On a Method for Improving Impulsive Sounds Localization in Hearing Defenders

This paper proposes a new algorithm for a directional aid with hearing defenders. Users of existing hearing defenders experience distorted information, or in worst cases, directional information may not be perceived at all. The users of these hearing defenders may therefore be exposed to serious safety risks. The proposed algorithm improves the directional information for the users of hearing defenders by enhancing impulsive sounds using interaural level difference (ILD). This ILD enhancement is achieved by incorporating a new gain function. Illustrative examples and performance measures are presented to highlight the promising results. By improving the directional information for active hearing defenders, the new method is found to serve as an advanced directional aid.

[1]  E. Owens,et al.  An Introduction to the Psychology of Hearing , 1997 .

[2]  Douglas S. Brungart,et al.  The effect of microphone placement on localization accuracy with electronic pass-through earplugs , 2003, 2003 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (IEEE Cat. No.03TH8684).

[3]  Gregory H. Wakefield,et al.  Introduction to Head-Related Transfer Functions (HRTFs): Representations of HRTFs in Time, Frequency, and Space , 2001 .

[4]  Durand R. Begault,et al.  3-D Sound for Virtual Reality and Multimedia Cambridge , 1994 .

[5]  Mark B. Sandler,et al.  A tutorial on onset detection in music signals , 2005, IEEE Transactions on Speech and Audio Processing.

[6]  Lee D Hager,et al.  Hearing protection. Didn't hear it coming ... noise and hearing in industrial accidents. , 2002, Occupational health & safety.

[7]  Ben Supper,et al.  An auditory onset detection algorithm for improved automatic source localization , 2006, IEEE Transactions on Audio, Speech, and Language Processing.

[8]  Richard L. McKinley,et al.  The Impact of Hearing Protection on Sound Localization and Orienting Behavior , 2005, Hum. Factors.

[9]  Richard O. Duda,et al.  Modeling head related transfer functions , 1993, Proceedings of 27th Asilomar Conference on Signals, Systems and Computers.

[10]  S. Hyakin,et al.  Neural Networks: A Comprehensive Foundation , 1994 .

[11]  M B Gardner,et al.  Historical background of the Haas and-or precedence effect. , 1968, The Journal of the Acoustical Society of America.