Unformatted text preview: 3 . Estimate the associated sound peak pressure. 2.3. A sound source in the body emits plane waves and is embedded in “tissue” with a specific acoustic impedance, Rayls cgs Z SA 5 10 5 2 × = . . For air at 25 ºC, the Rayls cgs Z SA 9 40 . = . Calculate the fraction of sound energy transmitted to the air. What happens to the sound wave energy at the skin that is not transmitted to the air? 2.4. The output of an electric capacitor microphone is conditioned by an ideal Op-Amp current-to-voltage converter as shown below. Note that m o F = -I V Y and V ac oc P Qk ε = . a) Give and expression for ( ) m j ω I . b) Find the system’s frequency response function ( ) ( ) o ac j j V P c) Sketch and Dimension the frequency response of the system. Cx IOA Cf Gf Voc Y f Vo Equivalent Circuit of Electrec Microphone Im...
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This note was uploaded on 10/01/2009 for the course CHEM 334 taught by Professor Lei during the Spring '09 term at UConn.
- Spring '09