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Discussion Groups
Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "celp"
Regarding CELP architecture
madhusudhan surya - Aug 18 2001
Hi,
Most of the celp coders today are implemented in DSP
platforms and I didnt come across vlsi implementation
of this celp coders.If anybody have any information... 
Regarding algebraic codebook search of CELP
mata mata - Aug 20 2003
Hi all,
did anyone had builded a matlab function of algebraic codebook search in CELP ?
is it possible to build a simulation program of CELP using matlab ?
... [Fwd: Re: Urgent Help Needed on CELP]
Jeff Brower - May 11 2004
Dai, B. James-
Add...
MELP --> Mixed Excitation Linear Prediction
-Jeff
-------- Original Message --------
Subject: Re: [speechcoding] Urgent H... CELP IN SIMULINK
neeta chapatwala - Feb 20 2008
Hello,
I am doing M.Tech. project on CELP in real time using DSP kit TMS320c6713
Note that I had refer CELP demo given in simulink.
I am using simple gaussian codeboo... CELP using VC++ [3 Articles]
yaso21101975 - Jan 8 2007
hi all
I am working on a project on audio compression using code excited
linear prediction (CELP) techniques. My aim is to design a basic
working CELP codec using visual c++ und... celp/fastica/simulink
nice...@hotmail.com - Oct 18 2005
Dear all:
1. I need CELP / MELP source code or program compatible with windows OS.
2. I am implementing a datahiding technique (echo data hiding technique) using simulink... About CELP paper [3 Articles]
ytjiang2002 - Jun 4 2004
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? ... CELP/MELP [2 Articles]
anona_ahmed - Sep 21 2005
hi all:
i have a speech file 8KHZ and 16bit/ sample, 128kbps.
what's the convenient CELP algorithm for this bit rate for the best
quality.
where can i find the souce... snr estimation
haiB...@rediffmail.com - Jun 5 2008
Hi,
i need snr comparision of lpc-10 and celp to show that celp is better as compared to lpc.can any one help.
Bhargavi
------------------------------------
... g728
aryo tejo handoko - Oct 7 2000
i am interesting in speech coding, i have a few question about g728
1. in LD CELP the predictor coefficients, the excitation are updated
my question is, what ... Help need on LPC10e and CELP matlab code
francisspeech - Jun 29 2005
Dear all,
I was trying to download the LPC10e and CELP matlab code from
www.cysip.com (under "useful DSP links"), but somehow the fill form
doesn't work for me. I am wo... Regarding Vector Quantization in CELP coding [3 Articles]
mata mata - Jul 7 2003
hi All...:)
anyone know about how to make a codebook in Vector Quantization used in CELP
coding ? how to implement Linde, Buzo, Gray (LBG) Algorithm ?
th... Patent Free low-bitrate codecs?
gl - Jan 4 2001
I'm just starting to get involved in speech processing/coding, and I'm
trying to find low-bitrate patent-free codecs, around 4.8kbit and below.
I haven't been... My accuracy for GSM and CELP(4.8kbs) Is Low. Why?
Nash - Oct 17 2006
im new to speech coding. Currently im trying to calculate speech
recognition accuracy for TIMIT corpus which is coded using GSM and
CELP 4.8kbps coder. im using HTK toolkit.
... Help on matlab source code for LPC10, LPC10e, CELP, etc !
francisspeech - Jun 28 2005
Dear all,
I need the matlab source code for low bit rate coders such as LPC10,
LPC10e, CELP, and etc. Does anybody have the code available or can
give me some help?
T... Re: statistical characteristics ACELP [2 Articles]
nacer_ghoul - Mar 4 2008
Hi mehdi,
You should be more specific about your question, what do you mean by
"statistical characteristics" ? The ACELP differs from other CELP-like
algorithms by the way the... Regarding implementation!!!
madhusudhan surya - Dec 23 2001
hi ,
Presently i am doing a project "Development of
Generic Architecture for CELP algorithms"
My questions???
-------------
why most of the speech codin... celp 4.8 kbps
aryo tejo handoko - Dec 23 2000
Hi all,
I am interested in the knowing the computational complexity of
existing celp 4.8 kbps optimized implementations (either commercial or form
research
g... Urgent Help Needed on CELP [3 Articles]
B James - May 10 2004
Hi, What is diff between CELP ACELP & RCELP? What is meaning of zero excitation to synthesis filter in case of CELP, will the output not be zero corresponding to... pitch predictor in celp [5 Articles]
tunkeat - Feb 21 2005
hi all,
i am puzzled about the use of long-time predictor in celp.
i see in some implementations, there is a long-time predictor (ltp)
but in others, eg fs-... No Subject
- Aug 3 1999
Is there any one who can tell me something about RCELP- Relaxation CELP. what's
the difference between RCELP and the other CELP algorithm?
Thanks.
____________... Design of basic CELP codec [3 Articles]
Amit Solanki - Dec 18 2006
I am working on a project on audio compression using code excited
linear prediction (CELP) techniques. My aim is to design a basic
working CELP codec in matlab. Since audio proce... lpc10 vs celp [2 Articles]
dunjie17 - Jan 18 2005
hi all,
am new to speech coding and trying to understand the
principles. stumbled upon this website:
http://svr-www.eng.cam.ac.uk/~ajr/SA95/node87.htm... FS-1016 CELP [3 Articles]
Ray Mc Carthy - Aug 11 2003
Hi All,
I am working with the FS-1016 4.8kb/s CELP coder but I cant understand why the
LSP's are interpolated for every subframe.Can someone tell me is there a
sp... G.721vsG.729 [2 Articles]
Prateek Shrivastava - Mar 23 2003
Hi guys,
I am doing a project, comparing ADPCM & CELP.
For this i have chosen G.721 for ADPCM & G.729 standard for CELP.
In these,
1)What are the parameters tha... Technical Information Bulletin for the FS 1016 CELP Coder
Ray McCarthy - Sep 30 2003
Hi All,
Does anyone have a copy of the Technical Information Bulletin for the FS 1016
CELP Coder? If so, could you please forward it onto me.
Regards,
Ray.
... About Mean-removed LSF vector and quantization of LSF coefficient in CELP coding
cherrymata - Nov 12 2003
Dear All,
I have some difficulties in understanding CELP coding process,
one of them is about Mean-removed LSF vector and quantization of LSF
coefficient (ETSI... where to buy the CELP fixed point source? [2 Articles]
ytjiang2002 - Aug 16 2004
Free is better. But I only found float piont free source.
Thank you.
... AMR
phil_lancs2002 - Apr 9 2002
Hey
I'm working on a CELP AMR codec. The coder uses previous samples of
the input speech, for windowing or creating the past excitation.
So, my question is:... 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... Re: g.728 implementation
Jeff Brower - May 17 2008
Abhishek-
> hi sir,
> in my engineering curriculum i m working on project "implementation of
> ld-celp(g.728) on the dsp processor tms320c6713".sir i m unable to do ... re:difference B/W g723,g729,g726
chetan k - May 11 2005
Hi,
G723 & G729 are CELP based codecs, but G726 is ADPCM
based codec. The basic difference is the method for
coding used, Data rate supported and application for
which i... Speech Coding Algotirhm applied in 8-bit controller
Ken Chan - Nov 7 2001
Hi,
I am looking for speech coding algorithm, like ADPCM, ASPCM, CELP
which can be applied most popular 8-bit controller without any patents
and which are open... Zero Excitation
B James - Jan 12 2004
In a CELP coder given a set of LPC coeff, without any other initial conditions
How can we generate (s[n]-r[n]), using zero excitation.
(or how to extract informatio... windowed sinc interpolation using FIR filter
mata mata - Sep 19 2003
dear All,
I have some difficulties in understanding windowed sinc interpolation using FIR
filter
in adaptive codebook search process of CELP...(g729)
anyo... Advantages & Disadvantages of ACELP & QCELP [2 Articles]
prob...@yahoo.com - Dec 29 2006
Hi, my name is Novi, I would like to know the advantages of disadvantages of ACELP & QCELP, when compared to CELP. Can anyone please tell me? Thank you very much..
... Need source code of QCELP [2 Articles]
- Oct 12 1999
Hi all,
I am intend to learn much about variable rate speech coding, and I take
QCELP (Qualcomm CELP) to study.I am looking for any good reference that
have... Re: waveform interpolation coder with accurate reconstruction
Ilya Druker - Sep 23 2003
Hi,
Unlike the speech coders from the CELP-family WI is a parametric
coder. The more bits you "invest" in CELP-like coder the higher
accuracy of the waveform r... G726 Quality improvement [3 Articles]
Raj Baretto - Aug 21 2003
Hi ,
I just finished implemeting G726. I found that the quality is
very low. Can some one give me sugesstion about improving the
quality of G.726. I was told t... CELP - analysed and synthesized filter [2 Articles]
dunjie17 - Jan 27 2005
hi,
I read that the "analysed" filter is a FIR
(stability is ensure) but the synthesized
filter is a IIR filter (inverse filter).
is that right? I do...