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A Sound Localizer Robust to Reverberation

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This paper proposes an intelligent acoustic sensor able to localize sound sources in acoustic environments with strong reverberation. The proposed system is inspired on the precedence effect used by the human auditory system and uses only two acoustic sensors. It implements a modified version of the algorithm proposed by Huang that uses the precedence effect in order to achieve robust sound localization even in reverberant environments. The localization system was impletented in a C31 DSP for real time demonstration and several experiments were performed showing the validity of our solution. Finally, the paper also proposes a method to estimate on-line the decay of the reverberation, using the received sound signals, only.

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AES - Audio Engineering Society