售前书06联通polqa-mos技术

基本要 主要用 配置要 多网络制式支持要 算法技术要 评估功能要 硬件要 电源特性要 录放音技术要 售后要 供货周 保修期 配置该仪表能基于LTE网络的语音业务VOLTE进行语音质量评估，支际标准的宽带语P.863POLQAP.862PESQPOLQALicense一个（MAC绑定，向下兼容PESQ算法。除以上规定要求的设备外，需提供满足测试要求的其他组件国际电联ITU语音评估算法标准有：PESQ(PerceptualEvaluationofSpeechQuality)和POLQ（PerceptualAssessmentP.863推荐的语音评估算法,对比之前的方法，POLQA将会在结果的精确性和可信度Wideband可预定义各种测试，自动检测、连接设备，实现信息自动化支持CSFB、eSRVCC和VoLTE等各种语音的MOSPESQ,POLQA支持参考波形和波形的图形化对比支持通话前，协助对判断未接通具体问题分MOSLibraryPOLQAPOLQAOEMlibP863ITUP.863referenceversionProcessingPOLQA算法有两种算分模式，Narrowband和SuperMode,Narrowband(NB)orSuperSample8KHzSWBSamplerateofthereferencespeechsignalinPOLQA对应到P.863标准的算分结果，有时也称呼为MOS-（MeanOpinionScoreListeningQualityObjective，NB模1-4.5，SWB1-4.75.POLQAscoreaccordingtoP.863,1to4.5forNBmode,14.75forSWBMeanTheaveragedelaybetweenthereferenceandthetestsignalinms.MinimumTheminimumdelaybetweenthereferenceandthesignalinum参考信号和信号间的最大时延Theumdelaybetweenthereferenceandthetestsignalinms.参考信号和信号之间的衰减值TheattenuationbetweenthetwoinputsignalsinRvalue(E映射到G.107ThePOLQAscoremappedasaG.107(E-Model)IeEstimatedSampleThesamplerateofthedegradedsignalasmeasuredby如果参考信号和信号间的数据速率差异超过0.5%，POLQA系统会将高速率的信号进行降速，此时ResampleApplied1（Yes）.Ifthesampleratesofthereferenceandthedegradedsignalwiththehighersamplerate.Ifthishappens,AppliedwillbesettoUplinkorDownlink,downlinkmeansthedeviceisyingthereferencesignal.LevelTheLevelofthereferencesignalindBov(averagedovertheentiresignal).LevelTheLevelofthedegradedsignalindBov(averagedovertheentiresignal).ASLTheactivespeechlevelofthereferencesignalindBov,measuredsimilartoP.56.ASLTheactivespeechlevelofthedegradedsignalindBov,measuredsimilartoP.56.PauseLevelThesilencelevelofthereferencesignalindBov,similartoPauseLevelThesilencelevelofthedegradedsignalindBov,similartoSNRTheSNRindBofthereferenceSNRTheSNRindBofthedegradedASRRatioTheactiveSpeechRatio(ASR)ofthereferencesignal.istheratioofthelengthoftheactivespeechsignalpartsandthetotalsignallength[0...1].ASRRatioTheactiveSpeechRatio(ASR)ofthedegradedsignal.ASRistheratioofthelengthoftheactivespeechsignalpartsthetotalsignallengthPitchTheaveragepitchfrequencyofthereferencePitchTheaveragepitchfrequencyofthedegradedRecordTherecordeddegradedsignalfile,alongwithits输入电压：DC8V~30V(通过电源接口供电)，DC5V（USBUSB功率：3.5W（单独多路mos盒的功率）/43.5W（当给8部同时充电时输入电压：DC功率