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Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "lpc"
help on lpc
Zij Nam - Jan 2 2002
Hi
I want to implement lpc (openLpc from
futuredynamics (I suppose u are familiar of that lpc
source code)).
does any body know of any fixed point minimal... 
voice-excited LPC and Plain LPC
phitenk - Apr 23 2008
hi, all i'm new in this group. please help me solve my thesis problem.
I want to know about differences between voice-excited LPC and Plain
LPC? is plain LPC same as LPC 10?! tha... Help~~~ LPC code [2 Articles]
nyia...@gmail.com - Apr 12 2007
I'm currently doing my project about implementation of voice codec in DSK C5510
i'm using G723.1 as my reference of LPC
but i found that is very hard for me to understand the c... CS-ACELP g.729 (interpolated LPC)
Lingadevaru T S - Jan 25 2002
Hi all,
My Q is Why we use interpolated LPC coeff for the first subframe synthesis
instead of Quantized LPC coeff itself?
I mean to ask, In G.729 CS-ACELP code... How to plot LPC spectrum [2 Articles]
ee41gi - Jul 31 2007
Hi guys
I have a 10th order LPC with coefficients
[1.000000
-0.473154
0.638717
-0.322174
0.243055
-0.210219
0.417031
-0.452547
0.459508
-0.128858]
and i want to plot ... Ask for the peper: "The Government Standard Linear Predictive Coding Algorithm: LPC-10".
³Â½¨Ãú - Aug 30 2008
Hi, all:
Does someone of this group have this paper:
"The Government Standard Linear Predictive Coding Algorithm: LPC-10".
Thomas E. Tremain. Speech Technology Magazin... Recursive least squares and LPC
kartikaye83 - Aug 5 2008
Hi All,
I have implemented a 10th order Recursive Least Squares filter on
Matlab for speech and am comparing the weights thus obtained with the
weights using the LPC function.... LPC
ec04...@nitc.ac.in - Jun 13 2007
Hello,
I am working on LPC for full band signals. Could someone help me find the prediction gain for fullband signals(speech). I used the prolpc.m code for the analysis.
Th... LPC & VELP SNR + VELP synthesizer
phitenk - Aug 4 2008
Hi,
i need snr comparision of lpc-10 and voice-excited LPC (VELP) to show
that velp is better as compared to lpc.
and why in velp synthesizer, we must use DCT+noise and don't... physical meaning of the LPC derived log area ratio coefficients? [2 Articles]
Chuping Liu - Apr 28 2004
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 ... searching for existing codebooks for CELP or even LPC coeff
michel memeteau - Nov 25 2002
Hi I m developping a speech synthetiser on a TIc5402 and as
I tried to compute my own LPC coefficients with Matlab but
the result on LPC 10 sounds quite bad...... ... LPC-10 sample files and tools
- Feb 28 2002
Hi,
I am a member of an international home-computer-community for the vintage
TI99....(look at TI99-4a on Yahoogroups), this old system used the TMS5200/5220
S... 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
------------------------------------
... Help regarding Cepstral Coeffs (LPCC) [2 Articles]
Abhijeet Joshi - Feb 23 2004
Hi ,
I need some help regarding getting Cepstral coeffs from LPC coeffs. I have found
2 variation for the algo to do this.
1) One algo (given in fundamentals of S... {need help}getting start to LPC coding [2 Articles]
mojtaba mahdavi - Aug 19 2003
Hi all dears.
I am doing a project on vocoders[MELP]. But I am new
to this field and I have not much time to go around.
NOW
Can anybody suggest me some th... LPC analysis window [2 Articles]
#ARIJIT BISWAS# - May 15 2008
Hi:
Which is a better LPC analysis window? Hamming or Hanning?
Or, it doesn't matter?
Regards,
~Arijit
------------------------------------
... preemphasis filter, FIR, IIR [2 Articles]
phitenk - Aug 7 2008
hy all,
1. I want to ask, how to find the preemp coefficient 15/16=0.98..??
2. why in LPC anlysis we using FIR & in LPC synthesis we use IIR
filter? what is the reason?
than... 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
... Computationally Efficient LPC Coefficients Estimation Methods
kart...@yahoo.co.in - Jul 11 2006
Hi All,
I am a new member of this group. I am doing my MTech from NIT Warangal. I am trying to implement LPC Coefficients Estimation in fixed point arithmetic and looking for a ... LPC-10 Coder, Matlab programming
devilal sharma - Jan 31 2004
Hi all
can anyone of you tell me where I can get codes for
LPC-10 algorithm written in Matlab,C,C++
or the compact algorithm for this.
Please send me the lin... LPC to Autocorrelation Conversion
rahul_parthasarthy - Dec 31 2003
Hello Everybody,
I want to write a program in C/C++ which estimates the
autocorrelation values from the Linear Prediction Coefficients(LPC).
I would be high... 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... 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... Vector quantization of speech
abhisheksgumadi - May 24 2006
Hi,
I am working on low bit rate speech coding.
I have efficiently quantized the lpc coefficients using vector
quantization methods. I am looking at an efficient way of quantizi... AMR-NB [2 Articles]
mani_assudani - Feb 28 2005
Hi friends,
I have implemented complete AMR-NB Enc-Dec on proprietary DSP chip.
As we know AMR-NB works on 8 rates from 12.2kb/s to 4.75kb/s.
One thin... DOD LPC 10 standar [3 Articles]
Eris Ristemena - Jul 19 1999
ok, nice to know this mail group still working.
I am currently doing a project for my Bsc degree, its about Implementation
of speech coding based on LPC 10 using DS... Needed reference on line spectrum pair representation of LPC coefficients [3 Articles]
vijay kura - Jan 30 2003
Hello,
My friends and scholors,
I am looking for the reference on "line spectrum pairs representation
of LPC coeeficients"... If anybody have references on ... 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... 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... need help about LPC 10 [2 Articles]
Eris Ristemena - Feb 28 2000
hi all,
sorry to disturb you again with some silly questions, but i really hit a big
rock here .
1) the vocal tract of speech production can be modeled by LPC ... All pole LPC [5 Articles]
Harshad Warnekar - Apr 29 2002
Hi,
1. According to statement given in book "Digital Speech" by
A.M.Kondoz:
"The LPC spectral envelope matches the signal spectrum much better in
the spec... 50th order LPC [3 Articles]
Bhanu Prakash - May 7 2002
Hi Hari,
What ever you have said may be applicable for processing music signals(may be
MP3).But G.728 is a speech codec whose inputs are sampled at 8khz .As a ma... ill-conditioning in LPC
#ARIJIT BISWAS# - Nov 20 2003
Dear multiple recipients of the Group "Speech coding":
Presently, I am doing some simulations on LPC-based speech coders. I am facing
the ill-conditioning ... Re: high inteligibility on residual signal [2 Articles]
- Nov 15 1999
Dear Eris,
I think it is perfectly normal that the LPC residual has kept most of
its intelligibility. I have observed (heard) this myself, during my
work, and ... Scaling Data for LPC [2 Articles]
mgencarellli - Aug 14 2002
Hi,
I am developing code for a LPC using C6711 dsk.
Could someone tell me if the raw values read from AD535 codec need to
be scaled to +1 to -1 range from the ... linear prediction
bcff...@yahoo.fr - Jan 7 2006
can any one tell me how to use lpc technics to reconstruct clipped signal with matlab
... 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... 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 ... Reconstructing Speech
kobby70 - Jan 9 2008
I am new to Signal Processing. How do I reconstruct the speech
(synthesized), after determining the Pitch, the LPC coefficients, and
the Gain? Thanks in advance.
...