Forums More speechcoding
ADPCM ITU C code
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
About CELP paper
inDear 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.
.wav input to g.723
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
Estimate LPC's
inHello, 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'
Quantization performance of LSFs in G.723.1
inHi 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
[Fwd: Re: Urgent Help Needed on CELP]
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 <
GSM Full Rate DTX test vectors
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
physical meaning of the LPC derived log area ratio coefficients?
inHi 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
Levinson v/s Levinson-Durbin
inHi: 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
perceptual..
inhi 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
Ask a Question to the DSPRelated community
To significantly increase your chances of receiving answers, please make sure to:
- Use a meaningful title
- Express your question clearly and well
- Do not use this forum to promote your product, service or business
- Write in clear, grammatical, correctly-spelled language
- Do not post content that violates a copyright