Does LabVIEW have CCITT filter?

Hi
I'm writing a program need CCITT filter. I have sound and vibration toolkit but it doesn't have CCITT filter. Are there anyone tried to use or implement it in LabVIEW?
Bill.

Bill,
You may be interested in this discussion; If I'm not mistaken a psophometric filter is the same as the CCITT filter.
It comes down to having the correct shape of the filter and apply it to the FFT data.
Hope this helps.
Regards,
Juan Carlos
N.I.

Similar Messages

  • Does LabVIEW have any kind of source control?

    I want to use a source control tool such as git and svn.
    Does LabVIEW have such a tool?

    Hi icat,
                Yes.See these: (Sorry as GerdW pointed out not embedded in.)
                https://decibel.ni.com/content/docs/DOC-1681
                http://zone.ni.com/reference/en-XX/help/371361D-01/lvhowto/configuring_scc/
    Thanks as kudos only

  • Does Labview have Try Catch exception handling?

    1) Does Labview have Try Catch functions, exception handling?
    2) Can Labview access a file or download a file using http or https?
    3) How can labview  read data from an ex ternal server http or https?
    This is in labview 2009 or 2011

    Hi E,
             1. you can chain together your VIs with the error wires, such that if an error occurs in one of them, none of the following VIs will execute.  That's  like throwing an exception - it interrupts the execution chain.  You then "catch" that exception by putting an error handler wherever necessary, but not necessarily in every single VI.Hope  You wouldn't put try..catch inside every single .NET function, instead you handle the exception at the level at which is most appropriate. Same thing can be done in LabVIEW.
    Also see this.
    2. The attached example downloads a picture with http "GET" command.
        Dilbert.Main_LV71.vi 160 KB
    3.see this thread:
       http://forums.ni.com/t5/LabVIEW/Read-a-text-file-from-Labview-web-server-http/td-p/267434
    Yes!!The same thing pointed out by nijims.
    Thanks as kudos only

  • Does LabVIEW have support for entering Urdu language script?

    Hi All!
    My LabVIEW application requires users to enter their observations in a string control which is then stored in an excel file.
    Now the issue is that the user wants to enter the data in Urdu language.
    Now my question is, Does LabVIEW have support for entering Urdu language script in a string control?
    If yes how can I implement this? If no, is there any possibility that National Instruments could extend some help in this regard upon request?
    Regards,
    Reeves

    My experience from Hebrew, which is also right to left, is that it can be done if the operating system supports it, but it will work badly if you include anything in the text which is not an Urdu letter. This causes it to be displayed in the wrong side of the control and is only solved if you add more Urdu text after it.
    One option you can try is including an ActiveX control (such as the rich text box) for editing the text and then you can probably get the text from it using a property. I don't remember trying it (my users don't usually need to input Hebrew text themselves), but I think it should work. I wouldn't have any hopes for NI doing anything about this, because it's considered to be a relatively small market.
    Try to take over the world!

  • Does labview have a 2D FP high/low pass filter?

    After digging through labview for quite a while, and then trying Google I'm starting to think there really is no floating point filter functions in labview for 2D arrays?  I tried the IMAQ kit, but even after all the frustration involved in actually getting an array into an "image" it doesn't seem to support floating point (at least as far as I can tell).  
    Am I missing something or does this really not exist in labview?

    Hi, Am not sure whether i understood your question. what does this floating point filter functions means? Have a look that attachment. Different kinds of filters are there in LabVIEW and it accepts floating point input. If you want to pass 2D input pass it thru for loop.
    Hope this helps you.
    Attachments:
    f1.JPG ‏137 KB
    f2.JPG ‏150 KB

  • Does Labview have a Random Number Generator for U16 with a periodicity greater than 64 Million instances of U16words and one with SEED as the connector?

    We are doing some testing that requires 64MegaWords be written to our DSP memory  with random values to do a validity check and without repeating sequences with using the previous value as the seed for the next and us passing it the initial seed.  The dice one doesn't meet that criteria, and I was not sure how the continuous random number generator parameters work and if any of them would meet this criteria. Anyone have any information that might help?
    Thanks,
    Sue

    Hi suem,
    There is no reason why you couldn't simply write a pseudo-random number generator by yourself. Simply select a random number algorithm you want to use and implement it in LabVIEW. You do not need to interface code written in another language in order to implement a pseudorandom number generator. If you have a DAQ card or something, you can also use inputr noise or some other hardware soruce to generate real random numbers. For that also LabVIEW is an excellent tool.
    Tomi
    Tomi Maila

  • Does Labview have function Mod() ?

    Hello, everyone,
    I am trying to parse an array only for all its odd/even number elements.  
    I am thinking of use Mod function upon 'iteration' but labview seems have 
    nothing there.   
    Does anyone know something about that?  
    Thanks in advance,
    -Kunsheng
    Solved!
    Go to Solution.

    Stu Turner wrote:
    I found my way to this page because I was looking for a modulus function in the mathematical sense, i.e. In mathematics, the absolute value (or modulus) | a | of a real number is the numerical value of a without regard to its sign.
    Interesting.  I never heard absolute value be called modulus before.  I just hit wikipedia to check.  In every sense I've heard of modulus (including a few math and cryptography classes), it is remainder (http://en.wikipedia.org/wiki/Modular_arithmetic).
    There are only two ways to tell somebody thanks: Kudos and Marked Solutions
    Unofficial Forum Rules and Guidelines

  • Does labVIEW have a function to solve the following math problem?

    In Labview what is the easiest way to solve the following problem?
    |----             ---|  -1       |--     ---|                |--       --|
    |  1   1   0       |            |   a     |                |    x     |
    |  1   0   1       |            |   b     |     =         |    y     |
    |  0   1   1       |            |   c     |                |    z     |
    |__             __|            |_       _|                |_       _|
    from the equations:
         a = x + y
         b = x + z
         c = y + z         where a, b, c are know values.    The problem I actually have is a system of 9 equations.
    Thank you.

    You have a known matrix, a known vector, and a vector you need to solve for given the equation Ax = b.  This is exactly the problem this VI is designed to solve:
    With the values I made up for a, b, and c, the solution is [2, 3, 4].
    Chris M

  • Does LabVIEW have USB Support?

    Can I read/write to a USB port using LabVIEW?

    Hi
    USB is a bus. You cannot write/read to/from the PCI bus through LV, and the same is with USB. There are no read/write VI's. It's not to compare with RS232, where you have read/write VI's in LV.
    Check this link for further informations:
    http://digital.ni.com/public.nsf/websearch/42B604435E3F9604862565E20043CD30?OpenDocument
    Regards,
    Luca

  • Does labview have drag and drop capability while a program is running

    Suppose I have a cluster with controls of various datatypes on the front panel of one vi. Is it possible to represent that cluster with an icon, and then drag that icon on to the front panel of a second vi? The information in the cluster would then be available in the second vi.

    I did this. Take a look at G Toolbox/Drag&Drop on my web
    page.
    George Zou
    http://gtoolbox.yeah.net
    George Zou
    http://webspace.webring.com/people/og/gtoolbox

  • Does LabVIEW have facilities for printing graphs for reports?

    Hello,
    I was wondering if LabVIEW has facilities to print nicely formatted hardcopy printouts of graphs or chart data on a vi? Thanks.

    Check "Report Generation VIs and Functions" in LabVIEW help.

  • For Experts: Why does LabView cause System reboot while accessing hardware with driver?

    Hello NI Developers!
    I use LabView 7.1 under Windows XP
    I have a programm console application which accesses through Jungo Windriver PCI-E board.
    This program works fine - and performs DMA data transfer between PC and Board's memory.
    In order to implement this console application work together with LabView I did following:
    1) Added this function inside the source:
     _declspec(dllexport) void LVMainFunction(uInt32 *IntValue);
    _declspec(dllexport) void LVMainFunction(uInt32 *IntValue)
        AllocConsole();                   //Open new console window
        SetConsoleTitle(L"Debug Window"); //Set a title for console window
        freopen("CONOUT$","a+",stdout); //redirec standard output stream to current window so
                                        // so we are able to see "printf" outputs
       freopen("CONIN$","a+",stdin);    //redirec standard input stream to current window so
                                        // so we are able pass inputs from keyboard
       main();                          //Call applications main function which does all the work
    2) Compiled this new source as DLL library
    3) Call  LVMainFunction(...) function from LabView using Call Library Node
    In the result: Executing VI - opens new console window, shows debug outputs and receives keyboard inputs.
    It works fine till the last function, which perform DMA data transfer - and reboots PC.
    1) Why does this happen?
    2) I understand that opening console from Call Library Node, attaches together this console window and running VI. So If I close one of them - both windows closes.
         So does LabView have somekind of restrictions of accessing Hardware's functions? 
    I can read Board's resource information and view size of memory on board, interrupt functions and other information about device, but when I try to reach
    DMA my system reboots. And I understand that this should be some kind of LabView problem, cause I tried different implementations, even without use of
    console window - and the result is the same.
    3) Should I split the program in to two separate processes and perform data exchange using Sockets or Pipes techology?
    Thank you in advance!
    ACiDUser
    Message Edited by ACiDuser on 11-13-2008 09:37 AM

    Hello!
    At LAST!!!
    I solved this problem!
    From the beginning I was following National Instruments manual on how to build DLL with external IDE:
      http://zone.ni.com/reference/en-XX/help/371361A-01​/lvhowto/building_library_project/
    Set the Struct member alignment control to 1 Byte.
    Now this option caused my PC to reboot!
    So could someone explain  why this happened? and If it is a bad tip, so it's better to remove from manual. Then other people will not have such problems as I did
    - wasting 2 monthes of time determining the problem. 
    I changed it to  Set the Struct member alignment control to DEFAULT.
    and now everything works fine.
    Regards
    Message Edited by ACiDuser on 11-13-2008 11:14 AM

  • Does anybody have any experience on generating SSH key in Labview?

    I'm developing a tool in Labview and this tool needs to generate SSH key then copy them out. I don't see a function in Labview that can generate SSH key pairs. I've tried external programs puttygen.exe and ssh-keygen. None of them are ideal solutions. Because puttygen needs mouse and button press interactions (user interface) and ssh-keygen needs cygwin installation. 
    Does anyone have any better ideas?  
    Thanks very much!

    I have another question:
    I used ssh-keygen with System Exec.vi. The code works fine on my XP machine. But it doesn't work on windows 7 enterprise machine. It seems that windows 7 has different security settings. But I tried to use different location for the working directory for System Exec.vi and it still wouldn't work.
    I've attached a snapshot of my code here. I even tried to just have ssh-keygen in the command line and it didn't work either.
    Does anyone have any ideas?
    Thanks very much!
    Attachments:
    ssh-keygen.png ‏24 KB

  • I can not create an Installer, After install the Vision Builder Demo and then uninstall it. I can not create a Labview installer anymore, it asks me for a Vision Builder Installer, even if My Labview program does not have nothing to do with it...

    I can not create an Installer on LabView, After install the Vision Builder Demo and then uninstall it. I can not create a Labview installer anymore, it asks me for a Vision Builder Installer, even if My Labview program does not have nothing to do with it...
    Solved!
    Go to Solution.

     Hi Shada this can happen if you are including additional installers to your installer for example DAQmx. When you are doing this the installer has to include other files like MAX (Measuremente and Automation Explorer). Probably when you installed Vision Builder it updated MAX, so when your installer is trying to Include MAX, its asking for the source where it was installed in your computer in this case Vision Builder.
     Here you can cache the information so its not asked again, or you can download a newer version fo DAQmx, so it will update MAX and change de dependecy.
     You can find more details about this issue in this KB:
    KnowledgeBase 3S88PJMY: Why Do I Get A "Missing Distribution" Error When Trying to Build an Installe...
    And for keeping a copy here is more info:
     How Do I Stop the Missing Distribution Notification Each Time I Build An Installer?
    Best Regards
    Benjamin C
    Senior Systems Engineer // CLA // CLED // CTD

  • Does anyone have an example VI about how to call the animatewindow function in the user32.dll using CLN in Labview?

      I want to call the WinAPI function-animatewindow in user32.dll to produce some special effect when showing or hidding windows, but i don't know how to using this Win API to achieve my purpose?
      Does anyone have an example VI about this application?
      Thanks in advance for your help.

    You have to use the Call Library Function Node to call Windows API functions. The animatewindow function itself has some pretty simple parameters. You first need to get the window handle. There are a set of Windows API Function Utilities (32-bit) for LabVIEW that you can use. In there there is a VI (Get Window Refnum) that gets the window handle. It's a simple call to a Windows API function. You would call the animatewindow function in the same way. In this case there are 3 parameters: the window handle (returned by a FindWindow API call), a DWORD (32-bit integer) for the duration, and another DWORD for the flags.

Maybe you are looking for

  • Problem in tagging the object to Transport Request

    Hello Experts, I have installed 0FISCVARNT using BI Content, but when i try to change the package of the standard object and save it under TR, it is not allowing me to change the package from local class. Please provide me any suggestions, if you hav

  • The BPM application server is not available

    Hello there I have installed and configured Aqualogic Enterprise for Weblogic from scratch following the manual http://edocs.bea.com/albsi/docs57/adminguide/index.html. I have my weblogic server started and have started servicing all requests for wlj

  • LSO - XI - Skillsoft integration, how to launch external course

    Hi Gurus, I am working on a scenario where we are launching and tracking web based courses (Skill soft a third party). Let me give you more details of my scenario. 1) Commnication is from SAP LSO System to Third Party(Skill Soft) through PI(XI). 2) W

  • Error in Servlet

    I am trying one servlet. But during compilation it is giving errors. My Code : // This Servlet tries to get the meaning of the word Client has entered. import java.io.*; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; public

  • I downloaded Super8 app to my itunes but i cannot get it to my iphone4 even by sync?

    I downloaded Super8 app to my itunes but i cannot get it to my iphone4 even by sync? First i tried to download it via ipone4 but it said this app is over 20mb download it to your itunes. I did it but i can't get it to my iphone. Thanks indeed.