Any suggestions on how to measure the Vibration of an acoustic guitar?

[DerickP]

Not sure if I am posting in the correct area, but I need help finding a tool that can measure the wood vibration of an acoustic guitar. Is there anyone who may be able to help me. I appreciate any feedback or info. Thank you!

Derick

[JKarma]

Hello DerickP:

As far as I understand you would like to know how to capture data with regard to sound analysis application. Well, there are different ways to do it and depend on the type of analysis and the control that you in the acquisition itself. The first idea that comes to my mind is the Sound and Vibration Toolkit, this is not included by default with LabVIEW, one of the most useful features is the post-acquisition analysis (e.g Order Analysis). Here is the Getting Started Manual.

In case you just need to acquire the signal and the analysis procedure is not required on the tool itself, we can also take into consideration working with DAQmx driver and the DAQmx API. 

It is important to mention that the sensor and the sensibility of the microphone, e.g, need to be according to the needs of acquisition and the type of analysis you would like to develop on the guitar.

[Lysandros]

I agree with JKarma and would like to add, that you basically need to capture the sound or the vibration with a microphone or acceleration sensor respectively. You will need an analog input module for this.

Guitars produce frequencies in the range of 20-20kHz, so depending on what tones you want to capture, you have to select the appropriate sampling frequency (aliasing effect).

Labview offers the option for a real-time FFT, in order to visualize the frequency contents of small packages of sound/vibration acquired at a time. Alternatively, you can acquired the data and calculate the frequency spectrum offline, for example with Matlab.

Best regards

Lysandros