i want to test my microphone using labview vi

[mpshridhar]

Hello SIr,

I want to check my microphone using labview program, using labview vi i want to get dynamic vibrations of sound when we will give input to our head phone(In this we are having our microphone). From this while on speaking using our head phone, its possible for me to get the frequency of my sound.I m having labview 5.1 version. If you have any simple code for this problem, Please send me.

Kindly regards

Shridhar

[smercurio_fc]

LabVIEW 5.1 is extremely old, so new code will be hard to come by since very few people will even have it. I know I no longer have it. You should start by looking at the examples that ship with LabVIEW. There should be several examples related to sound. The first thing you need to do is to capture the sound. To do this you will need to use the sound functions to read from your sound card. Get this part done first. Once you have the signal you can use the signal processing functions to analyzer the signal. Again, there should be examples that ship with LabVIEW. You should also perform a search on the NI site as it's likely there have been examples posted over the years.

Message Edited by smercurio_fc on 08-23-2009 04:28 PM

[Vaibhav_Vashisht]

Hi mpshridhar,

Yes, LabVIEW 5.1 is too old a release, so I'm in a fix too. However in LabVIEW 8.6 (and other newer versions) there's an Express VI that will help you acquire signals from your microphone.

Here's an image of the VI and the pop-up that will help you acquire the signal.

Regards,

Vaibhav.

[mpshridhar]

Thank you vaibhav sir and smercurio_fc sir  For your reply,

But my requirement is vi which should be in 5.1 or any higher version till 7.6, and plz try to send those vi's in jpg format, I will try to implement in my 5.1 version.

vaibhav sir's jpg is in 8.6 version, in that we are having only front panel diagram, i need block diagram also.

With kind regards 

Shridhar

[smercurio_fc]

It would not be possible to do that. The VI shown is an Express VI, which is something that doesn't exist in 5.1. Besides, many of the sound VIs use DLLs. Can't send you JPEGs of those. Have you searched the examples that come with LabVIEW? I know there are sound examples in there. Have you searched the forum? Have you searched the Knowledge Base?

[mpshridhar]

Thank you Sir,

I searched in ni.com and also in my 5.1 examples, I got one vi using that I m not able to get frequency curve,  they have mentioned power graph and time graph. So its not useful for me. If I run that program its not taking input from my microphone, No output signal only. Its OK if u find any vi then post it, till then I will also try to use vi which is available in my labview examples. I found only example for sound inputs happy thing is its possible to give sound input in my labview 5.1 version. 

with regards,

Shridhar