# How one can demonstrate that microphone is a nonlinear device? (Hafiz Malik )

```Subject: How one can demonstrate that microphone is a nonlinear device?
From:    Hafiz Malik  <hafiz.malik@xxxxxxxx>
Date:    Mon, 11 Jun 2012 14:13:33 -0400
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

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Hi Every 1,

Microphone is generally modeled using a second-order nonlinear function,
that is, y(n) = ax(n) + b x(n)^{2} where x(n) is the microphone input.

How can one demonstrate this non-linearity?

Any suggestions/comments/literature in this regard.

Thanks,
--
Hafiz Malik
Assistant Professor
Electrical and Computer Engineering Department,
University of Michigan - Dearborn
Dearborn, MI 48128
RN: 220 ELB
Tel: (313)5935677
Fax: (313)5836336
http://www-personal.engin.umd.umich.edu/~hafiz

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Hi Every 1, <br><br>Microphone is generally modeled using a second-order nonlinear function, that is, y(n) = ax(n) + b x(n)^{2} where x(n) is the microphone input. <br><br>How can one demonstrate this non-linearity?<br><br>
Any suggestions/comments/literature in this regard. <br clear="all"><br>Thanks,<br>-- <br>Hafiz Malik<br>Assistant Professor<br>Electrical and Computer Engineering Department,<br>University of Michigan - Dearborn<br>Dearborn, MI 48128<br>
RN: 220 ELB<br>Tel: (313)5935677<br>Fax: (313)5836336<br><a href="http://www-personal.engin.umd.umich.edu/~hafiz">http://www-personal.engin.umd.umich.edu/~hafiz</a><br>