Multiple sound source localization using gammatone auditory filtering and direct sound componence detection

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Chen, Huaiyu^1 ; Cao, Li^1

Department of Automation, Tsinghua University, Beijing

100084, China^1

关键词: Auditory filtering;    Average absolute error;    Different frequency;    Frequency components;    Processing algorithms;    Real-room reverberation;    Room reverberations;    Sound source localization;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012102/pdf
DOI  :  10.1088/1755-1315/69/1/012102

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to research multiple sound source localization with room reverberation and background noise, we analyze the shortcomings of traditional broadband MUSIC and ordinary auditory filtering based broadband MUSIC method, then a new broadband MUSIC algorithm with gammatone auditory filtering of frequency component selection control and detection of ascending segment of direct sound componence is proposed. The proposed algorithm controls frequency component within the interested frequency band in multichannel bandpass filter stage. Detecting the direct sound componence of the sound source for suppressing room reverberation interference is also proposed, whose merits are fast calculation and avoiding using more complex de-reverberation processing algorithm. Besides, the pseudo-spectrum of different frequency channels is weighted by their maximum amplitude for every speech frame. Through the simulation and real room reverberation environment experiments, the proposed method has good performance. Dynamic multiple sound source localization experimental results indicate that the average absolute error of azimuth estimated by the proposed algorithm is less and the histogram result has higher angle resolution.