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Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
PESQ
mouloud Djamah - Aug 29 2008
Hi
Someone to give me the link for dowloading the perceptual evaluation of speech software (seee referance below).
Thanks
“ITU, Perceptual Evaluation of Speech Quality (PESQ), ... 
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... Re: AMR-NB codec
Ashwin Chandrasekaran - Aug 6 2008
Thanks Dejun. By the way, so if I pack the actual encoded bits on a per fra=
me basis and save it as a .amr file, then would any player that plays 3GPP =
format audio files be ab... Re: AMR-NB codec [3 Articles]
Ashwin Chandrasekaran - Aug 5 2008
Hi Rama,
Sorry about the confusion. I actually meant the file at the output of the AMR-NB encoder alone (not the decoded output) . Anyway, thanks for taking time to answer my ... 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 & 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... AC'97 to G.729
persiaga7 - Aug 4 2008
Hi everyone
I have a FPGA board with ac97 (AD1885) on it and a mic input, and I
want to use G729 to encode speech. Is it possible to use the output of
AC'97 and then encode ... AMR-NB codec : [2 Articles]
ashwin_c29 - Aug 4 2008
Hi All,
Had a small doubt regarding the AMR codec. Why is the file size (file
obtained at the output of an AMR-NB codec) constant for all AMR rates
even though there is a di... harmonic noise shaping filter
ashwin_c29 - Aug 2 2008
Hi All,
I was wondering as to how the harmonic noise shaping filter improves
the performance of the G.723.1 codec. Does it like improve the pitch
harmonic structure as well an... About MSVQ design codebook
mouloud Djamah - Jul 28 2008
Hi
=20
I have questions and I hope that someone will reply me.=20
- I Know that for SVQ (Split vector quantization) design codebook for LSF =
(line spectral frequencies) quant...