A Microphone Array System for Speech Recognition
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97) -Volume 1 - Volume 1
Microphone Array Based Speech Recognition with Different Talker-Array Positions
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97) -Volume 1 - Volume 1
Acoustic source location in noisy and reverberant environment using CSP analysis
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 02
Robot auditory system using head-mounted square microphone array
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
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For hands-free communication system, this paper describes a noise reduction method using a two-channel microphone. Recently, the Complex Spectrum Circle Centroid (CSCC) method has been proposed. This method utilizes geometric information and estimates the spectrum of the target signal. The method is advantageous in that no adjustment of the array-processing parameters to the environment is necessary before its operation and it is effective with non-stationary noise. However, the original CSCC method requires at least three microphones to estimate the spectrum of the target signal (center of circle). In this paper, we propose a method which estimates the spectrum of the target signal using only two microphones. In experimental results, the proposed method achieves the performance as good as the original CSCC method and can restore the target signal almost completely in a simulated noisy environment.