Sign in
Search speechcoding
Subscribe to speechcoding
speechcoding by Keywords
ACELP | ADPCM | AMBE | AMR | AMR-NB | CELP | Codebook | DTMF | G.723 | G.726 | G.729 | GSM | Interpolation | LPC | LSF | LSP | MELP | PCM | Perceptual | Pitch | PSOL | QCELP | Quantization | SMV | VAD | Vocoder
Discussion Groups
Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "729"
G.729 code in Matlab
Jeet Bookseller - Mar 14 2008
Hello,
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... 
Compression In G.729 [11 Articles]
bine...@gmail.com - Aug 17 2006
Hi all,
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... Difference among G.723, 729, 726 [2 Articles]
Ramya Desai - May 9 2005
Dear Experts,
I am new to this group and speech coding (But not to
DSP)
I want to know the details of G.723. But from ITU web
site its not available and it recomen... 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... G.729 bitstream file format [4 Articles]
rishi_ahuja - Nov 19 2003
Hi! All,
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
conversation.
Is th... questions about G.723.1 and G.729 [3 Articles]
Yidan Zhou - Dec 9 2002
Hello all,
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... Bandwidth expansion in G.723 and G.729 [2 Articles]
Cool Dsp - Jun 11 2003
Hello,
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:
The import... 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... G.729 Codec question [3 Articles]
³¯«a¥ô - Jan 12 2005
Hello Everybody,
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.... G.729 in Matlab [2 Articles]
omsarmaru - Aug 15 2003
Hi, everyone
Could someone help me locate Free Matlab source code for G.729?
Om
... On G.729 Perceptual weighting and Gain Quantisation [2 Articles]
Thenral p - Nov 9 2001
Hi all,
I am working on G.729 and when going thru' the C code I came across the
folowing:
In perceptual weighting filter to find the value of gamma2(weighting
p... help required on G.729
anand archak - Feb 20 2001
Hi All,
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
standa... Regarding LPC parameters in G.729
cshs100 - Nov 21 2003
Hi All,
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 ... DTMF in G.729 [4 Articles]
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.... Transcoder between G.729 & AMR & G.723.1
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... regarding speech.in file in G.729 [3 Articles]
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... Reg G.729A Speech coding [4 Articles]
arul rajan - Mar 22 2007
Hi everyone,
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 ... VAD
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
... File Size [2 Articles]
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... 8 bits samples G.729 [6 Articles]
T - Mar 20 2003
Hi list,
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'... 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... Regarding Test vectors
Thenral p - Dec 5 2001
Hi All,
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
the... Determining sound intensity from G.729 parameters [8 Articles]
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... reg. G.729 VAD
tallapragada bramara - Oct 7 2002
hello everybody,
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... what's the function of postfilter in G.729 decoder part? [2 Articles]
ytjiang2002 - Feb 26 2002
hi,
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... G.729 Implementation question
- Mar 20 2001
Hello,
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... 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 ... G.729 Speech Coding (Need Paper)
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
Technique... Changing DPF format in G.729
Satheesh P K - Nov 22 2005
Hi all,
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... 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... G.729 Decoder Output [4 Articles]
bine...@gmail.com - Jul 30 2006
Hi All,
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... Help needed: Documentation and test vectors for G.711,G.726,G.729,G.723.1
nasound - Jan 22 2002
Hi,
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... problems with SID bitstream [2 Articles]
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
Recomendatio... partial encryption of G.729 bitstream file
jayeshkumar makwana - Mar 7 2008
hi dear,
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... RE: G729a and G729 interoperability
Chuck Hutton - May 17 2008
Naveen:
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... Help Req on G.729/G.729A and G.729AB frame formats
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
across.
But in case... No Subject
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?
... Another question about G.723.1 and G.729
Yidan Zhou - Dec 12 2002
Hi all,
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... CS_ACELP information
beatriz rodriguez - Apr 18 2002
Hi, I´m working on G.729 but I don´t understand
exactly what is an conjugate structure codebook. Could
somebody give me a refernce.
Thanks in advance
... Re: how lpc to lsp co-efficients ?
Yidan Zhou - Oct 28 2002
Hi tamij,
I think the best way to know how to convert LPC to LSP is to read
the source code of G.729 and G.723.1. While reading the source code,
you can refer ITU...