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Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "lsp"
LSP in g.723.1 floating point
milamine - Aug 24 2003
hi all
i'm working on PLC with th g.723.1 vocoder
when checking out the LSP frequencies i came up with some strange
frquencies knowing that 0 <= LSP <= pi !!! ... 
there is error in the theory of line spectrum pair?
tms3...@yahoo.com.cn - May 29 2009
hello,everyone
I'm studying the IEEE article "LINE SPECTRUM PAIR (LSP) AND SPEECH DATA COMPRESSION" by author FRANK K. SOONG and BIING-H WANG JUANG.they proved that the LSP is pra... how lpc to lsp co-efficients ? [2 Articles]
tamij arassane - Oct 28 2002
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
... Help regarding conversion of LPC to LSP
nonu sidhu - Feb 25 2004
HI
I am doing CELP coding in Matlab.I have done the implementation till
evaluation of LPC coefficients.Now I need to convert them to LSP.
If somebody could help m... AMR LSP quantization [2 Articles]
subrata chatterjee - Jun 18 2002
hi all,
Anybody experienced in AMR speech coding can please
tell something about LSP quantization. Actually i have
tried to understand it from the standard but i ... General queries in G.723.1
Sameer Kibey - Jun 14 2002
Hello everyone!
Here are a few queries wrt G.723.1:
1.The G.723.1 recommendation specifies a total
algoritmic delay of 37.5 ms.Out of this 30 ms
is due to... c-code G.723.1 - to find the parameters
setumi71 - Dec 26 2003
Hi,
I have downloaded c-code for the codec G.723.1 (fixed point).
I don't absolutely succeed in finding in the code the variables
related to the LSP parameters, g... Few general queries on AMR [3 Articles]
subrata_etc - Apr 22 2002
hi friends,
I have just started working with AMR speech codec. I
would like post few general queries which are written
below....
1)What is the application of di... Re: Queries regarding G.723.1
- Sep 30 2001
Hi all,
I am working in a project on g723.1.I wanted to know the purpose of
converting the lpc coefficients to lsp frequencies.Also in the 4
subframes that ... C- code for G.723.1 and LSP coefficients, gain, ... [2 Articles]
setumi71 - Nov 20 2003
Hi,
I have downloaded c code for the codec (it is attached
with G.723.1 annex A, the version with fixed point).
How to find the coefficients LSP, the values of ga... Quantization of LSP /G.729 [3 Articles]
wnit...@yahoo.com - Aug 22 2006
hi all,
G.729 recommendation states:-to predict the values of LSF a 4th oreder MA is used.Two predictions are possible .the encoder chooses which one to use and indices it... problems in G 723.1
shanky_b_2001 - May 5 2002
Hi all,
I am facing few problems while debugging the Standard C code of
G 723.1 for TI processors.
Problems:
1) Even after disabling the High pass filter... Moving average Prediction Filter - G.729
pchakre - Jan 24 2002
Hello,
In the Section 3.2.4 - Quantization of the LSP coefficients (Pg. 12)
in ITU-T Recommendation G.729 documentation, we have to use two
switched 4th order MA ... robust low bit rate codec [2 Articles]
zhaohanwu - Sep 23 2005
I'm looking for a robust LP method in noisy environment (around 0dB),
which method can get better LP coefficient in harsh noisy background.
here is one method named "WLS... info reg g.729
gupta ksrc - Oct 4 2002
hello every body.
i am new member to this group.i have some doubts regarding g.729.
we r doing a project on g.729
we couldn't get clear idea regarding the a... Need info about the MELP bitstream format..? [3 Articles]
Khubaib - Feb 24 2004
Dear membes
I need to know the bitstream format of the MELP's 54 bit frame.?. I
know what are the different bits (the number of bits for different
parameters) in ... Re: change the sampling rate of a codec
"Phil Frisbie, Jr." - Jul 7 2007
On Thu, July 5, 2007 7:15 am, k...@hotmail.fr wrote:
> Hello everybody,
>
> Can anyone tell me if it's possible to change the sampling rate for the
> G723 codec ( from 8K... Identifying an ADPCM encoded file format [3 Articles]
braz...@easymail.hu - Mar 21 2007
I have just bought an voice recorder (Speed-Link PDR-3) but it contains just a windows converter to transform its own recorded voice files into wav/mp3 formats. I would like to use... Re: Needed reference on line spectrum pair representation of LPC coefficients
Shankar Shashi - Jan 31 2003
hi,
You could refer F.Soong and B.Juang, "Line Spectral Pair (LSP and Speech data
compression" ICASSP pp.1.10.1-1.10.4,1984
or refer the book by AM Kondoz on fund... Re: Low Bit Rate Coding
- Nov 16 1999
Dear Musafi,
I was checking the references I have on the MELP, and I found two
articles, which I have forgotten about, that maybe useful for your work:
[1] ... Re: FS-1016 CELP [2 Articles]
- Aug 11 2003
Fo smoothing purpose since your LSP is computed every frame instead of
every subframe for saving quantization bits purpose, in order to get LPC
coef. for each subfr... Split matrix and split vector quantization in CELP
mata mata - Aug 13 2003
Dear all,
I have builded matlab functions over split matrix (SMQ) and split vector
quantization (SVQ) in CELP
but I am not so sure about the results....
woul... Re: Determining sound intensity from G.729 parameters [2 Articles]
Phil - Nov 29 2002
Gentlemen:
To resolve the conflict: yes, I am trying to conserve MIPS. Were I
just dealing with one stream of sound at a time, the number of cycles
required fo...