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An Enhanced Binaural 3D Sound Localization Algorithm

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2 Author(s)
Keyrouz, F. ; Technische Univ. Munchen, Munich ; Diepold, K.

For sound localization methods to be useful in real-time scenarios, the processing power requirements must be low enough to allow real time processing of audio inputs. We propose a new binaural sound source localization technique based on using only two microphones placed inside the ear canal of a robot dummy head. The head is equipped with artificial ears and is mounted on a torso. In contrast to existing 3D sound source localization methods using microphone arrays, our novel method employs two microphone and is based on a simple correlation approach using a generic set of head related transfer functions (HRTFs). The proposed method is demonstrated through simulation and is further tested in a household environment. This set up proves to be very noise-tolerant and is able to localize sound sources in free space with high precision and low computational complexity

Published in:

Signal Processing and Information Technology, 2006 IEEE International Symposium on

Date of Conference:

Aug. 2006