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Audio Engineering Society

Chicago Section

Meeting Recap - March 21, 2012

AES Chicago Section Meeting Notice

TOPIC: Directivity and Matched Microphones

PRESENTER: Daniel Warren

DATE: Wednesday, March 21, 2012

LOCATION: Shure Incorporated, 5800 W. Touhy Ave, Niles, IL 60714


This talk discusses the basics of microphone directivity, particularly using two closely spaced microphones.  We will show why the microphones in these small directional systems must be very closely matched in sensitivity across the frequency band for good directional performance, and how we pull this off even though the matching tolerances are approaching the limits of our ability to measure the microphones.


Daniel Warren has been the Director of Research for Knowles Electronics since 2002.  He has a Ph.D. in Physics from the University of Mississippi and has studied, modeled, and designed all types of transducers for almost 25 years.  He is a former Chair of the Engineering Acoustics Technical Committee of the Acoustical Society of America and sits on two ANSI Standards working groups for hearing aid and real-ear measurements.