LECTURE 10: ACOUSTIC TRANSDUCERS

• Objectives:
  
  
  • Introduce the basic types of microphones
    
    
  • Understand microphone impedance and other physical parameters
    
    
  • Learn how these influence the speech signal
    
    
  • Introduce the concept of adaptive filtering to improve signal quality
    
    
  • Introduce advanced technology such as microphone arrays

This material follows the course textbook closely:

X. Huang, A. Acero, and H.W. Hon, Spoken Language Processing - A Guide to Theory, Algorithm, and System Development, Prentice Hall, Upper Saddle River, New Jersey, USA, ISBN: 0-13-022616-5, 2001.

This textbook contains an excellent discussion of these topics. Another good reference source for this material is:

G.S.K. Wong and T.F.W. Embleton (Eds.), AIP Handbook of Condensor Microphones: Theory, Calibration, and Measurements, American Institute of Physics, New York, New York, USA, ISBN: 1-56396-284-5, 1995.

This is one of the definitive publications on condensor microphones.