; MOS-LQOy, MOS-CQOy, MOS-TQOy for objective; and MOS-LQEy, MOS-CQEy, MOS-TQEy for estimated). The document emphasizes the importance of understanding transmission parameters and their effects on customer opinion of transmission quality. It also situates these assessments within broader telecommunication contexts, including audiovisual quality in multimedia services and transmission performance of IP end-points. The structure suggests a comprehensive approach to evaluating speech communication quality through both human perception and instrument-based analysis.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/recommendation-p800-objective-and-subjective-assessment-of-speech-quality/183172/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/recommendation-p800-objective-and-subjective-assessment-of-speech-quality/183172.png","ImageObject",300,407,{"name":92,"@type":93},"Đào","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-27","2026-09-02",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",11,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What are the different categories of speech quality assessment mentioned in the document?","Question",{"text":113,"@type":114},"The document distinguishes between subjective and objective assessments. Subjective measures include MOS-LQSy (Listening-Quality), MOS-CQSy (Conversational-Quality), and MOS-TQSy (Talking-Quality). Objective measures include MOS-LQOy, MOS-CQOy, and MOS-TQOy, while estimated measures are denoted as MOS-LQEy, MOS-CQEy, and MOS-TQEy.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What is the significance of the Series P recommendations referenced?",{"text":118,"@type":114},"The Series P recommendations, such as P.10, P.30, P.40, P.50, P.60, and P.800, provide a framework for understanding and measuring various aspects of telephone transmission quality, including vocabulary, subscriber lines, transmission standards, and measurement apparatus.",{"name":120,"@type":111,"acceptedAnswer":121},"How does the document relate speech quality assessment to transmission parameters?",{"text":122,"@type":114},"The document highlights that the 'Vocabulary and effects of transmission parameters on customer opinion of transmission quality' (P.10) are crucial. It implies that changes or characteristics of transmission parameters directly influence how users perceive the quality of speech.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},183172,1788351588,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":140,"language":141,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":67,"update_tm":130,"read_time":41,"preview_page_count":4},1374402968488,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","| Vocabulary and effects of transmission parameters on customer opinion of transmission quality Series P.10\u003Cbr>Subscribers' lines and sets Series P.30\u003Cbr>P.300\u003Cbr>Transmission standards Series P.40\u003Cbr>Objective measuring apparatus Series P.50\u003Cbr>P.500\u003Cbr>Objective electro-acoustical measurements Series P.60\u003Cbr>Measurements related to speech loudness Series P.70 |\n| --- |\n| Methods for objective and subjective assessment of quality Series P.80\u003Cbr>P.800 |\n| Audiovisual quality in multimedia services Series P.900\u003Cbr>Transmission performance and QoS aspects of IP end-points Series P.1000 |\n\n\n|  | Listening-only | Conversational | Talking |\n| --- | --- | --- | --- |\n| Subjective | MOS-LQSy | MOS-CQSy | MOS-TQSy |\n| Objective | MOS-LQOy | MOS-CQOy | MOS-TQOy |\n| Estimated | MOS-LQEy | MOS-CQEy | MOS-TQEy |","cbCaiuamePsKuhu8","https://ap.wps.com/l/cbCaiuamePsKuhu8","pdf",284514,12,"English","# ITU-T Recommendations\n## Series P\n### P.10: Vocabulary and effects of transmission parameters on customer opinion of transmission quality\n### P.30: Subscribers' lines and sets\n### P.300\n### P.40: Transmission standards\n### P.50: Objective measuring apparatus\n### P.500\n### P.60: Objective electro-acoustical measurements\n### P.70: Measurements related to speech loudness\n# Methods for objective and subjective assessment of quality\n## Series P.80\n### P.800\n# Audiovisual quality in multimedia services\n## Series P.900\n## Transmission performance and QoS aspects of IP end-points\n### P.1000\n# Speech Quality Measurement Types\n## Subjective Measures\n### Listening-only (MOS-LQSy)\n### Conversational (MOS-CQSy)\n### Talking (MOS-TQSy)\n## Objective Measures\n### Listening-only (MOS-LQOy)\n### Conversational (MOS-CQOy)\n### Talking (MOS-TQOy)\n## Estimated Measures\n### Listening-only (MOS-LQEy)\n### Conversational (MOS-CQEy)\n### Talking (MOS-TQEy)","[{\"question\":\"What are the different categories of speech quality assessment mentioned in the document?\",\"answer\":\"The document distinguishes between subjective and objective assessments. Subjective measures include MOS-LQSy (Listening-Quality), MOS-CQSy (Conversational-Quality), and MOS-TQSy (Talking-Quality). Objective measures include MOS-LQOy, MOS-CQOy, and MOS-TQOy, while estimated measures are denoted as MOS-LQEy, MOS-CQEy, and MOS-TQEy.\"},{\"question\":\"What is the significance of the Series P recommendations referenced?\",\"answer\":\"The Series P recommendations, such as P.10, P.30, P.40, P.50, P.60, and P.800, provide a framework for understanding and measuring various aspects of telephone transmission quality, including vocabulary, subscriber lines, transmission standards, and measurement apparatus.\"},{\"question\":\"How does the document relate speech quality assessment to transmission parameters?\",\"answer\":\"The document highlights that the 'Vocabulary and effects of transmission parameters on customer opinion of transmission quality' (P.10) are crucial. It implies that changes or characteristics of transmission parameters directly influence how users perceive the quality of speech.\"}]","Recommendation P.800 - Objective and Subjective Assessment of Speech Quality | PDF"]