Ward, Darren BAbhayapala, Thushara2015-12-132015-12-13May 12 2000780374037http://hdl.handle.net/1885/74969A major problem in sound field reconstruction systems is how to record the higher order (> 1) harmonic components of a given sound field. Spherical harmonics analysis is used to establish theory and design of a higher order recording system, which comprises an array of small microphones arranged in a spherical configuration and associated signal processing. This result has implications to the advancement of future sound field reconstruction systems. An example of a third order system for operation over a 10:1 frequency range of 340 Hz to 3.4 kHz is given.Keywords: Legendre function; Spherical microphone array; Acoustic arrays; Acoustic signal processing; Audio systems; Loudspeakers; Sound recording; Three dimensional; Two dimensional; Vectors; Microphones20022015-12-11