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Discussion Groups | Speech Coding | physical meaning of the LPC derived log area ratio coefficients?
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
physical meaning of the LPC derived log area ratio coefficients? - Chuping Liu - Apr 28 0:48:00 2004
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Hi All, The LPC derived log area ratio coefficients are defined as gi=log(1-ki/1+ki) where ki comes from the Durbin's iterative method. I am wondering whether gi/ki (PARCOR coefficients) physically correponds to which side of the vocal tract. Suppose the LPC is of p order from 1 to p. Thanks in advance. Chuping ===== Laughter is an instant vacation. --Milton Berle __________________________________ |
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Re: physical meaning of the LPC derived log area ratio coefficients? - Miguel Arjona Ramírez - Apr 28 14:42:00 2004
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Hi Chuping, I'll try to say something as a short answer: kp lies closer to the glottis while k1 is closer to the mouth or to the mic. Regards, Miguel Chuping Liu wrote: > > Hi All, > > The LPC derived log area ratio coefficients are > defined as gi=log(1-ki/1+ki) where ki comes from the > Durbin's iterative method. I am wondering whether > gi/ki (PARCOR coefficients) physically correponds to > which side of the vocal tract. Suppose the LPC is of p > order from 1 to p. Thanks in advance. > > Chuping > > ===== > Laughter is an instant vacation. > > --Milton Berle > > __________________________________ > > _____________________________________ |
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