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Discussion Groups | Speech Coding
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Search Results for "interpolation"
Re: windowed sinc interpolation using FIR filter
wang...@163.com - Apr 25 2006
Hi,
It means that FIR filter is designed using truncated sinc function by hamming window. This FIR filter corresponds to a low-pass linear phase filter and is used to interpo... 
about waveform interpolation [2 Articles]
rejoicenana - Jan 16 2002
hello all:
I have a question.My boss want me to design a codec using waveform
interpolation at 600bit/s, Can you give me some useful advise?
Do you think that it ... windowed sinc interpolation using FIR filter
mata mata - Sep 19 2003
dear All,
I have some difficulties in understanding windowed sinc interpolation using FIR
filter
in adaptive codebook search process of CELP...(g729)
anyo... waveform interpolation coder with accurate reconstruction [2 Articles]
empush2000 - Sep 21 2003
Hi everyone,
I am currently working on waveform interpolative speech coding. I
exploit the usual scheme, but it doesn't provide accurate (perfect)
waveform recons... Re: speech coding with DFT?
Vesa Ruoppila - Oct 12 1999
Hello,
There are several methods particularly for low bit rate
speech coding which utilize the DFT. For example, in waveform
interpolation coding the DFT is... waveform interpolation [3 Articles]
dr_simic - Sep 30 2003
I'm trying to implement WI codec,for now just layer I(without quantisation),as
it is described in Eddie Choy's thesis,but I don't get perfectly sounding
decoded spe... melp2400 to melp1200, interpolation
steh...@hotmail.com - Jul 2 2008
Hi,
I have converted my speech application from melp2400 to melp1200. I was using fir filter to convert 8KHz speech to 32KHz. Should I need to change the filter for melp1200??? I ... 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... Sinusoidal analysis and synthesis of speech
Amit Kale - Mar 10 2005
Hi
I m working on a matlab project where i have to model speech signal as sum
of sinusoids. The idea is derived from 1986 ICASSP paper by T.F. Quatieri
an... 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... Re: logarithm algorithm
sara grassi - Aug 8 2002
> Message: 2
> Date: Tue, 6 Aug 2002 05:14:27 -0700 (PDT)
> From: gautam moharir <>
> Subject: logarithm algorithm
>
> Hi
> I am working on G729 implemen... Spectral Band Replication (SBR)
#ARIJIT BISWAS# - Aug 5 2004
Dear multiple recipients of the list:
I was thinking about the Spectral Band Replication (from Coding Technologies):
http://www.codingtechnologies.com... Redundant codes in ITU-T G729A?? [2 Articles]
chinwee_kwek - Aug 5 2002
Dear all,
I'm a novice on speech codec and recently just started on
implementation and optimization of the G729A codec.
However, while doing a coverage checkin... RE: conversion
David M. Jack - May 29 2003
In order to do this efficiently you need to perform the conversion in
multiuple stages
See here :
http://www.soundslogical.com/support/resample/documentat... RE: [audiodsp] conversion
- May 28 2003
The answer from harishankar is not quite correct. Theory tells the
following:
Re-sampling from 44100 Hz to 48000 Hz:
1) Up-sample by expansion factor of 160... Re: FS-1016 CELP [2 Articles]
- Aug 11 2003
Fo smoothing purpose since your LSP is computed every frame instead of
every subframe for saving quantization bits purpose, in order to get LPC
coef. for each subfr... Re: Speech reconstruction from spectrum.
Khaled El-Maleh - Oct 22 1999
This is an interesting issue and let me tell you some of
my own experience. (but be patient and read to the end)
Read these references about signal reconstruc... RE: some doubts
Vesa Ruoppila - May 15 2000
Tilak and others,
The window has to be chosen taking into account that the actual
synthesis filter is formed for every subframe by interpolating
between the... regading PWI-ZFE speech coder
ravichandra reddy - Aug 29 2003
hi,
i completed my M.tech in DSP. I did my project on " Implementation of Mixed
Multi-Band PrototypeWaveform Interpolation-Zinc Function Excitation
(MMBE-PWI-ZFE)...