Displaying 20 results from an estimated 2000 matches similar to: "Enabling Speex VBR for VoIP"
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
2008 Jun 28
0
Enabling Speex VBR for VoIP
Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> wrote:
>
> See the SPEEX_SET_VBR and SPEEX_SET_VBR_QUALITY options. But be aware
> that unless you're aggregating many VoIP calls on the same link, there's
> little use for VBR in VoIP.
I don't agree with this. I've used Speex's VBR mode exclusively in my
P2P VoIP software for the past 4 years and never
2007 Apr 02
1
Problems with stereo data
Hi all,
I have a problem when I am encoding (or decoding) stereo audio.
With mono data, things are fine and everything works without any problems.
When I try to decode stereo data, all I get is a static sound - similar to that of a radio not tuned to any specific station. I wonder what might be wrong?
Below is the code, first, of the encoder and next that of the decoder. Any information or
2006 Jan 25
16
Slideshow beta
Ok,
I finally got the slideshow code to a state worth showing it
off. The site is a very rough cut of a site I''m building for my wife''s
photography, so ignore the unfinished design for now :)
http://rachel.kathihill.com/
To see the ajax version, go to:
http://rachel.kathihill.com/?ajax=1
To randomize the order the images show:
http://rachel.kathihill.com/?random=1
To change
2009 Nov 13
2
help sample from large dataset - misleading error?
Hi All,
I want to take a simple random sample from a large dataset, gly, but I'm
getting an error message. Any help?
dim(gly)
[1] 112371 37
> s1 <- sample(gly,100)
Error in `[.data.frame`(x, .Internal(sample(length(x), size, replace, :
cannot take a sample larger than the population when 'replace = FALSE'
Thanks,
Rachel
[[alternative HTML version
2010 Apr 12
1
What establishes "average" bitrate in Variable Bitrate (VBR) Mode?
On 2010-04-11 10:09, Randy Yates wrote:
> If I specify VBR mode via
>
> speex_encoder_ctl(pSpeexEncoder, SPEEX_SET_VBR,&isTrue);
Try:
speex_encoder_ctl(pSpeexEncoder, SPEEX_SET_ABR, &desiredRate);
2004 Dec 28
5
Sound distorted after normalized.
> 16 bit ints have a range of -32768 to 32767. If you divide
> -32768 by 32767.0 you end up with -1.00003051850948 which
> is a bad thing.
>
> Try normalizing with a value of 32768.0.
No. Speex expects values in the +-32767 range, not +-1.0. Just
converting from int16 to float *is* the right thing to do.
Jean-Marc
--
Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
2006 Jun 04
2
Can anyone help?
Quick question please....A user logs into windowsXP and tries to create a folder/document and the ownership on the new file/folder defaults to nobody:nobody. I have the user set up in samba on the IRIX machine. All other users have no problem. Anyone have any suggestions?
Thanks
Rachel
2009 Jul 09
3
Stratified data summaries
Hi All,
I'm trying to automate a data summary using summary or describe from the
HMisc package. I want to stratify my data set by patient_type. I was
hoping to do something like:
Describe(myDataFrame ~ patient_type)
I can create data subsets and run the describe function one at a time,
but there's got to be a better way. Any suggestions?
Rachel
[[alternative HTML
2001 Aug 09
2
Pulling columns out of a data.frame
Hi there
Probably a very simple solution to this problem.
I have a character vector eg c("name1","name2","name3") and I want to pull
out these columns from a data.frame, converting each of these columns into
factors also.
Many thanks
Rachel
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read
2009 Apr 28
3
creating a vector of sums
Hi,
I am trying to create a function for a goodness-of-fit test for the Pareto Distribution for some loss data that I have.
So far I have the following:
function(X=OTOL)
{
n <- length(X)-1 #calculated the number of values (extra as 0 included)
i <- 2:640 #values of i
j <- 1:639 #values of i-1
Y <- (n-j+1)*((X[i])-(X[j])) #First part of GoF model
Y
}
Where OTOL is the ordered loss
2010 Jun 22
1
subset dataset using factor levels instead of factor names
Hi All,
I have a factor variable with 52 levels -with long, annoying names. I want to keep only rows with some variables. I can do this using this code:
test1 <- subset(nih2009,ic_name %in% c('NATIONAL EYE INSTITUTE','Veterans Affairs'))
dim(test1)
[1] 2396 38
But this doesn't work:
t1 <- subset(nih2009, ic_name %in% c(27,51))
dim(t1)
[1] 0 38
I know
2005 Sep 19
2
Problem with tick marks in lines.survfit (package survival)
I have attempted to follow posting guidelines but I have failed to find out
what I am doing wrong here.
I am trying to use lines.survfit to plot a second curve onto a survival
curve produced by plot.survfit. In my case this is to be a progression free
survival curve superimposed upon an overall survival curve, but I will
illustrate my problem using the example given in the help for
2005 Oct 12
1
Windows XP client changes not being saved via Samba
[global]
workgroup = IIG
netbios name = TUX
server string = Samba Server
interfaces = 192.168.0.10/24
update encrypted = Yes
logon path = \\TUX\profile\%u
logon drive = H:
domain logons = Yes
os level = 65
preferred master = Yes
domain master = Yes
wins server = 127.0.0.1
wins support = Yes
2010 Aug 18
6
Once I added this HABTM, one of my 'through' relationships, on a non-habtm model, seems to have broke?
I''m a rails newb and have been Googling about this, but I''m still stumped.
Not showing everything here, but basically it should be a pretty common
setup so I''m sure others know what I''m doing wrong.
- A meter can belong to many meter_groups
- A meter_group can have many meters.
- A user can ''subscribe'' to viewing a meter_group (Subscription)
2008 Aug 01
5
viewing data in something similar to 'R Data Editor'
Hi,
I would like to view matrices I am working with in a clean, easy to read,
separate window.
A friend showed me how to do something like I want with edit(). I can view
the matrix in the 'R Data Editor':
For a sample matrix:
> mat=matrix(1:15,ncol=3)
> mat
[,1] [,2] [,3]
[1,] 1 6 11
[2,] 2 7 12
[3,] 3 8 13
[4,] 4 9 14
[5,] 5 10 15
2009 Feb 06
2
undesired grid in ps/eps outputs generated by filled.contour or image
Hi!
Whenever I save a graphic in ps/eps format generated by filled.contour or
image, an undesired grid is added to it (not visible on the X11 screen). For
example:
postscript("volcano.eps")
filled.contour(volcano,col=gray(seq(0,1,,50)),levels=seq(min(volcano),max(volcano),,50))
dev.off()
Any ideia how to eliminate this grid?
Thanks,
Rachel
[[alternative HTML version deleted]]
2006 May 19
2
Tick marks in lines.survfit
I posted several months about the problem with adding tick marks to curves
using lines.survfit.
This occurs when lines.survfit is used to add a curve to survival curves
plotted with plot.survfit. The help for this function implies that
mark.time=TRUE thus:
plot(pfsfit,conf.int=FALSE,xscale=365.25,yscale=100,xlab="Years",ylab="%
surviving",lty=2,mark=3)
2006 Mar 02
6
Newb question about facade columns
Hello,
I am trying to deal with a database table that contains a date in the
form of the number of seconds since epoch. Data is inserted in this
format by an existing script that I can''t change, so a schema change
isn''t realistic.
I would like to allow humans to view and edit this data in the form of
an actual human-readable date. I figured a facade column would be the
2010 May 02
3
Text dependent on a variable in a R function
Hello,
I was wondering if someone could tell me how I can make text dependent on a variable in a R function I have created.
The function will create plots, thus I would like each plot to have a unique title based on the inputted variable as well as a unique file name when saved using the savePlot function.
Thanks!
Rachel