ThePaPer15abouttheresearehonalgorithmandtheimPlementationon 24bitfixed一 PointDSPchiP.ThePaPeralsoincludessomediseussionabout theeodeoPtimizationtoreducethealgorithmeomPlexityandraisedthe eodingeffieiency.50theresearehmainlyincludesthefollowingseveralParts: First， translatetheexistingfixed一 PointCeodetoDSPaSSemblycode. DuringthisProeesslettheProgramPasslotsoftestsequencestoguarantee Proeedureaeeuracy.Second， aimingattheADSPZ181Processor’ 5characters dosomeoPtimizationtoSPeexalgorithm.AfteroPtimization， SPeexeneoding algorithm’ 5oPeratingsPeedhasbeenenhaneedabout40 . SPeexsPeeeheodechasbeenusedinanactualVOIPPhoneterminal.

speex_ENcode\Speex语音编解码算法及其在DSP上的实现.nh
speex_ENcode

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