I cant seem to find the continous sound output.vi.

[sherard]

I am trying to help a friend design a labview code that will actually take multiple sound inputs into a DAQ Board and play the sounds through a sound card.  The delima we are having currently is the while loop seems to reset the sound and its makeing the sound sound choppy.  I was reading up on this vi and when I tried to find it, it appears its no longer an NI example.  I would greatly appreciate any help possible.

[Coq_Rouge]

It should be there have you tried the find example function under help in toolbar. Which labview version do you use?

[sherard]

That is exactly where I searched for it.  I can give a list of all the options I get when I do a search for it.  The only one I find is a continous sound input option.  I am pretty sure its basically the inverse of the countinous sound output.  But I am unable to find that one.  I am currently using LabVIEW 8.6.  I also found another option called multiple outputs that plays a sound continous so this might work.  I would still like to compare it to the other one because I am having a problem outputing a sound without hearing the sound pause.

[Coq_Rouge]

strange

You will find some sound examples here ...national Instruments\LabVIEW 8.6\examples\sound2\sound2.llb\

Anyway I post them here

[Jon_S.]

Hello Sherard,

What type of DAQ board are you using?  Are you using the DAQmx API to acquire a sound signal?

[sherard]

USB 6008 DAQ NI Board Click Here for the link to board.  I am not quite sure about the DAQmx API think.  We are using the vi DAQ Assistant to pull the information into LabVIEW.  Another problem about the one we are using to input the sound information for some reason the DAQ board is producing noise.  We already know how to filter out the noise using DSP techniques but if there is a way to prevent this before uploading that would be better.

[Chris_W.]

What sort of noise are you seeing on the signal? What is the range of your signal? One thing that you can do to improve your Signal to Noise ratio is to amplify your signal before the cabling to the 6008. Here is a Developer Zone article that address noise considerations for wiring. Also, what do you mean, "uploading?"

What are you using to acquire this sound signal? Is it possible that it is microphone that is picking up environmental noise?

Chris

[Mitchell543]

I am actually the friend that Sherard is talking about. I do believe that it is environmental noise. What I am trying to do is use the USB 6008 DAQ board to take in six signal using this VI http://cnx.org/content/m12565/latest/ . The problem I am running into is how to interface this with using a DAQ board. Any help would be appreciated

[Chris_W.]

Inside the Simulate Signal block diagram, you could essentially replace the LabVIEW Simulate Signals Express VI with a DAQ Assistant Express VI. You would have to make sure that the proper frequency and phase are input to the Express VI. It shouldn't be too tough. Once you replace those, the main VI you're using should be able to work with those, now real, signals.

Chris

[Mitchell543]

Yes I have tried to change the connections but I am not sure how to interface the DAQ input instead of the simulated as to where everything will connect. I really appreciate any assistance you can provide. I know how to get my input from the DAQ board but I am running into issues of compatibility .

I have tried adding my DAQ module and things don't seem to match up.The inputs to the simulated signals are Offset,Frequency,Amplitude,Phase,error in, The outputs for the simulated signals are sine and error out. The DaQ Assistant inputs are error in Invalid Input,Invalid Input, number of samples,rate,stop(T),timeout(s). The outputs on the DAQ Assist are data,error out and task out. I am just wondering how to connect it so it works properly.Thanks in advance for any help you can provide.