Hello, I am working on implementing the G.726 ADPCM algorithm. In the C code obtained from ITU, there's a function called...

Hello, I am working on implementing the G.726 ADPCM algorithm. In the C code obtained from ITU, there's a function called "update". It is present in the "g72x.c" file. The first few lines of the function look like this: ylint = (short int)state

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...

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.

Hello, I am a beginner and trying to understand the working of G.723 ADPCM. I have been able to get all the C files from ITU...

Hello, I am a beginner and trying to understand the working of G.723 ADPCM. I have been able to get all the C files from ITU for the G.723 ADPCM. I have a basic question. According to the documentation and block diagram the first block converts the input si

Hello, I am trying to compute a solution using the least- square- error principle to an overdetermined system of equations. ...

Hello, I am trying to compute a solution using the least- square- error principle to an overdetermined system of equations. The equation is as below: Error = summation (y[n] ? summation (ai x[n-i] ) ).... in 'ai' term `i' is subscript where `n'

Hi everyone: I am working on the quantization of LSFs in G.723.1. I found that sometimes G.723.1 introduces a quite large ...

Hi everyone: I am working on the quantization of LSFs in G.723.1. I found that sometimes G.723.1 introduces a quite large percentage of outliers in the range of 2-4dB, for example, over 10%. So G.723.1 does not satisfy the transparent quantization? Is this correct? Could anyone

Dai, B. James- Add... MELP --> Mixed Excitation Linear Prediction -Jeff -------- Original Message -------- ...

Dai, B. James- Add... MELP --> Mixed Excitation Linear Prediction -Jeff -------- Original Message -------- Subject: Re: [speechcoding] Urgent Help Needed on CELP Date: Tue, 11 May 2004 19:07:08 +0800 (CST) From: dai Guangfa <

Dear all, I am currently working on the GSM FR speech encoder for my student final year and I am experiencing some problem with...

Dear all, I am currently working on the GSM FR speech encoder for my student final year and I am experiencing some problem with the ETSI GSM FR DTX test vectors: Even when I use the implementation described by GSM 06.32 (section A.2.1) for LAR and xmax averaging, the FR DTX

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...

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

Hi: I have a doubt: I know the Levinson-Durbin Algorithm (including the Generalized Levinson-Durbin Algorithm). Can anyone...

Hi: I have a doubt: I know the Levinson-Durbin Algorithm (including the Generalized Levinson-Durbin Algorithm). Can anyone tell me how does it differ from the previous version, i.e. the Levinson algorithm? Since, I don't want to read it, I will be glad if a

hi all, Can anyone tell me whatz the use of "PERCEPTUAL WEIGHTING FILTER" ? why its so necessary in speech coding?   ...

hi all, Can anyone tell me whatz the use of "PERCEPTUAL WEIGHTING FILTER" ? why its so necessary in speech coding?   thanx in advance. Mithun G N