Title :
Theory and design of high order sound field microphones using spherical microphone array
Author :
Abhayapala, Thushara D. ; Ward, Darren B.
Author_Institution :
Department of Engineering, FEIT & Department of Telecom Eng, RSISE The Australian National University, Australia
Abstract :
A 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 :
Artificial neural networks; Integrated circuits; World Wide Web;
Conference_Titel :
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-7402-9
DOI :
10.1109/ICASSP.2002.5745011
