Displaying 20 results from an estimated 200 matches similar to: "nice idea"
2004 Sep 10
0
nice idea
some times ago i was playing with coding, shannon theoremes and other stuff, i
have tried without success to compress audio wave, and i have notice that
simply oversampling audio material enacnhe a lot compression ratio
i only take awav file, oversampled it by 20 tiimes and then compressi it
using pkzip or rar.
i don0't remember if i also do a CONSTANT PREDICTION,
iony know that pkzip
2004 Sep 10
2
Re: nice idea
constant prediction
see this page
http://flac.sourceforge.net/format.html
oversampling.. i maean digitally change the wave file rate form 44khz to 440
khz
it make next sample easyer predictable
if i'll found my old work i'll tell you how much compression i could achieve
2004 Sep 10
2
Re: nice idea
--- Hod McWuff <hod@wuff.dhs.org> wrote:
> On Fri, 2002-10-04 at 10:26, Marco "elcabesa" Belli wrote:
> > oversampling.. i maean digitally change the wave file rate form
> 44khz to 440
> > khz
> >
> > it make next sample easyer predictable
>
> OK, IANASPE (signal processing engineer) but it seems to me that if a
> simple shift like that can
2018 Jul 04
1
unexpected behavior of unzip with list=T and unzip=/usr/bin/unzip
Hello,
I encountered some unexpected behavior of unzip when using info-zip's unzip
instead of R's internal program. Specifically, unzip("file.zip", list=TRUE,
unzip=/usr/bin/unzip) produces incorrect output if the zip archive has
filenames with spaces, and results in an error if the zip archive includes
an archive comment or file comments.
Here is some code to reproduce along
2010 Dec 02
1
rpart results - problem after oversampling
Hi all,
I am trying to predict a target variable that takes values 0 or 1 using the rpart command. In my initial dataset I have few positive observations of the target variable; therefore I have oversampled the rare event by a multiple of 6 (i.e. from 762 to 4572).
However, in my results, I end up with a number of positives in one of the terminal nodes that is not divisible by 6. As I have the
2006 Jul 31
1
Fw: Files left open
I'm still stuggling with files left open. My app is a Dialogic application
on a Win2K box. The host is running AIX 5.1 ML2 and samba 3.0.23a. Whenever
my PC app speaks a prompt stored on the AIX box, the file stays open.
smbstatus, fuser and lsof all agree the file is open.
All other apps that I've tried, Winzip, pkzip, vi, etc., behave properly.
I just can't believe this is a
2003 Aug 22
10
Intresting.. hrm
And it runs linux.
http://www.zip4x4.com/ZIP4x4.htm
Anyone seen one?
bkw
2001 Oct 07
1
Installing Packages
Hello All,
I have all the packages as .zip files in a folder, say zipfolder.
Does "pkunzip -d c:\zipfolder\*.zip", while I am in the library folder of R home, install the packages just like installing each package individually from the RGui Packages menu?
Thanks
syed at saudionline.com.sa
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2009 May 05
1
Rcompression and Java Deflator
(this may be a duplicate post since I attached a file to the previous try...sorry about that)
Below are the first few lines of a zlib compressed byte array written from Java with the Deflator class.
> readBin("row_1",raw(),10000000)
[1] 4c 45 50 e2 49 d5 86 bc 48 a1 32 5d 49 9d f5 90 48 e0 14 33 49 8f 54 6a 49 77 c9 48 48 d9 ec 56 47 91 48 f0 47 25 56 ef 47 b8 f5 7b 46 35 25 00
2011 Mar 02
2
Creating a weighted sample - Help
Hi
I'm new to R and most things I want to do I can do but I'm stuck on how to
weight a sample. I have had a look through the post but I can't find
anything that addresses my specific problem. I am wanting to scale up a
sample which has been taken based on a single variable (perf) which has 4
attributes H,I, J and K. The make up of the sample is shown below:-
Perf Factored
2004 Sep 10
0
Re: nice idea
Agreed that the oversampling isn't useful in the long term. I'm not sure
what you mean by 'dictioniary overhead'.
I'd like to see an easy-to-invoke set of parameters that will spare no
cpu expense and produce the tightest theoretically possible output.
I'm guessing the best of Marco's idea can be achieved by adding
heuristics to dynamically determine optimal frame
2013 Mar 14
3
Higher compression modes from Flake
On 14-03-13 20:02, Declan Kelly wrote:
> The next official release of the FLAC command line should really have
> a "-9" option for absolute maxed-out big-memory CPU-burning compression.
No. If you want such things, try TAK, OptimFROG, Monkey's Audio or even
LA, you'll lose hardware compatibility anyway and they do much better
than FLAC will with a -9 option. FLAC 1.0
2011 Jan 08
5
Idea to possibly improve flac?
Lots of comments throughout this one...
On Jan 7, 2011, at 15:28, Declan Kelly wrote:
> On Fri, Jan 07, 2011 at 02:22:51PM -0800, brianw at sounds.wa.com wrote:
>> However, you should be aware that many modern producers use software
>> to create their music, and when the software stores sound clips in
>> MP3 format, what you end up with is music that sometimes looks like
2006 Jul 17
6
Output and Word
Hi
I have just started to have a look at R. I have used most stats software
packages and can use perl, visual basic etc. I am interested in how well
it handles lots of output e.g. tables or charts. How would you get lots
of output most easily and quickly into a Word document?
Sharon Snowdon
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FIGHT BACK AGAINST SPAM!
2009 Oct 26
1
[PATCH] Fix miscompile of SSE resampler
From: Thorvald Natvig <slicer at users.sourceforge.net>
Some optimizing compilers miscompile the current SSE optimizations when
full optimizations are enabled. By using output value pointer instead of
a return value, we can bypass this misbehaviour.
---
libspeex/resample.c | 8 ++++----
libspeex/resample_sse.h | 24 ++++++++----------------
2 files changed, 12 insertions(+), 20
2004 Apr 24
0
[PATCH] Support WinImage compressed floppies
The following patch allows memdisk to support compressed floppy images
created by WinImage.
WinImage creates a PKZIP-style archive with a single member, the .img
(or .ima) file containing the floppy image. WinImage names such
archives with a .imz extension.
This patch lifts the header/trailer checking code from gunzip() to a
new function, check_zip(), which both checks for a valid ZIP image and
2012 Jun 12
9
[Bug 51018] New: kernel >=3.4.0: nouveau triggers kernel BUG in slub.c on GTX 560 Ti
https://bugs.freedesktop.org/show_bug.cgi?id=51018
Bug #: 51018
Summary: kernel >=3.4.0: nouveau triggers kernel BUG in slub.c
on GTX 560 Ti
Classification: Unclassified
Product: xorg
Version: unspecified
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
2012 Sep 25
2
Regsubsets model selection
Hi,
I have 12 independent variables and one dependent variable. Now I want to
select the best adj. R squared model by using the regsubsets command, so I
code:
> plot(regsubsets(Gesamt ~ CommunistSocialist + CountrySize + GNI + Lifeexp
+ Schoolyears + ExpMilitary + Mortality +
+ PopPoverty + PopTotal + ExpEdu + ExpHealth, data=olympiadaten, nbest=1,
nvmax=12), scale='adjr2')
Then I
2017 Jan 05
4
Regresión Logística desbalanceada
Hola Comunidad, Feliz Año 2017:
Tengo un problemilla con una regresión logística desbalanceada, tengo
demasiados TRUE (93%). ¿Sabría alguién alguna forma de corregir el
problema con R?
Un slaudo,
Milagros Camacho
---
El software de antivirus Avast ha analizado este correo electrónico en busca de virus.
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2008 Oct 20
1
Categorical Response Query
Hi all,
I have a queston about Categorical response.
i have a data frame containing age, sex, class, success(1=success,
0=non sucess).
age, sex,class are the explantory variables, and sucess is the
response variable. and i can get n (the nunber of times each age
occurs) and r (the number of sucess of that age).
when I try to creat the regression relationship for these variables, I
have seen