HRI-JP HOME > Research > Publications > SLAMに基づく非同期分散マイクロホンアレイのキャリブレーションの評価

December 2011
This paper evaluates an online calibration method for asynchronous microphone arrays. Conventional microphone array techniques require a lot of measurements of transfer functions to calibrate microphone locations, and a multi-channel A/D converter for intermicrophone synchronization. To solve these two problems, we proposed an online framework combining Simultaneous Localization and Mapping (SLAM) and beamforming and an implemented prototype system using an Extended Kalman Filter (EKF) showed the feasibility of the proposed framework in a simulated and a real environment. In this paper, we show the robustness of the proposed framework for different motion models, motion and observation errors to apply to real microphone array systems through numerical experiments.