Mobile average filter

Similar Questions

• Moving average filter

  Hello. I want to do a mobile medium filter for my VI. I did a basic FIR filter... but I have not a clue how to make a filter means mobile.
  + I want a button to play the input wav file... How can I do this?

  This is the vi:

  

  My tip for a moving average is to use the FIR filter with specific coefficients.

  

  Regarding your wav file playback, discover the graphics and the sound palette.  I have little experience with them, but I know that there is a screw there to read your wav file.

• Moving average filter w / continuous data acquisition

  I'm looking to filter multiple signals of noisey. I am currently using a NI9203 w / a cDAQ-9174 sampling to 1000 Hz. I use DAQmx vi to start the task and acquire the signal. I tried using coefficients.vi smoothing filter combined with IIF filter.vi (Avg.png movement) it seems to work for simulated signals and recorded data. However, when I try to use this configuration for an average of real time it cut everything just all signals to zero.  I looked into the use of shift registers, but to get the necessary result, it seems that I have to use hundreds of items.

  In the end, I'm trying to filter the signal to get a constant more of reading for the user. For example during operation, the user needs to review the current state of the values in real time. It's currently difficult when the noise indicates the values of +/-100 changing every 100ms.

  For any help or suggestion would be appreciated, thanks in advance.

  Thank you all for the help and advice. I have attached the vi that I used to solve the problem, one of my major problems was not timing DAQmx using. Attaché in 2012 and 2013.

• How to find the mobile average for perticular time step for the same time series

  Hi all

  I'm new in labview and I have a question. I have a huge text with the value of different pressure of various ports.

  I do the VI in which all first I read the text file and identify the column of perticular port. In this column, there is pressure value 32768.

  Port of Port 102 times Num Port 101 103... Port 532

  0         1

  2 0.001

  .          .

  .          .

  50 32768

  And reading this all takes 50 sec and I divide this reading in 4.5 sec... There are in all 4.5 sec 2969 values...

  Now, please check the attached VI... I am able to find the average value in step 12 2969 value time...

  Now, I want to do is to find the average value of 2969 (2970 to 5938) values with time of 12 steps and so on up to 32768. It is 11 times in the series...

  So anyone can change my VI?

  Thank you

  Hello

  Thank you very much. It's the perfect VI that suits my needs.

  Thank you again... Have a great day ahead.

• slope of the mobile medium multipass filter

  Hey guys,.

  Here is a picture of the frequency response of a moving average filter multipass. The number of steps tells you how often the data is passed through the filter.

  As I am interested in the behaviour of different slope of the different stages, I wanted to ask you how to determine the slope.

  I take the envelope to calculate the roll off (= slope) of the filter?

  In fact, it takes 1 pass (= 1 floor) is 20dB/Dekade, 2 cols = 40dB/dekade and so on...

  I hope you can help me.

  Kind regards

  Slev1n

  You must set the plots to semi-log: vertical axis in dB and the horizontal axis (frequency) in logarithmic scale. The slope must be of the envelope of this curve.

  For example, a reduction of 20 dB/decade of 0.003 0,009 Hz Hz is 9.5dB (20 * log10(.009/003)). Your 1 stage filter (white line) is - 13.5dB to 0.003 Hz and - 23dB 0,009 Hz, a difference of - 9.5dB.

• exponential response moving average stage fpga

  Hey guys,.

  I have a problem with my filter, the exponential weighted moving average filter (IIR 1 st order.). Excerpt from the book: understand the digital signal processing (Richard Lyons) I have the following formula, calculate the frequency of 3dB (CF) of alpha. Alpha is the parameter to control the filter.

  Differential equation of the filter: y [n] = x [n] * alpha + (1 - alpha) * y [n-1]

  Relationship between CF and alpha: alpha = cos(2fc/fs) - 1 + sqrt [cos²(2fc/fs) - 4 * cos(2fc/fs) + 3]

  If I now choose a frequency of 3 dB from 0, 0794Hz (time constant (TC) = 2 s) alpha = 0,00169621. (fs = 94)

  For a filter command 1st IIR, the rise time (your) of the stepresponse (from 10% to 90%) is: ta = 2, 2 * TC which translates your = 4, 4S.

  But if I simulate the step response, my rise time is about 3 times this value at 14.

  I can't explain why the response of my filter is so much different. For my Moving Average filter, the calculated and simulated rise time are equal.

  I have the vi that is performed on the attached FPGA. Maybe someone can find a mistake...

  Greetz

  Slev1n

  Hey ZX81.

  Thank you very much for your detailed answer.

  Regarding the issue with the rise time, I think I've found the error. You might be right, that the formula is not correct, or which is most probably misunderstood by me and put in the wrong context.

  When I was cycling home from work I remembered a practical function of labview: 'coefficients.vi filter smoothing' here you only need to define tau/TC and fs and it calculates the numerator and the denominator for the moving average exponential and the moving average. Offering it is alpha I could compare the result of the formula I've used and there was a big difference. LabVIEW uses the following formula: alpha = 1 - exp (-1 /(fs*TC)). With this formula, TC = 2 s is equal to alpha = 0, 0053.

  And with this alpha my simulation works! Risetime 4.4 s

  Quote you: "in general, at this stage, I have maturities adjust alpha until my results matching what I wanted and move." I would like to do the same thing, but as it's my thesis I have to solve such things

  Now, back to the rounded questions. I understand that the small values are a more serious problem. This filter is used in a Lock In, the values are going to be REALLY small. But I've already tested on our measuring device and it works, to that effect, I'll test your version as well, but if I get no problems, I guess I keep to the 40bits. Simulating the following configuration, caused an error of 2.3%. 57 bits using reduced the error less than 1%. I think that 40bits should be sufficient.

  Alpha = 0, 000335693

  entry = 1, 19209E-7

  And regarding resources, I have no worries. Although using a myrio ultimately I still have a lot of DSP Slices for the multiplication and 10% in flip flops.

  So I guess that this matter is resolved. Thanks for your great help and interesting reflections.

  Kind regards

  Slev1n

• Average selection HSB + setting HSB

  Bit of a an unusual one for you here; but here it is anyway... Is it possible to get the average TSL value of a randomly selected area without applying the average filter, using script?  The selection is already created before the script is executed, so all the script needs to do is to get the average value of the selected area HSB.  In addition, it is possible to set then selected values STL of the region to a predetermined?  I want to keep the detail, but say, darken an area if it is brighter than the preset or Desaturate it if the color is too strong.  Any ideas on how to make these / if it is possible to do these?  I'm sure the other is feasible but not so sure about the first one, so any help is appreciated.

  dgolberg

  I tend to use paths so that they cannot be ideally mounted on stuff, but in this case, I suppose to create a work path is a valid option to determine a point of the area of a layer.

  This Script will likely include a control to check the preferences are defined on morw than 6 States in history, but most of the users who probably have anyway.

  You can try this?

  // get hue, saturation and brightness from an averaged layer;
  // 2011; use it at your own risk;
  #target photoshop
  if (app.documents.length > 0) {
  if (app.activeDocument.activeLayer.kind == LayerKind.NORMAL) {
  var myDocument = app.activeDocument;
  // set to pixels;
  var originalRulerUnits = app.preferences.rulerUnits;
  app.preferences.rulerUnits = Units.PIXELS;
  var historyState = myDocument.activeHistoryState;
  try {
  // apply average filter;
  myDocument.activeLayer.applyAverage();
  hideOthers ();
  // load layer transparency;
  // =======================================================
  var idsetd = charIDToTypeID( "setd" );
      var desc4 = new ActionDescriptor();
      var idnull = charIDToTypeID( "null" );
          var ref2 = new ActionReference();
          var idChnl = charIDToTypeID( "Chnl" );
          var idfsel = charIDToTypeID( "fsel" );
          ref2.putProperty( idChnl, idfsel );
      desc4.putReference( idnull, ref2 );
      var idT = charIDToTypeID( "T   " );
          var ref3 = new ActionReference();
          var idChnl = charIDToTypeID( "Chnl" );
          var idChnl = charIDToTypeID( "Chnl" );
          var idTrsp = charIDToTypeID( "Trsp" );
          ref3.putEnumerated( idChnl, idChnl, idTrsp );
      desc4.putReference( idT, ref3 );
  executeAction( idsetd, desc4, DialogModes.NO );
  // contract selection and make path;
  myDocument.selection.contract(50);
  myDocument.selection.makeWorkPath(1);
  // get one point;
  var thePoint = myDocument.pathItems[myDocument.pathItems.length - 1].subPathItems[0].pathPoints[0].anchor;
  // set colorsampler;
  var myColorSampler = myDocument.colorSamplers.add(thePoint);
  // return and set foreground-color;
  var theH = myColorSampler.color.hsb.hue;
  var theS = myColorSampler.color.hsb.saturation;
  var theB = myColorSampler.color.hsb.brightness;
  // undo path and colorsampler;
  myDocument.activeHistoryState = historyState;// myDocument.historyStates[myDocument.historyStates.length - 2];
  alert ("hue "+theH+"\nsaturation "+theS+"\nbrightness "+theB)
  }
  catch (e) {alert ("failed")};
  // reset;
  app.rulerUnits = originalRulerUnits;
  }
  };
  ////// toggle visibility of others //////
  function hideOthers () {
  // =======================================================
  var idShw = charIDToTypeID( "Shw " );
      var desc10 = new ActionDescriptor();
      var idnull = charIDToTypeID( "null" );
          var list4 = new ActionList();
              var ref7 = new ActionReference();
              var idLyr = charIDToTypeID( "Lyr " );
              var idOrdn = charIDToTypeID( "Ordn" );
              var idTrgt = charIDToTypeID( "Trgt" );
              ref7.putEnumerated( idLyr, idOrdn, idTrgt );
          list4.putReference( ref7 );
      desc10.putList( idnull, list4 );
      var idTglO = charIDToTypeID( "TglO" );
      desc10.putBoolean( idTglO, true );
  executeAction( idShw, desc10, DialogModes.NO );
  };
  

• Measurement in HP 34401 time

  Hello

  I made a simple VI then see the measure of HP 34401 multimeter.   I use the functions of VISA to enter SCPI commands and to measure the time I used the Tick count function.

  When I measure the functions DC in my opinion time there all right but there is a problem to the extent of CA. It displays all the time about 800 ms and it's bad for me. I think that this beacause according to the HP 34401 User Guide he owes me one more filter 7 seconds in slow, about 1 second averaging filter and about 500 ms in quick filter. I don't know why, but when I use blocks of drivers HP 34401 build VI and use Single Point measurement it shows quite correct results, but it has immediate trigger and I need bus trigger. Maybe someone could help me with this problem because I am not a user advanced LV

  I've attached a file VI.

  Hello

  I think that Dennis referred to in flat sequence structure in your VI. It is completely redundant, since according to the data flow, programming principles, the wires between the VISA Write subVIs already guarantee the subsequent execution.

  I hope that you managed to get your work request by using the proposed pilots.

• Arduino, labview with DAC

  Hello

  of this program is reading and to generate an analogue signal, pour it, but an analog digital converter of 8 bits is necessary "DAC0800", this last do the conversion remains at its output a negative current.

  UN connected operational "LM358" will transform the negative current to a positive voltage.

  When I measure the voltage at the exit of OPAMP by a multimeter the voltage varies in a way ordered 2 to about 4 volts.

  but when I use the arduino to measure the analogue voltage, the voltage varies in a disorderly way, why I don't know! the of is what program is right!

  Please help me.

  The converter, the connection, the code.

  Remember that a dmm will take multiple readings and average/filter before displaying a measure. Do you do none of this c code before sending data?

• Point by Point to the incorrect values

  I use a loop that retrieves data every 10 seconds or more (ends up being a little more, but is not question.) and whenever it gets data (temperature), it passes through the gap of Point by Point VI in order to produce a cumulative gap and the average. Previously, I used the Point by Point VI average to get the average, but learned that the gap VI had included average.

  My wired terminals is x, standard deviation, mean

  Unwired: sample length, initialize, error

  I ran the VI overnight for a total of about 18 hours, where he collected every 10 seconds (6690 data points). The temperature that has been read began at about 27 ° C and cooled to 25 ° C and then is held. On the façade, the average temperature (for the trial) was 24,977 0.017 ± ° C, which does not seem right to me. So I imported the data into Excel and used '= AVERAGE()' and 'STDEV() =' to get a value of ± 25.860 0,774 ° C.

  Why is there a difference in these values? The only thing I can think is that the gap of Point by Point VI back on, but why can't think. Perhaps because I do not connect any value to the "sample length" Terminal, but I assumed that it would use the entire sample when unwired.

  In fact, the function does exactly what it's supposed to.  If you read the documentation, you'll see that the VI has so many samples for the calculation (default is 100).  If it was actually a mobile average/std deviation.  Help:

  the sample length is the length of each set of incoming data. The VI does the calculation for each set of data. The default value is 100. When you set the length of the sample to zero, the VI calculates a cumulative solution for the input data as soon as you have called or initialized the VI. When the setting of the length of the sample is greater than zero, the VI calculates the solution for only the new set of input data.

  So what you really want to do is the length of the sample in 0.

• Recover a project

  I accidentally deleted a project and I want to. Is it possible to recover the deleted project?

  HI Exrorro,

  What version of draw do you use?

  There is now a feature of archive for the iOS version of Adobe draw (he is coming to Android, but not in the app yet).

  If you accidentally deleted a project and that you use the latest version of the draw (v 3.4) and you had worked on a connection wifi at some point (so your work had the opportunity to sync with the cloud creative) then it should be recoverable in an Archive file on assets.adobe.com

  If you use this version of the draw, please sign in with your Adobe ID to https://assets.adobe.com/assets/mobile?filter=archive and see if your work is there.

  Let me know how things are going.

  Sue.

• XML Parse Error when trying to open files

  After spending a few hours on a piece of work, I received this message:

  "Error could not open the page. XML parsing error.

  When I try to open the file. I know at least two of my files had this error pops up and I'm unable to reopen the files.

  Hi Mireya,

  I'm sorry that you get this error message. I have a few questions:

  Is this just a drawing that you are unable to open?

  If you sign in with your Adobe ID to https://assets.adobe.com/assets/mobile?filter=draw you see the project? If you can, even if it seems empty, you share the project with me?

  Your drawing has a layer of the Image?

  What version of draw do you use? And what version of iOS?

  In addition, given that this could be related to storage, how much free storage space you have on your device (on iOS, check the settings > General > storage & use iCloud > available)?

  Let me know what you find.

  Sue.

• Why the size of my file is so huge?

  I just started using the App to draw Adobe Illustrator on my tablet a few days ago and now noticed how big my file obtained.
  My device crashes because I'm running out of free space.

  
  My project is over 20% and I almost hit 4 GB!
  I even put in place all the layers and resized to make it smaller, oddly enough, it's the largest 1.5 GB file...
  What the hell is going on? I hope someone has an explanation. The app is just great and I hope to work with her more, but take as much space makes it unusable for me. I feel like im the only one with such a problem, I am just learning to work with illustrator propably so it is wrong to some beginners-_ -.

  Or perhaps that these files are supposed to be that big? If Yes, I would need 20 GB + for a project finished, that can't be good...
  Another question is if it's possible to somehow save my projects on my SD card.

  I use an android Tablet by the way.  I hope someone can help me!

  Hi Catalten,

  This is definitely not sound right (I have seen this question before developed on iOS, but not on Andorid). A number of things:

  What version of draw for Android are you using?

  What Android Tablet do you use?

  Can you sign in with your Adobe ID to http://assets.adobe.com/assets/mobile?filter=draw and see if your project is completely synchronized.

  Please let me know and we'll take things from there.

  Sue.

• Time series by using Oracle Data Mining? Is there any equivalent of ARIMA in the MDGS?

  Hello

  I followed the extraction of data from Oracle Press book. I applied regression models to predict continuous variables.

  My use case is to predict the market price of stocks based on historical data.

  I see there R packages to do. Some popular methods that are widely used are ARIMA (Autoregressive integrated mobile average).

  Is there such an offer out-of-the-box in the MDGS?

  Pointers / whitepapers, or do we use component regression?

  Thank you

  Chrystelle

  Hey Lulu,

  MDG does not have an implementation of time series which is precisely part of the SQL in the algorithms of db.

  But AAO (Oracle Advanced Analtyics, ODM is a part of) has an implementation of time-series Oracle which may be useful for you:

  See ore.esm model, documented with examples here: https://docs.oracle.com/cd/E57012_01/doc.141/e56973/procs.htm#BEIEGCDG

  We also have the preparation of data for time series capabilities, listed here: https://docs.oracle.com/cd/E57012_01/doc.141/e56973/procs.htm#BEIJHHCG

  May also be interested to Marcos Campos blog on time series using the current characteristics of ODM/DB: Oracle Data Mining and Analytics: time series Revisited

  Hope it will be useful.

  THX, mark

• Mobile Firefox is unable to filter the results of google by date

  I have mobile Firefox installed on my Nexus 4 side by side with Google Chrome browser. When I do a search on google in mobile Firefox I can't filter results by date, but I can't in Google Chrome browser.

  What Miss me?

  The function to filter the results of google by date is missing from the mobile firefox browser?

  Thank you

  It seems to be part of Google's strategy to dominate the world to retain some features of other browsers. I don't know if there is a solution to force search tools to display in mobile Firefox, but you can try the strategy adopted by another user faced with a deficit of function and use the fake extension to lie to the sites on which browser you use.

  See: Google local search does the same in Firefox as in Chrome. How to repair?