Displaying 20 results from an estimated 400 matches similar to: "Getting at the LPC coefficients"
2007 Feb 02
1
Getting at the LPC coefficients
Hi Jean-Marc
I'm looking at the 1.0.5 source, and I'm not seeing an _spx_lpc(). There's
an _spx_autocorr(), which is in lpc.c and is called near the start of the
encoder function in nb_celp.c.
The encoder seems to call the autocorr() function, then calls wld() to do
something called Levinson-Durbin. Am I right in thinking that after the
call to wld(), the st->lpc[] array
2007 Feb 13
1
Hello Guys
hello everybody in this great mailing list , i have some difficulties to follow my code .
i solved some problems thanks to Carine Liang , but i still have one problem and i think it is fatal one.
when i encode the voice data in a wav file it is decoded without any errors it gives me 84 bytes wav file size for 139 kbytes wav audio data .Naturally i wanted to return my file back to its normal
2009 Sep 11
0
Getting at the LPC coefficients
Bonjour,
D?apr?s votre question ? Jean_Marc :
? Je m'int?resse ? la source 1.0.5, et je ne vois pas une _spx_lpc (). Il ya
une _spx_autocorr (), qui est en lpc.c et est appel? ? proximit? du d?part
de la
Codeur fonction dans nb_celp.c.
L'encodeur semble appeler la autocorr () la fonction, puis appelle wld ()
pour faire
quelque chose qui s'appelle Levinson-Durbin.
2012 Nov 20
2
[lattice] how to overlay a geographical map on a levelplot?
r-help lattice adepts:
I have a question which is somewhat geospatial, so I posted to r-sig-geo
rather than here:
https://stat.ethz.ch/pipermail/r-sig-geo/2012-November/016757.html
> summary: How to overlay a geographical map on each panel in a lattice
> (or Trellis), e.g., of levelplot's? Note I am not inquiring about
> creating choropleth maps[,]
which Sarkar 2008 covers quite
2006 Oct 31
2
2 questions, frame size and SPEEX_GET_LOOKAHEAD
Ok, let me first explain why 5ms matters, even they are 0's, in my
particular application.
I am working on a speech synthesis system. The basic idea is
concatenating pre-recorded phonemes or words into longer sentences. So
any missing or extra samples, even it is as short as 5~10ms, cause
very noticeable discontinuities.
I want to use speex to compress/decompress those pre-recorded
2006 Oct 31
1
2 questions, frame size and SPEEX_GET_LOOKAHEAD
Hi, Andras,
Thanks for the comments. Yes, I am aware of those issues. I probably
should have been more accurate on my usage of terms. Actually in my
project, the unit collection is a mixture of diphones and words.
However seems to me, these synthesizer specific issue is irrelevant to
my question about speex. As you said, i merely use speex as storage
methods. All I ask for is to get the
2005 Jul 04
1
mgcp fon behind NAT gw
Hi
I've a mgcp fon (swissvoice IP10s) behind a NAT router. Configured is
NAT for both in/out going on port 2427. Now I got the following mgcp
debug messages when i try "mgcp audit endpoint <endpoint>"
----------------------------------
from 172.16.98.57:2427
Verb: 'RSIP', Identifier: '5346', Endpoint: 'aaln/1@[192.168.2.3]',
Version: 'MGCP
2004 Aug 06
2
de-essing into speex?
are there plans to add "de-essing" as part of the speexenc procedure,
to make it possible to use lower quality compression without getting
those horrible computer-like "ess" sounds in the finished result?
like if you say "someone said the sun is shining", there is a lot of
ess sounds, and these will sound "computer-ish" at vbr qualities below
9.
i know
2004 Aug 06
3
de-essing into speex?
thanks for getting back to me,
i have uploaded a zip file containing some sound files that
demonstrates the issue.
http://www.bogus.net/~olav/ess.zip
this contains
s.mp3 original wav file (mono) converted to top-quality mp3 (370K)
s.wma windows media encoder with 19khz voice compression ( 62K)
s-2.spx speexenc --vbr --quality 2 on the wav file ( 63K)
s-9.spx
2008 Aug 19
1
address (nil), cause 'memory not mapped'
Dear users,
I got this problem and i don't have a clue of what it could be happening...
The context: i'm running a loop in which i extract information from a raster
map (I work with GRASS and R, using spgrass6 package), and rearrange it to
create a matrix. I've tried it with small maps and it works smoothly, but in
large maps I have to resort to saving data in the hard disk regularly
2007 Mar 30
7
Some additional attacks on Cookie Session
Aside from the replay attacks discussed, there are some other attack
vectors on the cookie_session store.
I appreciate (and admire!) Jeremy''s good humor on all of this:
> Planting the seed here led to quick ripening and plenty of pesticide.
> Thanks for the fish, all.
>
> jeremy
Anyway, here''s what we came up with:
1. Brute Force
SHA512 can be computed _very_ fast.
2008 Aug 12
3
Digital speech within 100 Hz bandwidth
Dear Sir,
Could you please forward this e-mail to your engineering department. I am a
ham radio person who wants to transmit from the Earth to the moon and back
to the Earth by phone not by Morris code. This will be a very weak signal. I
need an extra 13.8 dB of gain. Could you please help me distribute the
attached paper to someone who could take this project into the next level?
Please reply
2012 Sep 28
5
Apache : Listen on ports other than 80
Sent from my BlackBerry wireless device from MTN
-----Original Message-----
From: adekunleadekoya at gmail.com
Date: Fri, 28 Sep 2012 18:49:33
To: <CentOS at mailing.list>
Reply-To: adekunleadekoya at gmail.com
Subject: Apache : Listen on ports other than 80
Hi,
I just install centos 6.3 on my oracle virtualbox. I tried 2 configure apache 2 listen on port say 1010 but after adding a
2014 Nov 21
3
Upgrade
Hi!
I am running Version 2.3.2 together with liquid soap on a debian System.
everything works fine.
What is the easiest way to upgrade?
Save the config xml and web-folder, uninstall 2.3.2, install the latest
release,restore the config xml and the web-folder?
Are there known issues with the latest release and liquid soap?
Thank you very much!
Peter Roehl
--
Peter R?hl
Phone: 0361
2006 Oct 31
0
2 questions, frame size and SPEEX_GET_LOOKAHEAD
[At the risk of educating you about something you might already know]
Natural speech in most human languages gradually changes from one
phoneme to the next.
Concatenating phonemes together from a fixed, prerecorded, unflexible
set would give rise to abrupt changes between them (both in phoneme
quality and in pitch), and thus make the resulting speech hard to
understand and/or uncomfortable
2006 Feb 08
1
Speex Command line, Changing the LPC order and modifying the codebook
Hi,
can someone help me understand and experiment with Speex in a better way than my knowledge. I want to change the LPC filter order of the Speex algorithm. I think I need to change the LPC order( or lpcSize) in modes.c file. but to make it work I need to modify the codebook also, can someone tell me how to go about changing the codebook entries to support the changed order of prediction.
2006 Nov 18
1
negative LPC shift
>From the FLAC format description:
<5> Quantized linear predictor coefficient shift needed in bits
(NOTE: this number is signed two's-complement).
What happens when the shift is negative?
Problem is that libFLAC decoder (and possibly all other decoders) uses
always '>>' operator and this operator shifts only to right.
(int)x >> -1 is the same as (int)x
2011 Jul 19
0
Using line spectral pairs for LPC quantization
Dear Stefan,
In the paper "Improved Forward-Adaptive Prediction for MPEG-4 Audio Lossless Coding", a non-linear compander is applied to the parcor coefficients prior to quantization. This compander is designed in order to minimize quantization error, especially for magnitudes close to unity.
If you determine the typical distribution of magnitudes of the LPC coefficients, you could
2014 Apr 09
1
[PATCH] Suppress MSVS warnings for lpc.c
When compiling lpc.c for x86-64 architecture MSVS issues warnings:
warning C4028: formal parameter _N_ different from declaration
because of flac_restrict modifier. This patch suppresses these warnings.
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2014 Dec 03
2
[PATCH] Improve LPC order guess
Op 03-12-14 om 15:49 schreef Olivier Tristan:
> [...]
> If you want to check this on a single piano note, I would be
> happy to know if this improves the monophonic use case as well.
This sample is indeed a case where the retuning of FLAC 1.3.1
shows a severe regression. It seems the patch does work quite
well in this case, but it does not fully fix the regression.
FLAC 1.3.0 -5: