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how to import and export audio with multisim?

Hi, I'm looking for some help here that would be incredibly appreciated. I have Multisim 10.1 as well as the student version of Labview 2009. I have both of these from the electronics courses I'm taking in college. I'd really like to make these programs useful in real life applications, however. My real passion is guitar and working with effects and amplifiers. I'm just learning to build my own effects pedals.

 

So is it possible to record a guitar's audio signal to my computer, export it into multisim, and have that signal processed through a multisim built circuit and exported as actual audio (as well as maybe have the processed input and output signals viewed graphically)? I want to be able to run the signal through and edit-able circuit so that I can learn how different components affect audio signals and how to be able to begin building my own.

 

For anyone who can help, thank you very much in advance!

 

edit: I did find this as some starting info! :

 

Message 1 of 6
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Hi,

 

The circuit below will do what you are describing, it will record any audio signal through the microphone and the signal will be as an input to a circuit and then circuit output can be heard on your computer speaker.  The challenge with this setup is that the simulation time can be very long when compare to real time.  In this setup, you are recording and then playing only 1 second worth of data and this setup will take several minutes to simulate. If you are playing a song with your guitar, Multisim will take a very long time to acquire/simulate/output the result.

 

 

Tien P.

National Instruments
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Message 2 of 6
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Hi,

 

On the first line I posted earlier when I say the "Circuit Below" what I meant to say the circuit you posted.

Tien P.

National Instruments
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Message 3 of 6
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Thank you very much Tien. Are you saying that the playback will be essentially slowed down compared to my recorded signal? Or are you saying that there will simply be a lag time between recording and playback? If it is simply lag, that is ok. It does not be a full song, I simply want to record a short signal that I can then pass through the circuit and analyze for later usage (and be able to play back the processed signal).

 

I tried running the set up as shown in the circuit I posted, but it did not work. I was getting extreme static and my recorded signal was hardly audible. Do you know why this might be?

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Message 4 of 6
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The simulation speed depends on your computer hardward and your circuit, the larger the circuit, the longer the simulator takes to calculate the equations.  There is no relationship between the real time and simulation time.  You could aquire 5 seconds of data but the simulator can to 20 minutes analyze the data. 

 

The microphone and speaker VI was created to demonstrate the intregration between Multisim and LabVIEW, aquiring and producing quality signal was not the main concern, you should be able to hear what you record but the quality will be poor.

Tien P.

National Instruments
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Message 5 of 6
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Would I have any better luck recording the file in a separate program as a .wav and then importing it into multisim?

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Message 6 of 6
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