Mobile robots in real-life settings would benefit from being able to localize and track sound sources. Such a capability can help localizing a person or an interesting event in the environment, and also provides enhanced processing for other capabilities such as speech recognition. To give this capability to a robot, the challenge is not only to localize simultaneous sound sources, but to track them over time. In this paper we propose a robust sound source localization and tracking method using an array of eight microphones. The method is based on a frequency-domain implementation of a steered beamformer along with a particle filter-based tracking algorithm. Results show that a mobile robot can localize and track in real-time multiple moving sources of different types over a range of 7 meters. These new capabilities allow a mobile robot to interact using more natural means with people in real life settings.
Furthermore, in REF , the author presented a sound source localization and tracking technique by using an array of the microphone.
Robust Localization and Tracking of Simultaneous Moving Sound Sources Using Beamforming and Particle Filtering
Robotics and Autonomous Systems Journal (Elsevier), Vol. 55, No. 3, pp. 216-228, 2007
Computer Science