acquire sound waveform 2 channels

[nomade42k]

Hello guys!!

I would like to plot the waveform from a sound of my sound card (using the microphone).  Well, with the "acquire sound" icon from the Express menu I could make it.  But I have a trouble when I want to store as a binary data.  If a set the "acquire sound" icon in 1 channel, I have not problem to store and plot then, but when I set the "acquire sound" icon in 2 channels, I can to plot the binary data.  I attach a picture with the vi

Can someone help me please?

thanks

[Cory_K]

How are you running your VI? Are you using the 'Run Continuously' button?

[nomade42k]

No,  I am just running my vi with "run" button

by the way, I am a phisicyst from the Universidad de Santiago de Chile (USACH)

thanks

[Cory_K]

I wouldnt recommend the Express VI.

You just need to do something like this:

Only the Read needs to be in a loop.

Remember to put a wait in the loop.

The data output is an array of waveforms, so you can write to a file if you want.

[Cory_K]

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nomade42k wrote:

by the way, I am a phisicyst from the Universidad de Santiago de Chile (USACH)

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Thats cool! MSU's physics department collaborates with some physicists in Chile with the SOAR telescope

[nomade42k]

Sorry, but it is not the problem.  I only have been using the "acquire sound" cause I need to simulate severals channel and then can to store in a unique binary file with two columns.

[Cory_K]

Are you having a hard time with the graphing or the writing to a file?

[Coq_Rouge]

I think you should modify the "Sound Input Read VI" as shown in the picture. Remember to save it some place else than the vi.lib dir

[nomade42k]

Sorry guys, maybe I made the wrong question.  I just used the "acquire sound" to simulate several signals.

What do you think about this solution???

[Coq_Rouge · Accepted solution]

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nomade42k wrote:
Sorry guys, maybe I made the wrong question.  I just used the "acquire sound" to simulate several signals.

What do you think about this solution???

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Very close to ending up here

http://forums.ni.com/ni/board/message?board.id=BreakPoint&thread.id=2634&view=by_date_descending&pag...

try to understand this

Do NOT use Express VIs. Using Express VIs is like peeing in your pants a cold winter day. You may get warmer for a few minutes. But after that it will be very cold.