Scanned-array audio beamforming using 2nd- and 3 rd-order 2D IIR beam filters on FPGA Conference

Ganganath, N, Attanayake, G, Bandara, TY et al. (2010). Scanned-array audio beamforming using 2nd- and 3 rd-order 2D IIR beam filters on FPGA . 451-454. 10.1109/ICM.2010.5696186

cited authors

  • Ganganath, N; Attanayake, G; Bandara, TY; Ilangakoon, P; Rodrigo, R; Madanayake, A; Bruton, LT

authors

abstract

  • Real-time scanned-array direct-form-I hardware implementations of two-dimensional (2D) infinite impulse response (IIR) frequency-planar beam plane-wave (PW) filters have potentially wide applications in the directional enhancement of spatio-temporal broadband PWs based on their directions of arrival (DOAs). The proposed prototypes consist of a microphone sensor array, low-noise-amplifiers (LNAs), multiplexers (MUXs), a programmable gain amplifier (PGA), an analog to digital converter (ADC), a digital to analog converter (DAC), and a field programmable gate array (FPGA) circuit based 2D IIR spatio-temporal beam filter implemented on a single Xilinx Virtex2P xc2vp30-7ff896 FPGA chip. Starting from published 1st-order designs, novel FPGA architectures for highly-selective 2nd- and 3 rd-order beam PW filters are proposed, simulated, implemented on FPGA, and verified on-chip. © 2009 IEEE.

publication date

  • December 1, 2010

Digital Object Identifier (DOI)

start page

  • 451

end page

  • 454