Performance comparison between conventional direction-of-arrival algorithm and stereausis network based on cochlea model

Yaoliang Zhang; Li Yin; Wei Liu

doi:10.1117/12.832863

30 October 2009 Performance comparison between conventional direction-of-arrival algorithm and stereausis network based on cochlea model

Yaoliang Zhang, Li Yin, Wei Liu

Author Affiliations +

Proceedings Volume 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis; 74951P (2009) https://doi.org/10.1117/12.832863
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China

Abstract

In this paper, we present experimental results comparing the conventional direction-of-arrival (DOA) algorithm and the stereausis network algorithm for the purpose of performing acoustic DOA estimation. The comparison would be focused on robustness, complexity and aperture size. Robustness is important because the acoustic signatures can vary significantly under different environmental conditions. Low complexity is also important because the DOA algorithm will be used in real time and systems need to identify a target instantly. Aperture size is another important issue in target positioning because fewer sensors could lead to small size and be located more freely. We show the DOA results of different algorithms on a simulated signal with given SNRs (Signal to Noise Ratio) and discuss issues such as robustness with respect to noise, computational complexity, and aperture sizes. The stereausis network algorithm could perform well under low SNR environment. When the SNR is above -5db, the accuracy is almost not affected. The complexity of computation of stereausis algorithm is much smaller than temporal delay algorithm because of the absence of neural delays, which means it has no time delay units. Therefore, stereausis algorithm could resolve the direction with less time cost compared to conventional time-delay methods so that it exhibits high real time feature. In addition, conventional algorithms usually require complex sensors array, which means the aperture size can't be small, while the stereausis algorithm could be implemented through only two sensors, which means a smaller aperture size.

Citation Download Citation

Yaoliang Zhang, Li Yin, and Wei Liu "Performance comparison between conventional direction-of-arrival algorithm and stereausis network based on cochlea model", Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 74951P (30 October 2009); https://doi.org/10.1117/12.832863

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KEYWORDS

Detection and tracking algorithms

Signal to noise ratio

Sensors

Computer simulations

Phase shifts

Acoustics

Target detection

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