Ilya- > I think nobody will send you the code of WI since now it is a > commercial secret. > > About Choy's coder. In the site of McGill University Choy publishes > the demo files that was generated by his coder. On listening them I am > not sure that Choy's coder (if he implemented his thesis exactly) can > produce so good speech. So, be careful when you compare you coder to > Choy's one. > > One of the problem of Choy's coder is an absolutely primitive pitch > detector; WI needs much more sophisticated algorithm. I recommend you > to look at the pitch detector of MELP: it efficiently solves the > pitch-doubling. > > See also my message in this newsgroup #644. The MELP pitch detector is very good. However, we've found some errors in it and corrected those, plus added some additional processing. Basically, our objective was to make a "MELPe-Plus" version that can handle music-on-hold, and we've made good progress towards that. Jeff Brower system engineer Signalogic > --- In , "dr_simic" <dr_simic@y...> wrote: > > I'm trying to implement WI codec,for now just layer I(without > quantisation),as it is described in Eddie Choy's thesis,but I don't > get perfectly sounding decoded speech,as they stated,there are audible > errors,and these errors usually occur when pitch doubles. Can anybody > help me,or send me some code that is working. > > Thanks in advance. |