Thursday, January 12, 2006

Microphone evaluation

We attached the piezo buzzer, the Shadow guitar pickup and the piezoelectric film on a window and recorded their response to evaluate their quality.
After the recordings we performed a Fourier spectrum analysis of the sound-data.

Piezo-film analysis:

Piezo-buzzer analysis:

The comparisson shows a better response of the piezo-film, especially in the mid-range frequencies. Second came the guitar with the buzzer last, as expected.

Another factor that we evaluated was the unwanted noise levels picked up by the mics. Again, the piezo-film showed the lowest noise levels compared to the other two.


At 2:21 pm, Anonymous Anonymous said...

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At 4:58 am, Blogger Hola Blog said...

I consider this is an excellent project and I would like to know if you have some plans to produce it, because... i want one. Is an awesome gadget for experience something we may┬┤ve never imagine.

At 7:55 am, Blogger tom said...

i'm the same would love one of these??????


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