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1、专业人员教授如何测试MP3音质ProfessionalsteachhowtotestMP3soundquality,theworldwidehomeappliancenetwork[original]author:worldwidehomeappliancenetworkeditor:liuhuali05yearsDecember,05daysagoWiththedevelopmentofthemarket,nowmoreandmorevarietiesofMP3players,thepriceisalsomoreand
2、moreaffordable・MoreandmoreMP3isenteringtheuser，spocket,too.ItcanbesaidthattheMP3Walkmanenrichesthepersonalworldandcanenjoybeautifulmusicwheneverandwhereverpossible・AsaWalkman,theultimategoalofMP3istorestoretruemusic・Asasoundlover,naturallyitiseasytodistinguishthe
3、soundquality,andtheaverageusercanclearlyknowwhetherthesoundqualityoftheMP3WalkmanisgoodorbadBelow,IteachyouhowtotestMP3soundquality・EvaluationstandardBeforeevaluating,itisnecessarytounderstandsomemusicaltermsfirst.Theterm"soundquality",ageneralexplanation,isthequ
4、alityofsound・However,inaudioitcontainsthreeaspects:thesoundofthepitch,intensityandamplitudefrequency;thetoneofvoice,thefrequencyornumberofchangespersecondaudio;thevoicesound,audioorharmonicovertone・Evaluationontheaudioproductquality,themainmeasureiswhetherthevoic
5、eoftheabovethreeaspectstoacertainlevelisrelativetoacertainfrequencybandorpitch,whetherhasacertainstrength,andinthespecifiedfrequencyrange,thesamevolume,thefrequencyrangeisnotuniform,balaneedandfullfrequencytheresponsecurveisstraight:voiceintonationisaccurate,noto
6、nlyfaithfullyshowaudiofrequencyorcomponentsoftheoriginalfeatures,frequencydistortionandphaseshiftandmeettherequirementsofharmonicsound;moderateharmonic,richtimbre,soundsbeautiful.Andsometerms:First,soundquality:soundqualityisthemostbasicandthemostwidelyusedtermfo
7、revaluatingsoundequipment・Two,tone:soundwillbelikelight,likethecolor,themorewarmthesound,thesofterthesound,theharderthesoundbecomes・Thetonecanbedescribedbythewords"beauty","nob订ity〃andsoon.Three,thesoundfieldfeeling:Thisincludestheshapeofthesoundfield,frontandbac
8、kposition,height,width,depthandotheritems・Four,thesenseofhierarchy:Thisisthesoundfield,togotothenextrowofmusicalinstruments,thelevelofclarity,aswellastheinstru
