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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
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Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
speech classification from LSF parameters
ee41gi - Aug 1 2007
How can i do classification of speech from the LSF parameteres given
from a split-band vocoder? I need to classify the speech into voiced
unvoiced and mixed excitation.I did a ... 
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 ... 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... melp synthesis silence output [4 Articles]
steh...@hotmail.com - Jul 11 2007
Hi,
I am using a codec with sampling frequency of 32KHz, I am decimating the input to get 8KHz frequency. These samples are then fed into the MELP Analysis. The ouput of melp anal... change the sampling rate of a codec [2 Articles]
khal...@hotmail.fr - Jul 6 2007
Hello everybody,
Can anyone tell me if it's possible to change the sampling rate for the G723 codec ( from 8KHz to 16KHz ) and how.
should this change BitsPerSample?
should... How to mix AMR files ? [2 Articles]
horiaciu - Jun 27 2007
Hello,
I am implementing a simple mixing program (i.e. create a new sound
file combinig two initial files - all the same format). I have
implemented this for WAV files (PCM)... a-law to linear [3 Articles]
itsmy_emale - Jun 18 2007
hi,
Can someone provide be the C code to convert from A-law to linear and
vice versa.
thanks,
robert
... PHD Thesis of scalable speech coding
mouloud Djamah - Jun 15 2007
Hi
I am looking for these thesis:
--------------------------------------------------------------------------------------------------
1-Lukasiak, "Techeniques for low-rate sca... 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... rega G.711
Mohan Reddy - Jun 7 2007
Hi
I am loking for a G.711 codec were do I get fixed point implememtation of
it
I want to use this to stream audio onto a network may be the internet, do i
need
Packet loss...