Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "729"
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Jeet Bookseller - Mar 14 2008
I am doing my graduation project on G.729
It would be great if I could get code in Matlab for G.729
implementation... Or else just some guidance regarding ho...
bine...@gmail.com - Aug 17 2006
Now I am working with ITU-T's G.729 recommentation. I have one doubt.As you know In G.729 Codec the compression rate is 1/8. But here in 10 ms, 80 words(160 bytes) a...
Ramya Desai - May 9 2005
I am new to this group and speech coding (But not to
I want to know the details of G.723. But from ITU web
site its not available and it recomen...
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...
rishi_ahuja - Nov 19 2003
I have captured a G.729 call using Ethereal (in rtpdump payload
format) and would like to use ITU G.729 decoder to decode the
bnay...@gmail.com - Jun 4 2010
While trying to implement g.729 coder on some raw file the output it gives is basically a bitstream file I mean a binary file. The binary file actually contains some binary data st...
Yidan Zhou - Dec 9 2002
After I went through the standard document of G.723.1 and G.729,
there are several technical terms I don't understand.
1. In G.723.1, what is the combi...
Cool Dsp - Jun 11 2003
I am new to Speech Coding. I was reading through the ITU-T specs for G.723 and
G.729. Can anyone enlighten me on the following aspects:
wnit...@yahoo.com - Aug 22 2006
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...
³¯«a¥ô - Jan 12 2005
I prepare a pcm file that format is 16bit 8khz mono, the
file size is 49200 bytes. After encode to G.729 format
file, the size is 48000 bytes....
omsarmaru - Aug 15 2003
Could someone help me locate Free Matlab source code for G.729?
Thenral p - Nov 9 2001
I am working on G.729 and when going thru' the C code I came across the
In perceptual weighting filter to find the value of gamma2(weighting
anand archak - Feb 20 2001
I am a new entrant 2 this group.I am working on
G.729AB .So,i would like to know how to go about
understanding the technical details of the g.729
cshs100 - Nov 21 2003
I am a beginner in speech processing area, In G.729 fixed point
algorithm implementation, in the function Get_lsp_pol(),line 88,i.e
after 2 for loop, why ...
Bob Tausworthe - Feb 16 2000
I am reading a spec that states that G.729 is capable of conveying
DTMF. Is this correct? I would have thought that G.711 would be required
to accurately code DTMF....
gray_1024 - Mar 28 2003
I'm now doing a transcoder between G.729 & G.723.1.
Considering the conversion of pitch delay, since G.723.1 encodes
speech with 30ms frames, while G.729 with 20...
gupta ksrc - Nov 7 2002
hi everybody i have small doubt regarding g.729 implementation ...
while i am trying to simulate the code given by ITU with speech.in file(which is
given in g729...
arul rajan - Mar 22 2007
I am from SSN college of engg doing ME .
I need to use the g.729 codec for a PG project in Blackfin ADSP BF533
Could u send me the g.729 encoding / decoding ...
lmaigrot - Mar 6 2002
I'm a student and i'm working on voice activity detection.
I use ITU-T recommendation G-729 annexe B.
Some equations are missing on my G-729.I'm looking for some
nir....@gmail.com - Nov 23 2009
I saw that the G.729 has 3+3+4+4 bit to 4 type of gains (Codebook gains)
does these bit can serve as an indication to frame energy?
than...@askcalea.net - Jul 24 2007
I got the G 729 ITU-T C code compiled and running. I'm confused about two issues though.
1) Why is the file size of the encoder output the same/or about same as the input. (I u...
T - Mar 20 2003
I'm involved in integrating G.729 algorithm.
I know that G.729 encodes with 16 bits samples but our system provides 8 bits input, so I'...
Prateek Shrivastava - Mar 23 2003
I am doing a project, comparing ADPCM & CELP.
For this i have chosen G.721 for ADPCM & G.729 standard for CELP.
1)What are the parameters tha...
Thenral p - Dec 5 2001
I have been working on a floating point version for the G.729 fixed point
code.The test vector I have been using is the "speech.in" file supplied with
furiousgame - Nov 24 2002
Using only the G.729 parameters (codebook values, codebook indices,
pitch periods, and pitch and codebook gains) or the line spectral
pairs, how can the intensity o...
tallapragada bramara - Oct 7 2002
i am a new member to this group.
in the G.729 Annex B, there is a comparision of full band energy with 15 db to
decide whether the frame is...
ytjiang2002 - Feb 26 2002
I'm new to speech coding. I have read the recommedation of G.729 and
I can't understand the postfilter in decoder part. And i cut the
postfilter in decoder ro...
- Mar 20 2001
I am having a few problems with the G.729A:
I downloaded G.729 Annex A from ITU's web site and when trying to
implement it for some reason all the encod...
pchakre - Jan 24 2002
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 ...
mahdavi hassan - Sep 20 2003
Hi dear all.
I am doing a project on implementation G.729 speech
coding on DSP processor...
Now I want to undrestand "Assembly Code Optimization
Satheesh P K - Nov 22 2005
The DPF operations in the GSM G.729 codec can be done more efficiently in ARM by directly using Q.31 numbers, instead of converting them to DPF format numbers by call...
Lingadevaru T S - Jan 25 2002
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...
bine...@gmail.com - Jul 30 2006
Now I am working with ITU-T's G.729 Recommendation.My input to encoder is one .wav file and got .bit file as output. Then I gave this .bit file as input to the Decode...
nasound - Jan 22 2002
I need to implement G.711,G.726,G.729,G.723.1.
But the documentations and test software/vectors
all add up to pretty much $$$money.
I'll like to know whe...
Armen Baloyan - Dec 16 2002
hi all, i'm implementing VAD/CNG/DTX algorithm and have problems with SID
bitstream, in Comfort Noise payload draft-ietf-avt-rtp-cn-05.txt and in ITU-T
jayeshkumar makwana - Mar 7 2008
i am doing my masters in digital signal processing and now am doing my theses on watermarking for compressed speech signals. But, I have some problem in partial encryptio...
Chuck Hutton - May 17 2008
You are quite correct and I simply had forgotten about the encoder changes
which did indeed have reduced MIPS of about the same amount as the decoder.
As for the sw...
Nagarjuna - Nov 29 2004
The G.729/G.729A has 10 bytes of encoded info per 10ms frame. While
doing RTP packetization we can simply use these 10 bytes and send
But in case...
Lin Lin - Dec 31 1969
Who can tell me where I can download the ITU recommendation G.729 including
annex and code free of charge?
Yidan Zhou - Dec 12 2002
I have got the answers to the previous three questions.
1. The combinatorial coding is an alternative to
algebraic coding. It is a specialized branch of c...