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A soft-processor-based FPGA implementation of a microphone array direction-of-arrival estimator
International Conference on Advanced Technologies for Communications Số , năm 2013 (Tập , trang 667-670)
ISSN: 21621039
ISSN: 21621039
DOI: 10.1109/ATC.2013.6698198
Tài liệu thuộc danh mục: Scopus
Conference Paper
English
Từ khóa: Cross-correlation coefficient; Direction-of-arrival estimators; Directionof-arrival (DOA); FPGA implementations; Microphone arrays; Reverberant environment; Secure digital memory card; Signal processing systems; Acoustic generators; Algorithms; Field programmable gate arrays (FPGA); Microphones; Signal processing; Direction of arrival
Tóm tắt tiếng anh
This paper presents the implementation of a digital system to estimate the direction-of-arrival (DOA) of a sound source signal using the multichannel cross-correlation coefficient (MCCC) method. The implementation is based on a Nios� II soft processor incorporated in a four-microphone-channel signal processing system on a field-programmable gate array (FPGA). The MCCC algorithm is coded in C and executes on the Nios� II soft processor on an Altera� Cyclone� II FPGA. The performance of the soft-processor-based FPGA implementation of the MCCC algorithm is investigated by applying simulated microphone input signals from a pre-recorded sound source stored on a secure digital (SD) memory card. The results for noisy and reverberant environments are in good agreement with simulations and they confirm that the DOA estimation robustness is suitable for practical applications. � 2013 IEEE.
