Modeling dynamic and dual diaphragm microphones An electromagnetic microphone has a construction similar to that of the speaker shown in the given figure, except that there is no applied voltage and the sound waves are incoming rather than outgoing. They exert a force fs on the diaphragm whose mass is m, damping is c, and stiffness is k. Assume the inductance, L, is considered small enough that it can be neglected. Speaker enclosure Magnet Sound N waves Coil Diaphrágm a) Draw a sketch of what you anticipate this type of microphone to look like based on the Figure of the speaker shown. From this sketch, draw the FBD of the microphone, and use this develop the coupled mechanical and electrical Dynamic equations of the microphone, whose input is fs and output is the current /in the coil. I(s) F,(s) b) Use the coupled mechanical and electrical dynamic equations to find the transfer function: The passive diaphragm can be added to the model as a massless spring/damper located between the input and the microphone mass. The force input in the original model is replaced with the force generated from a displacement input, ys, on the passive diaphragm. C) Draw a sketch of what you anticipate this type of microphone to look like and draw the FBD of this microphone, and use this to develop the coupled mechanical and electrical Dynamic equations. I(s) d) Use the coupled mechanical and electrical dynamic equations to find the transfer function: Y,(s)

Modeling dynamic and dual diaphragm microphones An electromagnetic microphone has a construction similar to that of the speaker shown in the given figure, except that there is no applied voltage and the sound waves are incoming rather than outgoing. They exert a force fs on the diaphragm whose mass is m, damping is c, and stiffness is k. Assume the inductance, L, is considered small enough that it can be neglected. Speaker enclosure Magnet Sound N waves Coil Diaphrágm a) Draw a sketch of what you anticipate this type of microphone to look like based on the Figure of the speaker shown. From this sketch, draw the FBD of the microphone, and use this develop the coupled mechanical and electrical Dynamic equations of the microphone, whose input is fs and output is the current /in the coil. I(s) F,(s) b) Use the coupled mechanical and electrical dynamic equations to find the transfer function: The passive diaphragm can be added to the model as a massless spring/damper located between the input and the microphone mass. The force input in the original model is replaced with the force generated from a displacement input, ys, on the passive diaphragm. C) Draw a sketch of what you anticipate this type of microphone to look like and draw the FBD of this microphone, and use this to develop the coupled mechanical and electrical Dynamic equations. I(s) d) Use the coupled mechanical and electrical dynamic equations to find the transfer function: Y,(s)