Sound bar project

[maria4]

Hi all,

I am a third year student in management industry and I need to make an easy project that receives sound through the microphone and above a certain volume flashes or alternatively makes a beep. Although I have done many experiments in LabVIEW I couldn't build the program. Can somebody please help me?

Thank you!

[billko]

Could you let us see what you have so far?  Don't be shy - we're all here to help.  🙂

[maria4]

Bill helo,

here is what i got so far: (sound aquisition)

the problem is that i don't know what should be the condition because the mic is very sensitive (even if i whisper the amplitude is very high).

Thanks!

[billko]

I am not familiar with the sound VIs, but I can't see anything wrong with this.  What are you having problems with?

[johnsold]

The Sound Input VIs do not offer any means of adjusting the signal level. You may be able to adjust that through the OS Sound Input controls.  I can do that on the Mac.

Otherwise you may need to move the microphone farther away from the source.

Lynn

[maria4]

ok....

anybody have an idea for a simpler project involves only mic?

Thanks!

[billko]

It doesn't get any simpler than what you have.  🙂

[apok]

cant you just get the waveform components and pull out the amplitude(Y) of the signal and do a comparison to what higher level you want?

[maria4]

Yes I know

But this project doesn't do nothing.

We need to build an easy project and we didn't learn this program so it's very difficult for me.

[maria4]

I'm sorry i didn't understand you