**Technical discussion about Matlab and issues related to Digital Signal Processing.**

### Search Results for "wavelet"

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**syavash jafari** - May 31 2006

*Hello,
I want to build a new wavelet with data that is in array form (for example : ).
Discussion : Maybe, we use wavemngr matlab command to build any new wavelet family... *
**Jeff Brower** - Apr 1 2004

*
Swetha-
I have posted your question to the MATLAB group.
-Jeff
-------- Original Message --------
Subject: I have a problem in wavelet transforms
Dat... *
**Alex Z** - Jul 3 2006

*Hello, need the help of experienced wavelet processing gurus here...
I have certain project that is aimed to accomplish a noise filtration
by means of wavelet decomposition, subb... *
**Ahmad El-Saeed** - Mar 6 2010

*Hello All,
I need to ask if anybody had managed to successfully generate C code from MATLAB code which uses Wavelet toolbox functions like wptree. Does anybody have trials in th... *
**nirupama_venkat** - Mar 11 2003

*
hi,
i would like to use the wavelet toolbox, i have a 128*128 image
matrix ( integer values)in the wavedemo folder,but when i am trying
to use the command "load i... *
**shivraman giri** - Jul 3 2003

*
hi,
does anyone know how to find out the sinusoidal components in a nonstationary
signal at a given instant using wavelet.
i can plot the scalogram using the matl... *
**ny abc** - Nov 14 2003

*
Hi,
Anyone use wavelet packet transform to diagnose
machinery fault?
Hope to communicate with you and share our ideas.
Thanks
... *
**Josh Morgan** - Jul 24 2008

*Hi,
I have a few problems, looking for there solutions:
How to set filter type, length, order and sampling rate using DWT command? I mean how all parametrs that we set in fdatool... *
**vasudev_mahale** - Jun 28 2006

*Hello all,
A new bee to wavelets, I need to segment a topographic profile
(langscape profile sampled at an interval 6 meters extending to 20 kM
long) based on the roughness of... *
**mahdieh ghazvini** - Jun 10 2003

*
I am an undergraduate who has been working on my thesis about detecting
pitch in speech signal using wavelet.
I'd like to know what is the best method to do it.
... *
**Hany Ferdinando** - Oct 12 2000

*
dear all,
I need simulink block for wavelet. Who has this kind of block?
Thank you
Hany Ferdinando
Petra Christian University
Department of Electr... *
**camdmag** - May 25 2005

*
Hi
I was wondering if the dyadic wavelet transform was available in
Matlab or if someone could suggest where I may find relevant Matlab
code.
Thanks in advance. ... *
**puya afshar** - Oct 22 2003

*
Dear Matlab Users
Has any body a sample code dealing with a Wavelet neural network training for
identification of a dynamic nonlinear system ?
Looking forward to ... *
**vasudev_mahale** - Jul 6 2006

*Hello all,
A new bee to wavelets, I need to segment a timeseries profile or to be
more specific a topographic profile (langscape profile sampled at an
interval 6 meters extend... *
**TS** - Sep 3 2009

*Hi,
I'm beginner to MATLAB. I've problem of understanding with the following code (line comment):
X = imread('lena.jpg');
N = 2;
[C, S] = wavedec2(X, N, 'db1'); %... *
**oren...@hotmail.com** - Oct 31 2013

*I am trying to recreate the following results:
http://i.stack.imgur.com/muMxX.jpg
from the following data:
https://www.dropbox.com/s/mi3szqgzgku29rn/FS40.dat
the time i... *
**Arnaldo Batista** - Mar 26 2002

*
Hi there
Just tried the following:
I performed the scalogram (with a Morlet wavelet) of a signal. Then I did the
same, but with the hilbert transform of the sa... *
**Alex Z** - Aug 26 2006

*Hello.
Is there anyone who has an experience of discrete wavelet transform
implementation to achieve signal subband separation ?
I'm working on certain signal processing that is... *
**yaheeido** - Oct 28 2008

*according to this link
http://www.mathworks.com/company/newsletters/news_notes/sum99/wavelets_in_rt_apps.html
The author say that ".... to cope with processing signals of dif... *
**junejonoman** - Feb 4 2004

*
Dear all
I am using the matlab-wavelet toolbox ver 1.2 and the follwoing
function
wdencmp is giving error for the innvalid argument list. although
the exa... *
**rang...@yahoo.com** - Jul 13 2007

*Hi all,
I am trying to do peak detection on a signal that is under sampled (to save power). I am trying to find some DSP routine to do this more accurately than just going o... *
**amalaziz06226** - May 13 2004

*
Hi all,
I am a new member, I am trying to use simulink to perform denoising
on a vector signal. I tried to use the wavelet function WDEN (it is
included in the wa... *
**Anil B.V.** - May 10 2001

*
Hi
I am working on EZW coding.
The first part that is subband decomposion is done in
MATLAB. Now I have an array of wavelet coefficients
with size 256 -by- 256.... *
**iraq...@yahoo.com** - Mar 13 2006

*
refer to www.wavelet.org you will see all there have good experience..regard
... *
**Tayyar Guzel** - Jan 9 2009

*One thing you can do is to utilize the Wavelet transform (when you need to know which frequency components occur when, there you need a Wavelet transfrom) to look at the time-frequ... *
**nirup reddy** - Dec 14 2005

*
Hi friends,
I am able to do the first level lifting wavelet transform using haar wavelet as shown below
rgb_img = imread('c:/lena512.jpg');
I = .2989*rgb_img(:,:,1)+.58... *
**Tayyar Guzel** - May 8 2006

*Hi Frank,
There are many denoising methods.. The dummiest method of denoising is to use the spectral subtraction where you estimate the noise spectrum and subtract that fro... *
**calmncool82** - Mar 16 2008

*Hi everyone,
i did short time fourier transform(STFT) on 1-D speech signals, and
did spectrogram analysis. On one paper I found that it is possible to
come up with a wavelet b... *
**p_r_a_d53** - Mar 15 2009

*I m working on the project "wavelet based watermarking". am using the dwt2 function to get the approximation parameter. while doing so.. Iam losing the color of the watermarked ima... *
**acep...@gmail.com** - Jun 3 2005

*
Hello Everybody, I'm trying to replicate in Matlab code the Redundant Haar
Wavelet, as from the
http://strule.cs.qub.ac.uk/~gzheng/financial-engineering/finpapermay99.... *
**MAST...@UWALUMNI.COM** - Dec 13 2006

*Hello,
I have a question regarding the wavelet decomposition and reconstruction using the functions wavedec and waverec.
I get an error during the reconstruction process when I s... *
**Chitta nayak** - Jan 30 2007

*hi,
can anyone plz explain how to decompose a image using HARR wavelets...
waiting for ur reply...
k byee
--
chittaranjan
... *
**a_ch...@hotmail.com** - Mar 27 2007

*Hi there,
Hope someone can help me with this problem. I've got a 2D image (256x256) and i want to decompose on each row of the image using wpdec. After i want to extract feature... *
**Chandrakant Deoda** - Apr 19 2006

*Dear all,
If you have any demo program for QFT, Please forward to me.
If you have any data, simulation , any information related to same please share with me.
QFT : Quanti... *
**"jrs...@ymail.com"** - Oct 26 2009

*hello ,
While searching for some dsp projects to study I found a topic "forward" in http://www.dsp.rice.edu/software.i found out some codes from that project but stil... *
**Yogesh Ganapathy** - Jan 6 2006

*
Hello friends,
I am doing a project in lossless image
compression. Do any of you have the coding in matlab
for SPIHT algorithm or for integer wavelet transform.
If you ... *
**amelie.quinet** - Mar 3 2006

*
Hi
I m working on image compression (jpeg2000), and I ve got some
problems to begin with wavelets transformation.
I want to use 5/3 wavelets (Le Gall).
Can somebody help me... *
**joh sor** - Dec 22 2003

*
I want to analyse a part of a EEG record into it’s frequency components, using
wavelet packets. Could you tell me if there are any methods to construct
trees, in or... *
**Desamsetti Srinivas** - Mar 25 2009

*Dear Matlab Users,I need a help from the forum.As I have a time series of data and I wish toplot a wavelet analysis as a figure (shaded)using a matlab script.If any one of you are ... *
- Nov 17 2001

*
Dear All,
Does any body know how to calculate coding gain for 6-level
decomposition of integer wavelet transform (G6). Matlab m-file will
be highly appreciated... *