Title :
Signal Extraction by Two-stage Space-time Adaptive Noise Cancellation and Beamforming
Author :
Zeng, Qingning ; Ouyang, Shan
Author_Institution :
Coll. of Telecommun. Eng., Xidian Univ., Xi´´an
Abstract :
A two-stage space-time adaptive signal cancellation algorithm cascading with delay-and-sum beamforming is presented in this paper to extract signal corrupted by environmental noises. The scheme is effective to various noises and adaptive to the changes of noises environment and signal source. It also permits locating the sensors in close proximity to make the sensor array very small in size. Experiment results of speech signal extraction from noisy environment have indicated that this scheme has advantages in SNR improvement and speech signal intelligibility
Keywords :
array signal processing; feature extraction; interference suppression; sensor arrays; space-time adaptive processing; speech intelligibility; speech processing; delay-and-sum beamforming; environmental noise cancellation; sensor array; sensor locating; signal source; speech signal extraction; speech signal intelligibility; two-stage space-time adaptive beamforming; Array signal processing; Data mining; Microphones; Noise cancellation; Planar arrays; Sensor arrays; Sensor phenomena and characterization; Sensor systems; Speech; Working environment noise;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284688
