Labview projects in music and sound engineering

[sanctusinfernum]

Hi,

    this is my first post in the forum. I'm in the final year of my electronics and instrumentation engineering course and I have to take up a project relating to my field (electronics, embedded systems, signals & systems and digital signal processing are some of my subjects). Being a musician and a sound engineering enthusiast, I want to take up a project which combines my passion with my area of study.

    I would be really grateful if someone can guide me to choose a project of the above description in which LabVIEW can be used. I was thinking on the lines of non linear audio effects but I'm open to ideas.

[Norbert_B]

Are you looking for something like this?

Norbert

[sanctusinfernum]

Thanks for the quick reply. That's a very interesting video but a simple looper can do what he did in the video. I'm not sure what exactly he did. I'll try contacting Vineet from the video. I'm not really sure what LabVIEW can do in my case as i mentioned in the first post. I have to implement the project in 6 months' time, if that helps.

[Coq_Rouge]

Just a warning for your project. The system showed in this demo is quite expensive. Ni like to do fancy demos. But they often forget to say anything of the total system cost in the demonstration. If you plan to do a low cost variant and use a sound card. You should know that the Labview sound card interface is very primitive. And full of bugs. And since NI neglect this interface bugs are not taken care of. If you are not aware of this limitations your project may end in disaster. Like if you plan to do synchronized sound input/output and some low latency "real time" signal processing. Just forget it before even thinking about it. To be honest. Blame the flimsy NI sound card interface, alone for this. Is not fair. As Windows is far from a real time OS. And real time operations require real time systems. If you limit your project to do post sound processing and use large chunks of data. Say you update data to sound card in .5 seconds intervals. It may work.  

Good luck with your project    

[sanctusinfernum]

That was my exact concern. Now that you've mentioned it, i'll have think of something else. Any suggestions from your side?

[systemcrash]

Well, I didnt see the video but would like to add something about LabVIEW sound.

You can do a simple Play and Record Project, Play the sound from the external device capture the sound data,

with this you can calculate the microphone latency, compensate this latency factor while recording the data,

adjust the gain of the system,

Play 1 record many,

Mono and Stereo type of recording.

Save the recorded data in diff sound formats, analyse the behavior of each sound format etc etc

Hope you like this idea

[Coq_Rouge]

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@Norbert B wrote:

Are you looking for something like this?

Norbert

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I am somewhat curious about the hardware cost in this video demonstration Norbert, do you have any estimate? You may use $ or Euro.

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@sanctusinfernum wrote:

That was my exact concern. Now that you've mentioned it, i'll have think of something else. Any suggestions from your side?

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Off the top of my head I have no ideas. But I could help in deciding what can done, or not done. At least regarding sound processing using Labview and sound card. Work close with your teacher and be careful to not select a to ambitious project. If you sense your teacher is skeptic a difficult project he/she is most probably correct.  

[viScience]

Here is the motherload....

http://cnx.org/content/m15510/latest/

[sanctusinfernum]

Wow! That link contains almost everything I would need. Thanks a ton! I wish I could do something for you in return. Thanks again!

[Coq_Rouge]

I hope I was not misinterpreted. Because you can do a lot of cool post processing of the data in Labview using sound card as output. Given that you use appropriate chunks of data around 0.5 second. What you can not do is any sort of real time or tight simultan synchronized sound IO. Like you can not hook up your electrical guitar via an amplifier to your sound card. And do a online reverb. Unless you can accept a 0.5 second sound letency