Condensers TFA spectrogram (waveform)

Similar Questions

• Spectrogram - 50% overlap condensers

  Hello everyone...

  I have a table with 1024 points, and from there, I created a waveform with DT 0.1.

  I need to make an analysis of condensers spectrogram using layers of 512 points.

  Segment number WE'll point 0 point 512

  Segment TWO will pass away to the point of 768 256

  Segment THREE will pass away 512 to 1024

  I don't know how to set up the spectrogram VI condensers for this kind of analysis. Sample he attached.

  Thanks in advance for any kind of help.

  Dan07

  
  

• Spectrogram of base to acquire his VI

  Hello

  Recently, I started to dive into LabView, and I what I imagine to be a pretty basic question here. I'm using LabVIEW 8.5.

  I use the VI of its acquisition to get data from an external microphone, and I can convert a waveform display this waveform on a waveform chart dynamic data, perform, and display the FFT frequency spectrum.

  What I can't understand, however, is how to feed this waveform data in spectrogram VI condensers (then in a graph of intensity) so that I can see the amplitude of time/frequency behavior.

  Ideally I'd like a spectrogram in real-time that takes data on at least 5 seconds, but it also would be a spectrogram that is created after the program is run and then stopped. Help a beginner here. I appreciate it.

  I have attached the VI of sound entry base that I'm doing the spectrogram of.

  Hi Zed8,

  The function you will have to use is the component of waveform get and from there, you will be able to connect the component Y Condensors spectrogram VI then in a graph of intensity.  Here is a screen shot with red squares around what I modified in your code and attached the modified code.  I added calendar because it is just good programming practice. I hope this helps!

  

  Kim W.

• Viewfinder LUT vs exposure tools (Zebra / waveform)

  Hi guys,.

  Discussions on our new found access to MLUTs and the AE CINE was great, thanks for all the info fascinating so far. So forgive me if this has already been covered, but I have two questions:

  (A).. .for MLUTs in the viewfinder to be of any practical, why use the waveform monitor and the Zebra reacts to the MLUT when applied, as opposed to the same as if the MLUT has not been applied to all? IE - as an image in the viewfinder as slog2 sgamut my Zebra / wave give me information of the exhibition which is very useful (next to my light meter) but when I apply, say, the REC709 MLUT of the VF, news of Zebra and waveform to adapt to the new image - so REC 709 points out, blow and my zebras tell me now that the parts of the image is blown... But I'm still recording to SxS cards like sLog2 sLog2 - so, in reality, this info is not get blown at all.

  So what I mean: the REC709 MLUT is ideal to boost the brightness etc. in the viewfinder and makes the image easier on the eye than the image dark sLog2, but I always feel like my tools of exposure to expose properly for the image being recorded to the card (in this case sLog2). I hope that all makes sense... Accept others, or am I missing something here?

  and the second point is:

  (B).. .throughout all the upgrades for the camera by setting the number 2 zebras at 109% don't turn on for me in the VF, despite an image being obviously blown. No more than 108%, or 107%. However the zebras behave corectly to 106% and will show the 'Zebra lines' when the image is burned.

  Is there a reason why 109% zebras does not illuminate, or am I missing something here too?

  Thanks for all your comments guys - happy shooting.

  Tom

  www.tomdavid.com.au

  
  

• How to open file audio waveform

  We have a file on a USB audio waveform.  iTunes will not play it... any suggestions or recommendations on another application to use or download?  Thank you!

  VLC download it here: VLC for Mac OS X

• Scale of waveform

  In case others were too curious, our fantastic Canadian camera Sony rep gave us this scale of waveform.

  

  Currently, you cannot activate the display full screen, we are looking at this for a possible future update

  Concerning

  Peter

• Number of averages for time waveform acquisition

  Hello

  It is on the configuration of the device - settings of the acquisition.

  in the parameters of the collection file, can I know is there a way to feed the number of averages and % of overlap between averages aquire waving time.

  Thank you!!

  BR

  Pattabi

  In version 3.0 of InsightCM, we will support an average and overlap on the data of the spectrum Viewer.  These settings will be applied only to the visualization of the spectral data and will not apply to calculations on the waveform or spectral data form.

  This will meet your needs?  Or are you interested in doing an average and are superimposed on the spectral data to then be used for calculations that are based on spectral data - such as 1 x Magnitude, etc.. ?

  Thanks for the question.

  -alan

• Restart waveform immediately start trigger

  I create a waveform 50 ms with an SMU-5451 in SMU-1078 chassis with a controller of SMU-8840 running Labview RT.  The waveform is currently triggered by a pulse of a counter of data acquisition because the timing of the wave must be closely synchronized with data on the acquisition of data collection.  However, this approach is problematic because it is difficult to produce a continuous of the 5451 signal when it is triggered in this way.  If the waveform is exactly 50 ms long, will miss the start trigger.  I can tolerate losing at the end of the wave, but I can't tolerate having a gap in the output, and I need the waveform to start exactly on the edge of outbreak of 50 ms.  I can configure the 5451 to accept a trigger start and restart the wave immediately rather than wait for the current iteration of the waveform to complete?

  I guess I could use a complete the 5451 event to trigger the acquisition of data instead, but I guess there is a way for me to do what I want.

  Are you familiar with the mode "script"? You might be able to use this example script:

  script restartWhenTriggeredScript
  
    Repeat forever
  
      generate wfm
  
      break on scriptTrigger0
  
        Repeat forever
  
          generate wfm
  
        end repeat
  
      end break
  
    end repeat
  
  end of script

  Basically, the idea is that, when it receives a trigger, it stops the execution of the inner loop and finish the iteration of the outer loop. Then it will start again from the beginning and to the inner loop.

  Please let us know if that fixes the problem.

• Arbitrary waveforms with LVM file

  Before, to import a file of arbitrary waveforms to VirtualBench environment was carried out thanks to an option in the toolbar of the menu drop down and the Import Wizard allows import of files LVM. Since a more recent firmware update, it is now accomplished in the Panel containing the options for the function generator, but forced the wizard to import the files .txt and .csv only. Has anyone found how to load an arbitrary waveform as file LVM in the most recent update of the firmware?

  Jesse wrote:

  Before this function arbitrary waveforms, it was possible to load a file of .lvm for a waveform on the channel (1 or 2) and display it in the GUI of VirtualBench.

  You can load a waveform in the ASM or another instrument in the VirtualBench GUI?

  The only similar device that has VirtualBench is a waveform of reference for the scope, which was also added in 15.2. The post office announced that I linked above has a video showing this feature as well.

  You have screenshots of previous undergraduate design projects? I still think that we are badly understand each other.

• waveform sampling

  I read a sine wave using a data acquisition with a sampling frequency of 250 Hz. Once I acquire the signal, I get the component signal Y and multiply it by a factor inside a matlab script. I use the wave build function to retrieve the waeform and display it. If I put the component dt of my function to build in 0.01 waveform, this means that the signal is sampled at 100 Hz?

  navinavi wrote:

  If I put the component dt of my function to build in 0.01 waveform, this means that the signal is sampled at 100 Hz?

  Not exactly.  You are just lying to the display, which gives it something which has been sampled at 250 Hz and claiming that it was sampled at 100 Hz.  If you filter on it or whatever it is in the frequency domain, everything will be far away.

• Import MATLAB generated the file ascii in the Analog Waveform Editor

  Hi all

  I tried to create signals by the Analog Waveform Editor. I have some Waveform generated from MATLAB and recorded as ASCII files, following the instructions on this Web page OR, but it did not work properly. For example, if I produce a column to fill with 0.5 and import the file into the analog signal generator, all I get is a huge series of random number. I missed a few steps in the import of the waveform?

  Thank you!!

  Just for your reference, I could almost in half the size of your file just by saving as .hws. Also to answer your last point, you may have issues opening / importing your .txt file because it may have been opened in another program at the same time. Make sure that you have closed it in Notepad or Excel or other programs which may still be locking on the reference.

  Kind regards

  Jason L.

• cDAQ-9263 modules do not allow independent generation of waveform

  I have a client with a cDAQ-9178 crate with two 9263 modules. When it tries to start two independent signals on both modules build tasks, he gets an error in DAQmxWriteAnalogF64:

  device cDAQ1Mod2:-50103: NI Platform Services: the specified resource is reserved. The operation could not be performed as indicated.

  Extended Info:

  Platform AND Services: The specified resource is reserved. The operation could not be performed as indicated.

  Task name: cDAQ1Mod2AO

  State code:-50103

  It seems that it must be a driver bug-usually these "reserved resource" errors occur when you try to validate the task, but it comes from DAQmxWriteAnalogF64. It verifies that he can start two independent signals on two completely independent devices build tasks, but he cannot do it on two modules in his cage.

  Is it a kind of witch-hunt with modules in a box? or a driver bug? He tells me that he has updated the driver until his "last from the website of OR" with no luck.

  Thanks in advance!

  The cDAQ-9178 has only a simple timing analog; output engine You can't have a timed analog output generators of waveforms of the task at a time. Unfortunately, the mistakes of 'the specified resource is reserved' are not more descriptive.

  The call of DAQmxWriteAnalogF64 pushes the task as a 'reserve', which is where he tries to book the timing (and other resources) engine: the first task will succeed, but subsequent AO to the tasks will not be until the first has reserved resources.

  The two tasks are intended to operate simultaneously at the same speed? You can put chains of two modules in the same task by using a string of physicalChannel as cDAQ1Mod1 / ao0:3, cDAQ1Mod2 / ao0:3 with DAQmxCreateAOVoltageChan.

• SCOPE NI Y waveform versus time

  Hello

  I use NI PXI-5114 scope, how can I get the values of x (increment of time) of the measures I / O-> OR-scope for my chart.

  Thank you

  For niScope read, simply choose the polymorphic case that produces a waveform (or an array of waveforms for multiple channels) and that wire up to your chart.  Waveform type data included the start time and sampling rate for the chart may include the X for you.

• Error 1074118650 on niDMM configures waveform Acquisition

  I modified the waveform of DMM demo, and it worked very well until I left work yesterday.  This morning, I get:

  "Error 1074118650 occurred at niDMM sets wave Acquisition.vi.

  Possible reasons:
  The specified file could not be opened. The operation could not be performed as indicated. »

  The demo of DMM unmodified waveform produces the same error.  Other screws I have who use configured Waveform Acquisition.vi niDMM work.  I tried to restart Labview.  I've added the main VI for a project and check that dependencies are where they should be.  Any suggestions to solve this problem would be appreciated.  Thank you.

  Hello

  I found documentation indicating that when this error occurs in what concerns a 407 x DMM, the problem could be that the F1 fuse connected to the 12V of the isolated side power has blown. You can verify that this is the case by using a DMM to hand to check the continuity across the fuse.

  As this seems to have been an isolated problem, I doubt that is the case. I don't know why this happens only once. Perhaps there was a power failure or other variables that ignore us. If however, it is a problem, you may call OR and ask to do an RMA number (Return Merchandise Authorization). I hope this helps!

• Export of multiple markers in mode of arbitrary waveforms

  I use the example Fgen Arb Marker.vi waveform (in the examples of LV2011) as the basis for the production of markers and exporting to PFI0 and PFI1 on a PXI-5422.

  I added a 2nd call of property node after the first configuration of marker1.  The program runs without error, but only generates marker0.  It seems that if I configure Active Channel as 'marker1' or 'marker2' or 'marker3' or 'marker4', the property node has no effect.  I expect that subsequent calls must set up additional markers.

  I used the script mode to configure several markers with my generator signal as well, but I'm trying to understand how things work in mode of arbitrary signals for some legacy code.

  

  So just to summarize, things that I confused me more than before and during this thread have been:

  1. lack of feedback of error/warning when configuring marker1-marker3 in wave arb mode

  2. the general statement "a marker by segment" seems inaccurate given the script arb mode

  3. script view arb is not mentioned in the PXI-5422 or PXI-5421 hardware specification

  1. the Council supports 4 markers, numbered 0 - 3. So when you configure those, you do not get an error. When you configure marker4 you get an error because it does not exist.

  2. I think you are right, that the statement applies to arbitrary waveform Mode, no Mode Script.

  3. it's probably another problem of documentation. Script mode was not supported when 5421/5422 first came out, so my guess is that when a support because it has been added, the documentation was not updated.

  Good luck

  Marcos (not Marco )