Tv signal processing

Hi there, sorry for our last post; we are noobs at posting ^^
We need to use a parallel port on a computer as data input, since we havent found any direction or advise, or just couldnt find it, we were looking for some help.
We have a
1) Is there any VI or similar for labview that uses parallel port as data input?

I just replied to the other post and now I see this one... LOL!! There are more than I thought LOL!!

Similar Messages

I am using the Order Analysis Toolkit and want to get more information about the compensation for "Reference Signal Processing", which is scarce in the manuals, the website and the examples installed with the toolkit.

I am using the Order Analysis Toolkit and want to get more information about the compensation for "Reference Signal Processing", which is scarce in the manuals, the website and the examples installed with the toolkit.
In particular, I am analyzing the example "Even Angle Reference Signal Processing (Digital Tacho, DAQmx).vi", whose documentation I am reproducing in the following:
DESCRIPTIONS:
This VI demonstrates how to extract even angle reference signals and remove the slow-roll errors. It uses DAQmx VIs to acquire sound or vibration signals and a digital tachometer signal. This VI includes a two-step process: acquire data at low rotational speed to extract even angle reference; use the even angle reference to remove the errors in the vibration signal acquired at normal operation.
INSTRUCTIONS:
1. Run the VI.
2. On the DAQ Configurations tab, specify the sample rate, samples per channel, device and channel configurations, and tachometer channel information.
NOTE: You need to use DSA PXI-447x/PXI-446x and PXI TIO device in a PXI chassis to run this example. The DSA device must be in slot 2 of the PXI chassis.
3. Switch to Extract Even Angle Reference tab. Specify the number of samples to acquire and the # of revs in reference which determines the number of samples in even angle reference. Click Start to take a one-shot data acquisition of the vibration and tachometer signals. After the acquisition, you can see the extracted even angle references in Even Angle Reference.
4. Switch to the Remove Slow-roll Errors tab. Click Start to acquire data continuously and view the compensate results. Click Stop in this tab to stop the acquisition.
ORDER ANALYSIS VIs USED IN THIS EXAMPLE:
1. SVL Scale Voltage to EU.vi
2. OAT Digital Tacho Process.vi
3. OAT Get Even Angle Reference.vi
4. OAT Convert to Even Angle Signal.vi
5. OAT Compensate Even Angle Signal.vi
My question is: How is the synchronization produced at the time of the compensation ? How is it possible to eliminate the errors in a synchronized fashion with respect to the surface of the shaft bearing in mind that I am acquired data at a low rotation speed in order to get the "even angle reference" and then I use it to remove the errors in the vibration signal acquired at normal operation. In this application both operations are made in different acquisitions, therefore the reference of the correction signal is lost. Is it simply compensated without synchronizing ?
Our application is based on FPGA and we need to clarity those aspects before implementing the procedure.
Solved!
Go to Solution.

Hi CracKatoA.
Take a look at the link bellow:
http://forums.ni.com/ni/board/message?board.id=170&message.id=255126&requireLogin=False
Regards,
Filipe Silva

Z600 workstation missing pci data acquisition and signal processing controller driver

I just installed Win7 Pro x86 on my Z600 workstation. It was an upgrade from WinXP Pro. In Device Manager I am missing the driver for the PCI Data Acquisition and Signal Processing Controller and Hardlock USB 1.02. Can someone assist me in finding these drivers. I looked on the Support/Drivers page for this model but couldn't find anything.
This question was solved.
View Solution.

Hi,
You might get better assistance on the HP Enterprise Business Forum since you have a professional worktsation.
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
HP Photosmart Premium C309G, HP Photosmart 6520
HP Touchpad, HP Chromebook 11
Custom i7-4770k,Z-87, 8GB, Vertex 3 SSD, Samsung EVO SSD, Corsair HX650,GTX 760
Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT

PCI Data Acquisition and Signal Processing Controller driver

I've installed win 8.1x64 on my HP Probook 450 G2 but I am missing the PCI Data Acquisition and Signal Processing Controller driver.
Can you please help?
Thanks,
Leontina
This question was solved.
View Solution.

Hi:
Please see if installing the Intel Chipset driver installs that device.
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=20775&lang=eng&ProdId=816

Pci data acquisition and signal processing controller -Device software not installed

My pc shows me ,the driver software for pci data acquisition and signal processing controller is not installed on my Device manager.
Please suggest me a suitable solution.

No its not working , Give me an alternate solution.

Lenovo ideapad yoga 13 pci data acqusition and signal processing center for problem for windows 8

Link to picture
hi everyone,
find original w8 cd and then i installed, when i was installing
i deleted all recovery and other partition, i did not think what can i do,
but then i activated windows and installed all driver, but i taking
after all drivers it stayed
2''unknown devices''
and when i rebooted, it says, usb device not recognized'' and also
''pci data acquisition and signal processing center'' devices problem for windows 8. and touchscreen not working.
i read related for w7 same problem, but what i will do now ?
thanks.
Moderator note; picture(s) totalling >50K converted to link(s) Forum Rules

hi adilsefaersan,
Welcome to Lenovo Community Forums!
By opening your Device Manager right click on one unknown device and choose properties,
>On the properties windows Click on the Details Tab, on the property drop down Choose hadware IDs
> then copy the value and post back here whats on the Value pane
Do it for all those unknown Device and Post here the Value of the hardware ids
also can you share your Windows Version and bit type so we'll knwo the correct download page for you
Thanks and Regards
Solid Cruver
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Signal Processing and LabVIEW Expert Full Time Position – London, UK

1x Signal Processing and LabVIEW Expert - Full Time Position – London, UK
1.0      Description:
As a Signal Processing/Software Engineer, you'll be part of a team that is responsible for developing applications based on large high speed data analysis for a large green energy project. Your skills must include a knowledge of Waveform analysis and understand the concepts of cross correlation, Fourier Analysis, Spectral analysis and other similar items.
The position ideally requires someone of CLA level of LabVIEW program to act as the project lead on the programming and technical levels of the system.
2.0      Duties and Responsibilities:
The duties and responsibilities of this position include, but are not limited to, interacting directly with customers to program, train, inform, advise and consult in the design of their applications using the best test and measurement hardware and software by:
◦     Programming memory and speed efficient applications using LabVIEW and Object Oriented Programming and Event-based architectures.
◦     Understanding of the data acquisition side of the system and previous experience using National Instruments hardware and DAQmx
◦     Knowledge of Power engineering, Volts, Amps, current, Power Factor etc.
◦     Providing timely, accurate and effective solutions to technical problems.
◦     Providing guidance on the installation and working functionality of both software and hardware, including explanation of configuration settings.
◦     Reproducing and troubleshooting problems and incompatibilities.
◦     Delivering technical presentations and demonstrations to customers, colleagues and partners.
◦     Ability to project manage and understand how to keep on track with a Microsoft project based externally monitored project.
3.0      Qualifications & Requirements:
◦     Minimum second class higher honours degree in engineering or science related field, such as electronic engineering, physics, mechatronics or computer science.
◦     Basic Knowledge of text based programming languages.
◦     Experience in either LabVIEW, minimum of three years full time and at CLA level, or capability to reach there in a short space of time with the relevant training.
◦     Experience in a second language such as JAVA, C and C++ is strongly preferred.
◦     Have a vast experience of signal processing, both digital and analog.
◦     Although not required, but must have skills to pass the Certified LabVIEW Developer exam and CLA within the year.
◦     Ability to learn new skills/languages/applications quickly (MATLAB, JavaScript, STK, etc.).
◦     Knowledge in instrumentation & control, and industrial automation, is strongly preferred.
◦     Must be able to handle multiple tasks and enjoy working with people.
◦     Strong problem solving skills to analyse the problem and think creatively to provide a solution.
◦     Excellent written, oral and presentation skills are key.
◦     Ability to deal effectively with customers to make them successful is essential.
◦     Ability to get along with others and function as a team player as well as work effectively alone.
◦     A proactive/can do attitude is vital and a positive outlook on problem solving.
◦     Legal right to live and work in the UK. Sponsorship is not available.
◦     Must hold a full valid UK driving license.
4.0      Location:
This role is located in London, UK
5.0      Reporting:
Signal Processing Engineers will report to the Technical Director.
6.0      Salary:
Competitive salary based on level of experience.
7.0      Application:
To apply for this position please send a copy of your CV to
[email protected]
Please state the job title of LabVIEW Signal Processing Engineer in the email subject.

Hi,
I am from india.I can able to complete the projects through the internet itself.
Please let me know if any demos required to show my expertation.

Advenced Signal Processing 7.5 Run Time Engine in LVIEW 8.2 Installer

Hello,
I am trying ot create an installer using LVIEW 8.2 and I need to include the Advanced Signal Processing Toolkit run-time engine but this is not listed in the 'Additional installers'.
I have run and installed the Advanced Signal Processing Toolkit (7.5) and the run time engine on my machine.
How can I include this run time engine in my installer?

The Application Builder of LabVIEW cannot let you select the Advanced Signal Processing Runtime Engine like you select the LabVIEW runtime engine and other driver engines. You have to do it by yourself.
What the Advanced Signal Processing Runtime Engine installer does is to install the DLLs to the system32 folder. So what you need to do is to add the DLLs to your project and configure your installer to install the DLLs to the system32 folder.
See the attachement for more hints.
Attachments:
ASPTRuntime.doc ‏87 KB

Advanced signal processing

is there anyone know how to convert the idwt(inverse discrete wavelet
transform) output in to 2d array?. plz reply its urgent for my final
year project

thank you for your advice...... but iam using an evaluation version from labview and even i downloaded the evaluation version from the advanced signal processing toolkit .. because the evaluation version not including this toolkit .. when i download the toolkit it appears as a winzipped file.. and i dont know how can it work with the software(as in matlab we have to set path to make the toolbox included in matlab).
Regards

Help finding examples of simple signal processing - regressions, etc

Hello All,
I was wondering if anyone has any examples of simple signal processing using the NXT (Labview 7.1 student edition with NXT plugin is what we're using).
This would be for example, reading the distance from a wall with the ultrasonic sensor to see what angle your approaching at, so you can steer based on the result.
Another example would be for passing by an object, reading the high/low point in the signal to determine the center (so you can pick it up).
I'm assuming that the only functions you can use with the NXT are the ones in the NXT subdirectory on the functions palette?
Thanks for any help you can offer.

If you have WiFi at home, all you have to do is have the iPhone look for networks, find yours listed, and tap to connect. Enter password you setup for wireless connections.
For on the road with no WiFi...Edge speeds are better than dial up (with full strength) but because it has a real browser and pulls full web pages and not mobile reduced ones, you may at times think it is slower than the BlackJack only because it is bringing down more.
As for hotel, if the hotel charges, no you cannot bypass it. When you hop on a WiFi spot that does what you described (brings you to their page no matter what you try) it is because they have it setup to do so, until you accept thier terms of service (and pay if need be) it will just keep sending you to it.
Places like Panera Bread offer free wifi, but the first time you try t browse it will show a Accept screen stating they are not responsible for hacks and what not since you are on an open network. You click the checkbox and hit the button, and then you are off and running free as a bird.
Each place is just unique but all are pretty much setup that way (accept screen first). Some hotels show a accept screen and show a price but most times the price is listed at $0.00 and is only there because they paid a 3rd party provider to setup the network and that is out of the box stuff.

2d wavelet signal processing - need some clarification

Hello:
I am using the advanced signal processing toolkit and doing some extensive wavelet processing in both 1-d and 2-d.
In 1-d, when processing waveforms, using discrete wavelet transform-based multiresolution analysis, 2 "coefficients" are produced depending on the "level" chosen. These coefficients are known as the "approximation" and the "detail." The approximation at level 1 is the summation of the approximation and detail at level 2. The approximation at level 2 is the summation of the approximation and detail at level 3. And so forth. See fig. 4-5 on p.4-6 of the Wavelet Analysis Tools user manual.
I want to consider the same analogy in the 2-d case. In the wavelet transform of 2d images at any particular level, 4 coefficients are produced. (See the manual, pgs. 4-7 and higher.) These are labeled low_low, low_high, high_low, and high_high. My interpretation of this is that low_low is the equivalent of the "approximation" and the other 3 coefficients comprise the "detail." I thought then by summing the 4 coefficients at one level (egs. level 2) would produce the approximation at the level just above it (level 1). When I test this out, it does not give the expected result.
I wonder if someone who helped produce the toolkit can clarify how one gets the "approximation" and "detail" coeffcients from the 4 produced coefficients and how they relate to the approximation at one level higher.
Thanks,
Don

Let's extend the analogy of the 1-d and 2-d cases further. First, look at the Advanced Signal Processing Express VI entitled "Multiresolution Analysis." In that VI, one can see that the time domain waveform (1-d) is transformed to its power spectrum which is broken into subbands based on the number of levels chosen. The subband closest to the origin of the power spectrum represents the "approximation" and the other subbands are associated with the "details". One can see that there is one approximation level and multiple detail levels associated with the power spectrum subbands regardless of the number of levels chosen. This express VI allows one to choose whatever combination of approximation and details to reconstruct the signal, thus providing a potentially multiple bandpass / bandstop reconstructed signal.
Fast forward to the 2-d case where I would like to do the same thing. The analog to the 1-d power spectrum would be the 2-d spatial fourier transform (see attached). I am devising a similar visualization method to draw the "subbands" on top of the fourier transform as shown by the blue lines and filled rectangles demarcating mouse-selected regions D3 and D1. However, for the 2-d case, the way I see it, there are actually 3 details associated with each level as mentioned in the above post (low_high, high_low, high_high) and 1 approximation (low_low). The questions then are:
1) how does one synthesize the 3 details (low_high, high_low, high_high) into 1 composite detail for a specific level so that the visualization method I propose for the 2-d case is consistent with that shown for the 1-d case in the Multiresolution Analysis Expresss VI? Do we just add the 3 details? When I do this, I get a great composite detail image that combines the details of rows, columns, and diagonals - but still not sure if it is the proper way to combine the 3 details.
2) how does one perform a reconstruction (inverse wavelet transform) with only the selected subbands for the 2-d case? I have attempted some reconstructions using the WA Inverse Undecimated Wavelet Transform, but the inverse transform does not appear to behave correctly without the use of all coefficients (low_low, low_high, high_low, high_high). In the 1-d case in the Express VI, one can see that only the selected subbands can be used to reconstruct the waveform.
Any help regarding these issues is greatly appreciated.
Sincerely,
Don
Message Edited by DonRoth on 05-22-2007 09:58 AM
Attachments:
wavelet deconstruction and reconstruction.png ‏196 KB

LabVIEW 8.5 and building executable (using fxs from Advanced Signal Processing Toolkit)

Hello out there to NI and Gavin:
For for building an executable using LabVIEW 8.5 and functions from the
Advanced Signal Processing toolkit, do we still need to manually copy the
special set of DLLs related to the toolkit use to the target installation, or are these now included
within a build file for automatic installation to the target
installation?
Thanks,
Don

Hi Don,
I imagine that any improvements made to steps required to build an executable using toolkit-specific vi's would be inherent of the toolkit itself. Meaning, I imagine the inconvenience you experienced would be eliminated with the next release of the Advanced Signal Processing Toolkit.
Cheers,
Emilie K. | Applications Engineer

Question about the Signal Processing Toolkit

I am using Measurement Studio with Visual C++ 6. Is it possible to use the
Signal Processing Toolkit in this environment or does LabWindowsCVI have to
be used? Would the toolkit supply a lib/dll that could be linked into a
VC++ project and called directly from the program?
Thanks

You can use the signal processing toolkit libraries in VC++, but the libraries do depend on CVI libraries. The easiest way to create a Visual C++ project that links to the CVI libraries would be to either a.) create the project in CVI then convert it using the Measurement Studio CVI conversion wizard, or b.) create a Visual C++ project that uses the CVI libraries with teh Measurement Studio application wizard.
For more information on the conversion wizard, see the following topic in the Measurement Studio references:
(Measurement Studio for Visual C++ 6)
Visual C++ Help\Tutorials\Getting Started\Measurement Studio for Visual C++ 6.0\Converting LabWindows/CVI Projects to Measurement Studio for Visual C++ Projects
(Measurement Studio for Visual C++ .NET)
Visual C++ Help\Tutorials\Getting Started\Measurement Studio 6.0 for Visual C++ .NET\Working with LabWindows/CVI Projects in Visual C++
- Elton

Sampling frequency effects on convolving waveforms (need feedback from a signal processing GURU)

I have included my code as version 8.5 for those who have not yet upgraded to 8.6. I have also included screenshots so that you can reproduce the results which I have obtained. I hope that some signal processing guru can shed the light on what I discuss below.
This VI convolves the impulse response signal of a simulated servo motor which is essentially a damped sinusoid with the input stimulus that is a step function. The resulting convolved signal should be IDENTICAL to that of the step response of the motor which is RED in the 1st chart display. As you can see the resulting convolution in the 2nd chart has the same frequency structure but the magnitude is INCORRECT. As you can see in the 2 screenshots the magnitudes differ by a factor of 2 & so does the sampling frequency of the waveform. Why the sampling frequency impacts the magnitude is both puzzling & troubling.
Would appreciate any explanations & corrections so that I have confidence in convolving other input waveforms than just the step function.
Solved!
Go to Solution.
Attachments:
convolution.vi ‏55 KB
screenshot1.pdf ‏54 KB
screenshot2.pdf ‏57 KB

Hi tsunami,
Derivative x(t) VI uses the discrete differentiation to compute the derivative. Consider the simple central differentiation,
y[i] = (x[i+1]-x[i]) / (2*dt)
When you double the sampling rate from 500 Hz to 1k Hz, y[i] also doubles, since dt is only 1 ms now. So this means the second input of Convolution VI doubles the amplitude. Thus the output of Convolution VI also doubles.
To eliminate the effect of the sampling rate, you can divide the convolution result by the sampling rate.
Also please check your VI - I think you use "offset" control for both the sine signal generation and step function. I think "offset" should be 0 in this case. And generate step function separately. I am not sure if this is a problem. Please double check it.
After modifying the code, I can get the identical results.
Attachments:
convolution.vi ‏106 KB

Digital Signal Processing

Hi all.
Recently, I've been busy with a project on signal processing. I have no experience in this field so i am clueless about how to do it.
I've been searching the internet about his topic and i keep getting the same results. So i would just like to ask you some questions to clear things out.
I've been able to create a program which records sound and stores the samples in a buffer. I want to analyze this sound and see which frequencies are present in it. I keep getting posts on Fourier analysis, but i don't understand why exactly i need it, or more precisely, what to do with it.
As i understand, the sequence of samples which i've gathered are hard to analyze, and so, i need to convert it to another series with FFT or DFT. I have found a peace of code which takes as an input the series, and spits out an output which i have no clue how to read or what it represents. The code is basically this: http://people.csail.mit.edu/hammond/teaching/hide/fft/fftcode.html
I get two columns of numbers, A's and B's, but i don't know what they are supposed to represent. What do i do with this output to check which frequencies are present in the signal?
I hope someone can guide me to the right direction.
Thanks.

Thanks KlausJJ, my program can now identify frequency magnitudes of a sound. I struggled a bit with the FFT, then i changed the FFT code i had mentioned earlier, and used another one, and it's working fine.
I now have another important question. I want to identify a clap sound. I'm not sure how to do this. I'm not sure if i should use FFT or not. If i want to compare a sound patterns produced by a clap, do i compare the frequencies or simply the clap waveforms. I'm thinking i can compare the frequency magnitudes of the claps for the frequency ranges. What i wanna do is get the 20 highest frequencies of a clap, and see if another sound is a clap by looking at its 15 highest frequencies. If those 15 freq ranges are present in the original clap's 20 highest frequency ranges, then i confirm that it's a clap. Or maybe i should compare the 15 highest and lowest?
Is this method effective? Or is there a better way of comparing patterns?
Thanks.

Advanced signal processing toolkit

Hi
I am using LabView 7.1 on windows xp machine. I need to do wavelet analysis using LabView. However, I am not finding the advanced signal processing toolkit in this version. Can anyone tell me how to locate it? Can I download it from NI website?
Thanks
Pramod

It was and is an extra cost add-on. You cannot download it. Since you have such an old version of LabVIEW, I don't think you can purchase it anymore. You might want to contact your locaal NI Sale Engineer to discuss your options.

Tv signal processing

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