Displaying 20 results from an estimated 7000 matches similar to: "average waveform over many cycles"
2005 Sep 19
3
waveform filtering
I'm not an engineer so I hope I'm using the correct terminology here. I
have a recorded waveform that I want to apply low and high pass filters
too, are tehre already R functions existing to do this or am I going to
have to program my own?
thanks for any pointers
tom
2009 Oct 21
2
three related time series with different resolutions
I have three time series, x, y, and z, and I want to analyse the
relations between them. However, they have vastly different
resolutions. I am writing to ask for advice on how to handle this
situation in R.
x is a stimulus, and y and z are responses.
x is a rectangular pulse 4 sec long. Its onset and offset are known
with sub-millisecond precision. The onset varies irregularly -- it
doesn't
2013 Jul 09
0
Fwd: AQuA Meter – waveform analysis to get continous MOS scores for your network
Hi,
Although this is a repost from Asterisk biz, we would like to ask if
somebody may help us to develop a native Asterisk module using AQuA
technology for voice quality monitoring using the same web service AQuA
Meter is using.
Thanks,
Sevana Finland/Estonia
---------- Forwarded message ----------
From: Sevana Oy <sales at sevana.fi>
Date: Mon, Jun 17, 2013 at 7:30 PM
Subject: AQuA Meter
2006 Jul 30
1
Log color scale
Hi all,
In response to a previous post about plotting a numeric square matrix
as a colored matrix, I was referred to both image and the
color2D.matplot function in the plotrix package. Both have worked for
me thanks!!
However I need to plot my data in a log transformed color scale. Is
this possible? I will be happy to explain further, but basically I
need to do this because there are large
2011 Feb 17
0
deriving waveform values
Im am curerntly trying to use R software to extract uncompressed waveform
values with I have acquired from IDLreadGLAS tool.
I am very lost with this & know I have to assess the GLA01 product data,
however, any advice on the matter atall would be brilliant, particularly on
define thresholds and connecting GLA01 and GLA14 data (or any data for that
matter)
--
View this message in context:
2015 Aug 25
2
PLC Sounds Robotic - How to Implement FEC Wideband
I am specifically using Celt Wideband (48kHz) over WiFi multicast that naturally leads to lost packets and am trying to minimize the impact to the audio. I implemented PLC but the audio it produces is robotic. Have I implemented PLC correctly?
Checking the waveform it is using the previous received waveform to fill in a missing packet but not the full waveform so it has to repeat. Basically,
2008 Aug 06
1
error in installing R packages
Hello,
I am trying to install R packages under linux, some of the packages can
not be installed and I got the following error, could anybody give me
suggestion on where the problem is and how to fix it? Thanks-e
> .libPaths()
[1] "/usr/lib64/R/library"
[2] "/usr/share/R/library"
[3]
2009 Nov 28
2
fft and filtering puzzle
I am puzzled by a filtering problem using fft(). I don't blame R.
I have a waveform y consisting of the sum of 2 sinewaves having freqs f1 and f2.
I do s = fft() of y.
Remove s's spike at freq=f2
Do inverse fft on s.
The resulting waveform still has a lot of f2 in it! But the filtering
should have removed it all.
What is going on, and how to fix??
Thanks very much for any help.
Bill
2003 Aug 24
2
wxRuby 0.1.0 Alpha has been released!
http://rubyforge.org/project/showfiles.php?group_id=35&release_id=46
The code itself has been quite stable for several weeks. This release
includes Gour''s excellent MinGW README notes, along with various updates
to the README, and clarification of the LICENSE.
Thanks to everyone for your help in putting this together. It was
definitely a team project. I look forward to getting lots
2005 Jul 11
2
Vorbis for non audio stream
Hi all!
I would like to use Ogg-Vorbis to encode a non audio waveform. My
waveform is in .wav format, on 16 bit mono, with frequency range from
100Hz to 100MHz. It's about 100MB lenght.
I need to compact it with lossy for net transfer.
Is there something like this, already done, that can help me ??
How can I measure the distortion that Vorbis introduce?
I'm sorry for my bad english.
2007 Jul 12
2
Quality degradation on new versions
Hi,
I have been using speex version 1.0.5 on a text-to-speech program. Recently
I upgraded to version 1.2beta1
and noticed that the waveform the I got after encoding and decoding on the
new versions (beta1,beta2) is much
more different than the original than on version 1.0.5. I also ran a PESQ
comparison test on 700 voice samples
and got better results in the older version (I used quality 9, and
2003 Dec 20
1
sound library
I'm collaborating with and electronic musician to experiment on the production of music from number sequences. As I'm an R user I started playing around with the sound library and I found it very useful. However there are several things I do not understand (I'm not an expert in acustic nor audio signal treatment).
The first thing I'd like to understand is: let s be a normalized
2007 Mar 12
2
Playback 5% Too Fast?
Hi All
I have a problem with IVR scripts which consist mainly of Playback of
audio files, driven from an AGI application. There are clicks every few
seconds or more frequently that is audible on the remote end (PSTN), but
not on the Asterisk recording of the call. If I record the remote end
and compare it to the local recording, it appears to be about 5%-7% too
fast - i.e. if I synchronise the
2005 Apr 30
2
Warning from Rcmd check - data could not find data set
This is rw2010 from CRAN.
When running Rcmd check
on a package I get:
Warning in utils::data(list = al, envir = data_env) :
data set 'vowel.test' not found
Warning in utils::data(list = al, envir = data_env) :
data set 'vowel.train' not found
Warning in utils::data(list = al, envir = data_env) :
data set 'waveform.test' not found
Warning in utils::data(list
2005 Apr 30
2
Warning from Rcmd check - data could not find data set
This is rw2010 from CRAN.
When running Rcmd check
on a package I get:
Warning in utils::data(list = al, envir = data_env) :
data set 'vowel.test' not found
Warning in utils::data(list = al, envir = data_env) :
data set 'vowel.train' not found
Warning in utils::data(list = al, envir = data_env) :
data set 'waveform.test' not found
Warning in utils::data(list
2011 Feb 18
2
R script HELP!
The following is my R script which I am struggling with to assess ICESat
data..perhaps it is the ID_min or ID_max that is wrong? I don't know, any
help would be greatly appreciated :(
# OPTIONS - CHANGE THESE VARIABLES IF NEEDED\par
######################################################################\par
\par
icesatfile <-
2007 Jul 17
1
Quality degradation on new versions
Hi Jim,
First of all - thanks, turning the highpass filter off was what I needed,
and the waveforms
match now.
But, when i did the PESQ tests again I found an interesting result :
version 1.0.5 still got
a slightly better average score, but the standard deviation on version 1.2
beta1 was much smaller.
The cause for that is this - on some samples versions 1.0.5 and 1.2beta2
produced a single
2006 Mar 27
2
Speex for sampling freq >48KHz
Hi,
I have one doubt again, that is Vorbis use DCT/MDCT based algorithm and also use psychoacoustic model so this is lossy codec. And I dont think it ca regenerate a better matching waveform than speex.
Then there comes FLAC which is the perfect answer to my question, I suppose. But my concern is this that FLAC use simple prediction algorithm and doesnt use any CELP based algo which could have
2009 Aug 09
2
floating point
On Aug 7, 2009, at 21:48, Didier Dambrin wrote:
> FLAC doesn't preserve every chunk? I thought it did. I only gave a
> quick try
> but it seemed to have preserved even the most obscure chunks.
> Let me check: it even seems to preserve "MIDI note associated to
> marker",
> which is a very unknown metadata used by SoundForge (& even defined
> in a
>
2008 May 19
2
Draw Polygon with a Circular Side
Hello Friends!!!
I would want draw a circular histogram, and I would like draw a polygon with
a circular side. This is easy if I use the functions polygon and arc, but I
want that the polygon with a circular side have background colour. The
polygon created with function polygon can have background colour, but the
surface created with function arc can?t have background colour.
How I could create a