Microphone Array Source Localization Using Realizable Delay Vectors
workshop on applications of signal processing to audio and acoustics(2001)
摘要
This paper presents an alternative approach to acoustic source localization which modifies the traditional two-step localization procedure to not require explicit time-delay estimates. Instead, the cross-correlation functions derived from various microphone pairs are simultaneously maximized over a set of potential delay combinations consistent with candidate source locations. The result is a procedure that combines the advantages offered by the PHAT weighting (or any reasonable cross-correlation-type function) and a more robust localization procedure without dramatically increasing computational load. Simulations are performed across a range of reverberation conditions to illustrate the utility of the proposed method relative to conventional GCC filtering approaches and a more modem eigenvalue-based technique.
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关键词
acoustic signal processing,acoustic transducer arrays,array signal processing,correlation methods,delays,microphones,reverberation,transforms,GCC filtering,PHAT weighting,acoustic source localization,computational load,cross-correlation functions,delay combinations,eigenvalue-based technique,generalized cross-correlation,microphone array source localization,microphone pairs,phase transform,realizable delay vectors,reverberation conditions,simulations,two-step localization
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