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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)
multi-stage vector quantization
madrid_k - Nov 20 2003
dear list,
im doing my thesis on quantization of speech parameters. i need more
information on multi-stage vector quantization. aside from the paper
by LeBlanc... 
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... 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... testing floating point versions of the NB-AMR and WB-AMR
sara_grassi - Nov 11 2003
Dear all,
I would like to know if for the floating point versions of the NB-AMR
and WB-AMR speech coders, there exist a standardized way of testing
the impleme... looking for an AES Convention paper
#ARIJIT BISWAS# - Nov 1 2003
Dear Multiple Recipients of the group "Speechcoding":
If anyone has the access to the AES Convention papers, I will be highly obliged
if he/she can send me... QCELP Codec Source Code
aydemird - Oct 31 2003
Hi,
I ve searched the list and read through the messages regarding the
QCELP source code requests. I ve found some links through the
messages but actually none is... Split Matrix Quantization
SARAT CHANDRA - Oct 15 2003
Hi guys,
can anyone point to resources (papers etc.) on "Spilt Vector
Quantization" / Algorithms ??
thanx
Sarat
... FS-1016 Adaptive Codebook
Ray McCarthy - Oct 14 2003
Hi All,
I'm having a bit of trouble with the adaptive codebook.From theory it seems that
the codebook is a 256 x 60 array,so to speak, but from the standard code it... [ PCM -ADPCM conversion & vice versa ]
Dhiraviam Natarajan - Oct 9 2003
Hi All,
I'm abt to implement ADPCM decoding/encoding in ADSP 2191.With a minimum
background in Communication Systems, I find it difficult to understand the ADPCM... Gain predicition in G729
adithya rao k - Oct 8 2003
Hiii,
In the G 729 encoder part the gain prediction block(3.9.1 in ITU document)
is confusing. I was not able to find the way to calculate the fixed codebook
g...