Time domain convolution in a real-time situation Hi group,
I'm still working on my software BFSK-modem project.
More specifically, i want to use better filters, so I'm experimenting
with a windowed sinc filter (Blackman window).
I can succesfully calculate the impulse response H
My problem is that when I apply the filtering algorithm ( as found in
ch. 16 of The Scientist & Engineer's Guide to DSP ) , that the first M
output datapoints in Y are zero. ( M = length of H )
Quote example code:
for j := 100 to 4999 do
Y[j] := 0;
for i:= 0 to 100 do
Y[j] := Y[j] + X[j-i] * H[i];
real time hi all
I have an image processing & a neural network
code I want to process them
in real time
any one who can use the real time in mat lab?
Real time Hi everyone,
I have this issue:
Problem: Plot many graphs (about 5000) with about 900 points for each graph.
My solution: Use CNiGraph and following codes:
for (int i = 1; i <= 5000; i++)
Real-time controllers? If one is playing back a pre-recorded MIDI file, are there controllers with
which one can put in things like ritardando, accelerando, fermata,
luftpause, etc. in real time while the music is playing back? Preferably
with a foot controller, or a wireless controller one could hold in the hand?
Let me explain more my particular usage: With elementary school choruses I
teach, I usually do not have an accompanist. I make MIDI accompaniments,
that I play back from my laptop into a stereo or amp for many of the songs.
Sometimes, if I want the song to have ritardando, fermata, etc., I program
Ultra Mobile PC Thinking about this technology. Surf the net, email, watch TV and what
else. Any thoughts?
"Pete LaFlamme" <firstname.lastname@example.org> wrote:
>Thinking about this technology. Surf the net, email, watch TV and what
>else. Any thoughts?
Id like to have one but the PRICE.... Ouch!
What model you thinking abt?
Sony VGN-UX 180P ($1,800)
It is limited to 512K which I don't think is adequate so I will probably
wait 60-90 days to see what will be available at that time.
<email@example.com> wrote in message
Real-Time Workshop? Hi,
what is it used for?
and how can it be used efficiently with S-functoion and simulink?
<SNIP does not know how to find TMW's web site...
> Real-Time Workshop... what is it used for...
Connecting pc to real world I'm in the early stages of planning a HA system for a house we're going to
build in about 2 years. I'm a DIY kinda guy and am planning to use a
touchscreen pc to control security, heating/cooling, solar water heating,
landscape watering etc. We're not real big on audio/video, so probably won't
have any of that integrated into the system. Writing the code to control
everything is within my abilities. My question is how does the pc
communicate with the real world. The touch screen that I'll be using has a
USB port and a serial port. How exactly do I connect the v...
Adaptive Filtering in Real Time Hi,
I am a newbie trying to do real time adaptive filtering on an Analog
Devices blackfin 21535. I'm not trying to do anything too complex, just a
simple LMS algorithm (1 mic, 2 loudspeakers and a reference). Does anyone
know of any good online reference sites w/ some example code or just
information on this? Any help is appreciated.
"Zachary Rimkunas" <firstname.lastname@example.org> wrote in message
> I am a newbie trying to do real time adaptive filtering on an Analog
> Devices blackfin 21535. I...
Real time accompaniment application? Is there any app for Mac OS X that will allow chords to be fingered in real
time on a MIDI keyboard and then generate an accompaniment for it - like the
style sections on keyboards, organs and the like?
I've looked but I can't find anything.
remove stars for email
MACESS real-time access Has anybody tried obtaining data from MACESS in real-time? We need to
integrate our existing system (user-interface) with MACESS, and would
like to provide on-the-fly access to specific data that resides in
We have a few concerns:
1. There seems to be no API to do so directly
2. There may be performance implications -- for users who are actively
using MACESS throughout the day
Any comments/suggestions would be greatly appreciated.
Thank you in advance.
MACESS uses the Btrieve interface of Pervasive.SQL for most (or all) of
its database work.
Depending on the exact Btrieve...
gawk in real-time pipelines I am using the gawk 3.1.3 binary from sourceforge on
If I run a simple passthru filter with gawk then it echos
each line as expected (I entered the first abc line
and the first def line and the other 2 lines are output):
however, if I pipe two such filters together then I
don't get real-time behavior (i.e. I would have
expected the same output as above):
C:\>gawk 1 | gawk 1
Note that this is NOT a limitation of Windows XP since
if I write the passthru filt...
Real coordinates on the remote pc. Real coordinates on the remote pc.
Sorry about the things last time i had done. Now i really need some
Andrew or Roedy Green or any other person ( He or she is welcome).
Please i didn't force anyone to see or solve the problem but i really
need help this time! All the very good helping nature people in the
group.I try to solve it but i didn't get the things right.I am just
like your friend need some help?I like to know your
views its precious for me to solve the problem.
Problem:I had implemented one JScrollPane on which i had disp...
Real-time Data in excel Sorry this is my second post on the subject but the other seems to have been shuffled down before I got a chance to post the code. I am trying to view data in real time using excel. I am not using the report generation toolkit and am having trouble figuring this out. (I am relatively new to labview). Below is a link to my code if anyone has a chance to look at it and give a suggestion or two I would greatly appreciate it.
<a href="http://www.andrew.cmu.edu/user/cdboyd/labview.vi" target="_blank&q...
Plotting data in real time How can I plot data (say two vectors x and y) in real time? I want to
plot each point at an interval of say 1 sec. Any help
Thnks in advance
You have to create a line object with the the first data point.
Within a loop you have to update the 'Xdata' and 'Ydata' of the
object every time the program visit a certain point where you put the
Xnew[X x(i)]; %[x(i),y(i)] is the added point
This is assuming ...
Simulation filters for real-time systems? HI!
I'm actually trying to create a discrete filter with minimum phase loss
for a realtime system. But I'm very confused about all the possibilities
matlab/simulink offers to design filters...
Here's what I have:
Sample time (Position measurement and speed calculation): 10 kHz
Speed controller frequency: 10kHz
Position controller frequency: 2.5 kHz
The controllers are implemented in C for RTX/WinNT. My problem is that
the speed signal has a high quantisation, so I need to filter it, before
it is used by the speed controller. But therefore I need a sharp filter,
that does no...
how to edit the plotted data in real time i have 2 vectors which i want to plot. after plotting the vectors i want the user to change the waveform in real time my dragging it my mouse.
1. how to grant the access of the plotted waveform to the user?
2. after modification how can i extract the modified vectors?
On 13/09/10 6:12 AM, ankit wrote:
> i have 2 vectors which i want to plot. after plotting the vectors i want
> the user to change the waveform in real time my dragging it my mouse.
> 1. how to grant the access of the plotted waveform to the user?
That is very difficult...
How to automate recognize a plate no real time I want to make a program in matlab that recognize automaticly plate numbers in a video.
I mean I have a video with some cars passing, and i want that every time a car passes and the car plate number is shown to be recognize by my program.
What functions should I use ???
pls..... give me the name of this functions and some links with documentation for this proces if you know.
At first you should process the video frame by frame, then look for
plate-like segments in each frame. You need image processing toolbox
and assuming that your videos are avi movies, you'll need aviread
Creating an anonymous function in real time I would like to be able to enter and change the defined portion of an anonymous function as part of the input as with other parameters. For example the following integration problem:
jfactor = @(r,theta,phi) input('Enter an expression for the Current Density (J)... > ');
for theta = ithetar:dt:fthetar,
for phi = iphir:dp:fphir,
% add the partial sums to the total sum
sum=sum + jfactor*r^2*sin(theta)*dt*dp;
MATLAB will not accept my first line as a legitimate anonymous function.
exp=input('Enter an expression>','s')
jfactor = eva...
Real-Time Workshop vs. TargetLink Hello,
I have to generate C-Code from a Simulink-Model. The target OS is
OSEK/VDX. Which tool should I prefer Real-Time Workshop from MathWorks
or TargetLink from dSPACE? - Is somebody out there, who can give me some
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Solaris real-time thread capabilities ========
How can I get 10 millisecond timing reliably on a 2 CPU UltraSPARC-II
I have a Solaris application in which I need a thread to process
packages approximately every 10 milliseconds. The thread should be
woken up every 10 ms to send the queued packages and the thread should
then "sleep" until the next 10 ms interval. There is a jitter buffer at
the other end, so I don't need _EXACTLY_ 10 ms... even if I get woken
up within 20 ms it is OK... but being off by 100 ms would be bad.