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Dear all, I have downloaded the source of CELP. But I didn't find the papers to explain the details of this algorithm. So I want to know where I can find it? Thank you. |
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About CELP paper
Started by ●June 4, 2004
Reply by ●June 5, 20042004-06-05
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hi jiang, acutally CELP coding is kind of familly of coding technics. The basic of it is the use of an LP filter to model the vocal track and the excitation for this filter. In most CELP coders the excitation is a combination of long term pridiction (aka Adaptive code book or pitch predictor) to model the periodic part of the signal, and the innovative code book to model non-periodic part. The principal difference in CELP is the model used for the innovative codebook (like ACELP, vector sum excitation, Regular puslse excitaion...). So you need to know what kind of CELP is used in the code source you have, then look for the specic papers that concerns you papers. Hope this will help --- In , "ytjiang2002" <inzagghi@s...> wrote: > Dear all, > > I have downloaded the source of CELP. But I didn't find the papers to > explain the details of this algorithm. So I want to know where I can > find it? > > Thank you. |
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Reply by ●June 8, 20042004-06-08
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Thanks a lot! And I found a float-point source of CELP implementation. Have anyone seen the fixed point source of this algorithm's implementation --- In , "nacer_ghoul" <nacer_ghoul@y...> wrote: > hi jiang, > > acutally CELP coding is kind of familly of coding technics. The basic > of it is the use of an LP filter to model the vocal track and the > excitation for this filter. In most CELP coders the excitation is a > combination of long term pridiction (aka Adaptive code book or pitch > predictor) to model the periodic part of the signal, and the > innovative code book to model non-periodic part. The principal > difference in CELP is the model used for the innovative codebook > (like ACELP, vector sum excitation, Regular puslse excitaion...). > So you need to know what kind of CELP is used in the code source you > have, then look for the specic papers that concerns you papers. > > Hope this will help |
