简介:Byusingd-formfunction,anewconstructionoffrequencyhoppingsequencewithoptimalHammingcorrelationispresentedinthisarticle,whichgeneralizestheresultspresentedbyDing(2007).Furthermore,anewclassofnon-powerfunctionstyled-formfunctionisproposedandanupperboundoftheHammingautocorrelationofthecorrespondingsequenceisalsoderived.
简介:T-180是八达应广大音响发烧友要求而开发的高级数字调谐器,T-180A型则加入音色迷人的电子管作放大输出,令声音柔顺、音场更宽阔,收音效果直追CD。