Re: Directional microphone (Les Niles )

Subject: Re: Directional microphone
From:    Les Niles  <niles(at)PARC.XEROX.COM>
Date:    Mon, 29 Apr 1996 16:08:05 PDT

> Is it possible to simulate the effect of a highly directional >microphone using an array of two or more omni-directional microphones ? I >suspect that this could be done by using a simple time-delay filter,but I >am not sure how... > > Any ideas or pointers ? Yes, it is. See, for example, P.L. Chu, "Desktop Mic Array for Teleconferencing," Proc. ICASSP-95, Vol. 5, pp. 2999-3002, 1995, M.S. Brandstein, J.E. Adcock, and H.F. Silverman, "A Closed-Form Method for Finding Source Locations from Microphone-Array Time-Delay Estimates," Proc. ICASSP-95, Vol. 5, pp. 3019-3022, 1995, and references cited therein. -les niles(at)

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Electrical Engineering Dept., Columbia University