Displaying 20 results from an estimated 800 matches similar to: "Encoding mode"
2006 Apr 19
1
HW-Speex: Fileformat and encoding process
Hi
I have just written a small c programm which reads in speex files and outputs
them as asci text numbers. This is necessary as for writing a hw testbench
for decoding tests, since thy only read ascii files :-(.I can't read the
bitrate properly from the header file. It's allways -1. Please see example
below and attached c programm. I wan't to check for a fixed bitrate (8000).
2005 Nov 30
1
RTP profile draft!
Hi Jean-Marc and list,
I'm trying to negotiate speex with SIP/SDP and get some trouble
understanding the "mode" parameter:
mode: Speex encoding mode. Can be {1,2,3,4,5,6,any} defaults to
3 in narrowband, 6 in wide and ultra-wide.
Is mode equivalent to the "quality" parameter of speex?
In this case, I don't understand why mode is not from 1 to 10...
Just
2004 Aug 06
1
Speex configuration
Hi,
I'm trying to cover all Speex configuration options to set
quality/mode/bitrate
in my application and I was wondering if the following all makes sense:
- abr_bitrate
- use average bitrate and set it using bitrate parameter
- SPEEX_SET_ABR
- cbr_bitrate
- use constant bitrate and set it using bitrate parameter
- SPEEX_SET_BITRATE
- cbr_mode
- use constant bitrate and
2004 Aug 06
4
Speex 1.0 RC3 is out
Hi,
Just to let you know that Speex 1.0 RC3 is out. It should be the last RC
until 1.0 is released (tentative release date is March 16th). Please
give RC3 a try and report bugs so they can be fixed before 1.0. As
usual, download from http://www.speex.org/download.html
Jean-Marc
--
Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec,
2005 Jan 03
2
Speex codec for 8Kbps setting ?
Hi,
I am looking how to setup speex codec in codecs.conf for 8 Kbps and 6 Kbps.
In config file are many parameters for setting.
I don't know what is need to change for narrowbad like 8 Kbps and 6 kbps.
Any suggestion?
[speex]
;0-10
quality => 4
;0-10
complexity => 4
; true / false
enhancement => true
; true / false
vad => false
; true / false
vbr => false
; 0 = off, otherwise,
2004 Aug 06
2
Speex modes
Hi,
I'm about finished developing a QuickTime component that supports Speex
(on
MacOS X and Windows).. As it is now the user can set complexity
(SPEEX_SET_COMPLEXITY) and quality (SPEEX_SET_QUALITY /
SPEEX_SET_VBR_QUALITY) and to wether to use VBR or not. Will these
options
make it possible to produce all combinations of bitrates/qualities? Or
should I also use
2004 Aug 06
1
About reducing noise..
Hello,
When I decode a recoded sound encoded by speex, it has too much noise.
The noise is "slightly" reduced if I set the quality to 10. How do I get
rid of this noise? The code is as follows.
For encoding .
state = speex_encoder_init ( &speex_nb_mode );
tmp = 7;
speex_encoder_ctl ( state, SPEEX_SET_MODE, &tmp);
// set quality
tmp = 10;
speex_encoder_ctl ( state,
2005 Feb 27
2
SPEEX_GET_QUALITY
To close debian bug #271052,
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=271052
I went ahead and did the following:
$ diff -u ../original/speex-1.1.6/libspeex/nb_celp.c libspeex/nb_celp.c
--- ../original/speex-1.1.6/libspeex/nb_celp.c 2004-07-15 01:16:52.000000000 -0400
+++ libspeex/nb_celp.c 2005-02-27 08:24:49.000000000 -0500
@@ -1746,6 +1746,21 @@
st->submodeSelect =
2003 Dec 21
1
Get message "cannot do complex assignments in base namespace" error
I am constantly running into the problem where I get
error messages like "cannot do complex assignments in
base namespace".
It might have something to do with the fact that R has
not started up completely, since I am trying to run
some R script using Rterm < Rscript.R.
When I perform the same script in a Interactive R
session, the R script has no problem with the
assignments that it
2007 Dec 06
2
Some question about speexcodex 1.2 beta2 on linux
Hi,
I am an user of speex codec.Can I ask some question about the speexcodec 1.2beta2
on installed to linux(fedora 6) thanks!
After I downloaded the latest version of codec
then I type the commands to install :
configure -prefix=/home/...../test -enable-shared -enable-static
make
make install
then I try to compile my encode.c
here is the encode.c of mine:
=====================================
2010 Feb 05
1
Ongoing calls interface
I'm currently working on a PHP web interface to show (1) the registered endpoints and (2) their status: available, outgoing call or incoming call. (In the future, this interface should also be able to redirect calls etc.)
(1) The interface already shows a list of all registered endpoints. For this, I had to work around Asterisk's delay in monitoring when an endpoint is unregistered. What
2006 Apr 01
2
great idea for jitter buffer
The receiver could send the packet list that the he lost directly via p2p to the clients.
1. it isnt much data to send.
2. you safe the way throught servers.
Now the sender sends the data again to the server. Or if it isnt much to send he could
send it directly....
How about that?
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2003 Dec 26
1
Problems converting output from Sweave to PDf
I am having trouble converting the output from Sweave
into a valid PDF file.
I have created a simple .Rnw file which will become a
full vignette at some point, but during the
intermediate testing, I got errors from texi2dvi.
This is what I have done.
0) Using a Windows Xp system
1) Created a file called GeneSpring.Rnw
2) Convert this to Tex using Sweave("GeneSpring.Rnw")
from within R
2008 Dec 01
1
Question about UWB
Hi all,
One question that I hope someone on the list just knows the answer to
without having to delve too deeply into the code: How does UWB mode
divvy up the bandwidth and pack it in the bitstream? I know from the
documentation that WB mode codes the first 0-4K kHz band as a Narrowband
packet, and then adds on the 4-8 kHz band coded separately (so that a NB
decoder can decode a WB bitstream
2006 May 10
2
frame size
Hi,
Can someone please tell me how should I go about changing the frame size which is hardcoded to 160 for NB and WB and 320 for UWB.
For NB speech(8KHz) the framesize of 160 is 20ms frame but for WB and UWB its 10ms.
What are the parameters being affected by simply changing the framesize and sub-frame size in "modes.c"
How to change the buffer size and how its affected.
can we have a
2007 Jul 23
2
Shoehorning speex is confusing a newbie
This is going to take some explaining and I apologize in advance if any
of this is found in the manual or sample code but I couldn't find it. I
just graduated last may and this is my first experience with vocoders
and dissecting a professional's code.
I work for a company that is currently using a G729A vocoder from a 3rd
party software company and is looking into speex so they no
2009 Jun 30
3
Delays estimation in Speex algorithms
Speex tells me that the decoder is always 5 ms, but it says that the
encoder is 5 ms for NB, 8.9375 ms for WB, and 10.90625 ms for UWB. Is
there an extra frame of delay in the encoder that isn't otherwise
accounted for?
John Ridges
Jean-Marc Valin wrote:
> Quoting John Ridges <jridges at masque.com>:
>
>> I also need to know the precise delays from Speex but I used
2009 Jun 30
3
Delays estimation in Speex algorithms
JM,
I also need to know the precise delays from Speex but I used the
SPEEX_GET_LOOKAHEAD control requests to determine them (plus the
"speex_resampler_get_output_latency" function from the resampler). The
returned values from the Speex lookahead request don't seem to match
with the values you gave Alexander. Am I doing this wrong? Thanks,
John Ridges
speex-dev-request at
2005 Sep 08
1
ultra wide band packet questions
Hi Jean Marc and List,
So I have started finally fiddling around with Ultra-wideband mode.
It appears to be very similar in operation to Wide mode, except that
when peering into the packet structure it looks like (and these are
kind of questions as much as statements here):
1. update rate 0 is not used in UWB- only 1-4?
2. The total bits used for each UWB update rate seem to be as follows:
2008 Feb 13
2
Determine number of 20ms frames in packet - without decoding
> Ok, here is cleaned up and fixed version.
>
> * Function is named speex_get_num_frames() now and return
> number of frames, as you suggested.
> * WB layers sizes are taken from wb_skip_table[], while NB frame
> sizes are calculated with speex_mode_query().
Looking better. Just make sure to remove the stuff that isn't
C99-compatible (e.g. // comments).
> I've