the power of the spectrum graph and butterworth filter

Hello

I am beginner in labview, I want to see the power spectrum of the sound samples, I want to see if there is any reason in these samples.

I use spectral measure, and then I filtered with butterworth filter samples. For output I using waveform graphs.

Before filtering the signal, I'm in the x axis of the graph between 0-22500 and the data mostly in 0-2500.

I've tried to filter using these values (fs = 1000 Hz, 0.125 hz = fl and fh = 500 hz) and the graphics almost the same thing but the axis of the graph is between 0-0, 5.

issues related to the:

What is the x axis properties? Why is different, but the graphics are the same?

Make the mistake with the program?

Hi Limavolt,

You have a problem with the bandpass filter VI, this VI generates only the signal of value i.e. table DBL. The signal is a cluster.

solution 1: you need to calculate 'dt' using the sampling frequency and use VI waveform construction to generate a signal's own scaling. 

Normally, dt = sampling frequency/No. samples

Solution 2: replace the VI butterworth filter with filter VI express, this will produce signal without scaling.

Tags: NI Software

Similar Questions

  • With the help of a Butterworth filter without phase shift

    Hello

    I found this reference to the use of a Butterworth filter without phase shift http://zone.ni.com/devzone/cda/epd/p/id/2775 but I can't open the sample with LabView 2011.  Can anyone help?  The referenced file is attached.

    Is there another or the best way to do this?

    Thank you

    Attached is a version saved in LV2009.

    In such cases, you can validate the vi to the discussion of queries VI Upconvert.

    Ben64

  • TO RESET THE GRAPH AND TABLE SEQUENCE EVEN STRUCTURE IS NOT EXECUTED.

    Hello everyone, I made this vi which runs automatically at the beginning and I can't use my power butoon to control this vi. Now, I want to clear the table and graph vi even when the structure of sequence is not executed as the start/stop button. And I want also when I run the program both the graph and the table should be cleared. I tried a lot of things, but as I'm new to labview I can't do. Thanks in advance.


  • power output of the spectrum in table

    Hello

    I have a signal and I need to make the power spectrum. How can we separate the information contained in the output of the power spectrum cluster? I tried to use the unbundle, but it gives me an error: "the type of the source is table 1 d of the cluster of 3 elements. The sink type is cluster of items 0 "if I click on the unbundle it won't let me select anything, it says empty..." Does anyone have an idea how to solve this, please?

    Array of generation is not your friend here actually I replace the generation arrary and the screw Express Power Spectum with 'FFT Power Spectrum and PSD.vi' search the palette or use quick drop to locate him.

    Why shoot there since just filtered signal to rebuild the same waveform?  Wire the waveform to the second power of DSP and FFT spectrum .vi directly

  • I have problems to restart of Yosemite, after power failure during the new backup, and now HD is also blocked.

    I have problems to restart of Yosemite, after power failure during the new backup, and now HD is also blocked.

    I tried the holding of 'command-r' and 'option' to see if the problem can be resolved or try any boot from a boot disk, my old backup, USB function start - but after a slow long process it all just stops.

    There is software on my HD that I don't want to lose by simply reformatting the computer, because I am now in a different country, far from my house, which is another problem of the Apple Store, to reinstall my OS from Yosemite on the www.

    Hey AmnonMikeCohen,

    Thank you for being a part of the communities of Apple Support.

    I understand that your Mac is not start properly after the power went out.  Let's start with resetting the SMC and NVRAM on your Mac and see if he can start from there:

    Reset the management system (SCM) controller on your Mac.

    How to reset the NVRAM on your Mac.

    See you soon.

  • My iphone 6 does not light, I held the home button and power at the same time and no vibration or no sign of life, any suggestions as to what it could be would be appreciated

    Phone bought 3 days ago and I fight to turn it on, it's just a black screen, the phone records into iTunes but does not turn, I tried holding down the home button and power at the same time and still nothing, I presume that it's a battery problem as if it was the backlight then the phone vibrated when you press the power button help Please!

    Marley6921 wrote:

    Phone bought 3 days ago and I fight to turn it on, it's just a black screen, the phone records into iTunes but does not turn, I tried holding down the home button and power at the same time and still nothing, I presume that it's a battery problem as if it was the backlight then the phone vibrated when you press the power button help Please!

    Put it on wait ten minutes if the phone did not come one, then hold down the sleep/Home button until you see the apple logo and then release, make sure that the phone is still connected to the charger.

  • Firefox does not (Cup) of the lower edge and the right edge of the graph. IE10 does not work.

    Firefox does not (Cup) of the lower edge and the right edge of the graph. IE10 does not work.
    Office Windows 7 2009 service pack 1 Firefox 26 Internet Explorer 10
    Flash player version 11.9.900.170 plugin 11.9.900.170 activex version used by Firefox

    Problem began late November when Miniclip.com forced updated flash player to version above
    -C' was when they started to play a video advertising in the game box before you could start.

    Have screen shots of IE10 and Firefox26 side-by-side clearly showing the problem - how these can be downloaded for see you? E-mail? Web site? This place seems to be text only?

    In the meanwhile the grandchildren and self have learned to use IE10 instead of Firefox that we prefer.
    Their House of Windows XP has same Flash Player in Firefox and it works fine.

    Downloaded two screenshots on Media Gallery.

    You can not attach a screenshot in the first row who starts a thread, but you can do it in subsequent responses.

    Try disabling hardware acceleration in Firefox (you will need to close and restart Firefox).

    • Tools > Options > advanced > General > Browsing: "use hardware acceleration when available.

    See also:

    Reset the zoom of page on pages that are causing problems.

    • View > Zoom > reset (Ctrl + 0 (zero); 0 + Command on Mac)
  • recently, my mac started hanging. the screen freezes and I have to use the power button to turn it off

    recently, my mac started hanging. the screen freezes and I have to use the power button to turn it off

    Run this test and post the results here.

    http://www.etresoft.com/etrecheck

  • HP Pavilion 500-164: the upgrade of the graphics card and power supply on a HP Pavilion 500-164

    I'll be upgrading my HP pavilions integrated HD graphics 8570 D a STRIX ASUS GeForce GTX overclocked 2 GB DDR5 128 - bit DisplayPort HDMI 1 750TI. 4 a/DVI-I graphics card. With that I also improve my diet to a Thermaltake TR2 500W 240 pins power power TR-500. I was wondering if it of ok to do on the computer and will not damage it. It is extra steps when I install these. Initially, I got the PC with windows 8 but have upgraded to windows 10.

    Hello

    If the ASUS 750 TI requires a 6-pin auxiliary power connector and your computer is running a version of HP 8 BIOS then you should be OK.  Open your PC and measure to make sure that graphics card fits.  In addition, open the command RUN and enter: MSINFO32

    Your computer is running a version of HP 8 BIOS?  If so, and if it is possible to install the graphics card then go ahead. Find out what the return policy is before you buy.

    Thanks for posting on the forum.

  • Satellite 1410-604: I lost the screen saver and power management system

    I have a Satellite 1410-604. I lost my screensaver and cannot access the Toshiba power management system: I click and nothing happens. I saw a suggestion to run the system restore. When I go to system restore it says it is running, but is there something more specific that I can do?

    Thank you!

    I put t know what you did with your operating system, but more often if the system restore option enabled, then it shouldn't be a problem to restore the operating system to the beginning
    Simply, start the system restore and choose the starting point that was automatically created.

    I also found this useful FAQ:
    http://support.toshiba-tro.de/KB0/TSB6B01MB000BR01.htm

    What about installation? Have you created an image?

  • Satellite A135 - power but a black screen and the drive does not

    Hi, hope someone can help me.

    I have an A135 -? and yesterday I went to turn it on and the screen went black, no logo, nothing. The power light is on and I hear a fan running but the drive light is not either flashing nor immediately. It is only when I restart the computer. Any suggestion would be grealty appreciated.

    My boss will kill me because I have not backed up the most recent work I did for him.

    Thank you
    The

    Hey Buddy,

    > It turns on only when I restart the computer.
    Wait a moment, please
    How do you restart the laptop if it doesn t start?

    In any case, she could relate to a hardware malfunction. Have you plugged an external display to check if the internal LCD working properly?

    See also this article from Toshiba:
    [What steps must be followed if your Toshiba laptop does not start? | http://forums.computers.toshiba-europe.com/forums/ann.jspa?annID=21]

    By the way: you can back up your data from another computer. So to remove the HARD drive and put it in a box external HARD disk. Then you have access to all data.

  • Multiple and different axis-related channels are on the same graph

    Hello

    I searched the forums and google trying to find out how to trace my 48 channels in a single chart and according to the plots of units he value axis 1 of 4.

    I have 48 channels all of them share the same time base axis.

    48 channels are mixed of flow, pressure, Temp and other bag. The units are located in the 'Units' property to the string.

    I would have 4 axis to account for my 4 units and hold all 48 channels to draw on the same graph, aloted to the axis of sorts.

    Thank you I have maybe for what is right, as it is a small segment of my script script. Help, advice or information would be greatly appreciated. I am struggling to find documentation to know where to start with this.

    Best wishes

    KR

    Hi KR,.

    After talking to my colleagues, I think that you can now have a solution to this, but for the benefit of third parties, the solution is to use "Related curve" scaling in the axis system display 2D of the pane window VIEW. To have this feature enabled you must be using n or n axes systems.

    More information can be found here: http://zone.ni.com/reference/en-XX/help/370858M-01/dlgview/dlgview/view_scaling_manual_dialog/

  • Write the spectrum of power + other tables to PDM

    Hello world!

    I am building a project of data acquisition, using compactDAQ to measure and record data from an accelerometer.

    The main objective is to save the data of acceleration, speed, displacement and frequency in a PDM spectrum, but I'm having some trouble it.

    As you can see in the attached file I had coveted, data of the wizard Express in a waveform to unbundle + build using waveform, after that I wired this waveform of a generation a table with data ACC, of speed and movement.

    The problem arises with the viewer TDMS data reading because the plot of the frequency band is not the x-axis with the right values, instead display the data of frequency it indicates the date and time that does not correspond with the PC, but the fact is that I need the frequency values.

    Is it possible to change and enter the correct values in the TMDS file?

    Thanks in advance,

    Omar

    The TDMS Viewer included with LabVIEW is not going to meet the needs of each.  And this is a case where it is inadequate.  Your data is stored correctly (at least the image looks right.  Also next time code postal no pictures.  Attach a VI or a code snippet.

    When you read your data PDM Regularisez using a DDHN reading him indicate you the type of data to expect, and there you can provide an analog waveform.  Then when you read back you will have the same dT and T0 he wrote with.  The problem with the Viewer is probably does not know it is a waveform and is simply read data from amplitude and then confuse around the X axis.

    You can write your own code to read the file, make a copy of the existing Viewer, then change it. Or my favorite is try Scout by Signal.X.  They took the standard TDMS Viewer and gave it an overhaul.  You might get lucky and open the data normally here.

    http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/211879

  • I have a aspire 5253, power watch normal bright screen with the logo Acer and F2 set up

    I have a aspire 5253, power watch normal bright screen with the logo Acer and F2 put in place down, but only for a few seconds, then it goes very dark, almost impossible to see what is on the screen, but there is something.

    I connect a monitor to the VGA connector and th PC works fine.

    I've updated the drivers, but it shows always available, as the main screen attached to the was'nt PC he all of a single screen

    to detect not to bring, and isentified on ly show 1 on both screens, PC built in display still very dark, like the backlight is not on

    reboot always perfect watch on the screen for a few seconds then dark

    Thanks for help

    by chance, I moved the cable button / stop for the Office and the screen turned on

    I checked the cable, it was slightly broken by the brokrn hinge

    I just had to cable and now it works fine

  • When I change how a user connects power on and off a screen appears saying "client for Netware has disabled the Welcome screen and the fast user switching. To restore these features...

    Original title: how to uninstall client services for netware?

    When I change how a user connects power on and off a screen appears saying "client for Netware has disabled the Welcome screen and the fast user switching. To restore these features, you must uninstall client services for Netware... But it is impossible to find... Help?

    Hello LindsayJune,

    Click the Start button.
    Click on Control Panel. Select network connections
    Right click on 'Connect to the Local network', then click 'properties '.
    Search for "Client Service for NetWare" slot "this connection uses the following items."
    Click it, and then click the "Uninstall" button
    Restart your computer.

    Uninstall client for Netware feature will allow the option of quick change of user on your computer.

    I hope this helps.

Maybe you are looking for