Want to measure sound and display in graph

[bhattnbikes]

Hi guys,

   I wish to measure sound that different equipments make and at the frequencies they make  the sound. I am using a micro-phone connected to A/D board. I think the harware i m using is correct. But can someone tell m which vi shall i use to make my program work ?

[mikeporter]

Start with the examples that ship with LV. There will be several that will do what yo want--or reasonably close. Check the examples for signal analysis and DAQ.

Mike...

[bhattnbikes]

Hi Mike

 Thanks for your reply. What you said works but i was expecting some other results. I want to measure the sound from a micro-phone and see the sound output in the graph at various frequencies, Using DAQ i get voltage output from the A/D board and i m not sure how can i display it in terms of frequency.  Is there any function which directly reads data from microphone and displays in graph ?

Bhattnbikes

[mikeporter]

Yes;

Go back to the examples and look up signal analysis or FFT. There will be examples showing spectral analysis, combine that functionality with the DAQ you have now and you're done.

Mike...

[the German guy]

Hi mike,

I found some older messages from a guy also called mike. In the older messages there was a discussion on sound pressure levels, weighting and octave analysis.

Are you that guy? Because I tried to mail him but  couldn't reach his e-mail address.

[mikeporter]

Sorry, don't think so...

Mike...