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Hi tamij, I think the best way to know how to convert LPC to LSP is to read the source code of G.729 and G.723.1. While reading the source code, you can refer ITU G.729 standard document Section 3.2.3 'LP to LSP conversion'. If you want to know the theory of LSP, you can find some explanations from the following links: http://www.ee.ic.ac.uk/hp/staff/dmb/courses/speech/Lpc.pdf http://scholar.lib.vt.edu/theses/available/etd-11122001- 094938/unrestricted/VN_etd.pdf Hope these documents can help you solve the LSP puzzle. Best regards, Yidan Zhou --- In speechcoding@y..., tamij arassane <sunctamij@y...> wrote: > hi all, > > i d'nt know how they are converting the LPC co- efficients to LSP co-efficients i want some explanation regarding these. can anyone help me. > > tamij |