雙通路立體聲在5.1通路環(huán)繞聲的轉(zhuǎn)換重發(fā)

1、分類號UDC密級F786123學(xué)校代碼：1056l學(xué)號：200241000201002華南理工大學(xué)學(xué)位論文雙通路立體聲在51通路系統(tǒng)的轉(zhuǎn)換重發(fā)蔡陽生指導(dǎo)教師姓名：謝菠蓀教授物理科學(xué)與技術(shù)學(xué)院申請學(xué)位級別：碩士專業(yè)名稱：聲學(xué)論文提交日期：2005年4月論文答辯日期：2005年6月學(xué)位授予單位和日期：華南理工大學(xué)答辯委員會主席：論文評閱人華南理上人學(xué)碩士學(xué)位論文Abstract51channelsurroundsystemhasbeenre

2、cOmmendedasthestandardOfmultichannnelsurroundsoundbysomeinternationalorganizationsincludingITUIthassomemeritsuchasawidelisteningarea，stablefrontimageandgoodsoundeffectButtherearestillalotoftwochannelsstereoprogramrecordi

3、ngsnowSo，itbecomesasignificanttaskthattwochannelsstereoprogramrecordingscanbecompatiblyreproducedby51channelsurroundsoundsystemFirst，thepaperbrieflyreviewsthetheoriesofhumanlocalization，multichannelamplitudepanninglocali

4、zationandsoundreproducedbyloudspeakers。hearingVirtUalInthepaper，thetechnologythatthestereoprogramrecordingsarecompatiblyreproducedby51channelsurroundsystemiscomposedoftwoparts：(1)producingOfthesignalOfthefrontaIthreechan

5、nelS(SOundimagelocalizationinformation)；(2)simulatingsurroundchannelssignals(mainlyproducingacousticenvironmentinformationincludingenvironmentacousticstructureinformationandbackgroundnoiseinformation)Animprovementoncurre

6、ntmethodsforconvertingstereophonicsignaltothreefrontchannelssignalsbyvirtualsoundsignalprocessingiSproposedandasignalprocessingalgorithmwithtimbreequalizationisalSOintroducedItisprovedbysubjectiveandobjectiveexperimentst

7、hatbyusingvirtualsignalprocessing，threefrontchannelsreproductionisnotonlyabletorecreatethesamefrontimageasthatOfstereophonicreproduction，butalsoabletostabilizeimageandenlarge1isteningareaAllkindsofexistingmethodsofpick—u

8、psurroundchannelinformationareanalyzed，andanewmethodisproposedThemethodprovedbytheexperimentsTheobjectiveexperimentsshowthatthiSmethodcandecreaseIACCandILDeffectively，andthesubjectivelisteningexperimentsdemonstratethatth