Need some urgent help related to this Arduino Audio processing

Question

I am following this link from instructable site..

http://www.instructables.com/id/Arduino-Audio-Input/

My question is,

Instead of using the Microphone Radioshack 33-3038, which is listed in the tutorial , can I use https://www.sparkfun.com/products/9964,

KIndly suggest is there any modifications required in other parts for the circuitary If I go for Electret Microphone .

jw0752 · Answer

Hi Raviraz,

Yes there is a difference between the two microphones. The 33-3038 is a dynamic microphone which means that it is a coil of wire in a magnetic field. Sound waves vibrate the diaphragm and this moves the coil in the magnetic field and produces the electric signal. The Spark Fun microphone is an Electret condensor mic and it uses a different system involving a charged metal plate and a capacitive effect to convert the sound into an electric signal. The Electret also has a built in FET amplifier to amplify the electric signal to a usable level. I am sure that the Sparkfun mic will work but you will have to provide power to it from your board as it is has three wires Ground, Signal, and Power, whereas the Radio Shack Mic has only two wire Ground and Signal. Sparkfun usually has good documentation and they will likely include instruction to make the mic work with your project.

John

Need some urgent help related to this Arduino Audio processing

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