APPARATUS AND METHOD FOR CANCELLING WIDEBAND ACOUSTIC ECHO

摘要

PURPOSE: A broadband acoustic echo canceller and a method thereof are provided to improve the performance of a broadband acoustic echo device of a multichannel conference call equipment. CONSTITUTION: A central processing unit controls the transceived data flow. An operation processing unit (220) processes the data operation independently on the central processing unit. The central processing unit includes an operation decision unit (211). The operation decision unit decides a data processing operation mode. The operation processing unit performs the same process of multichannel data without interrupting the central processing unit through memory conversion. [Reference numerals] (210) Central processing unit; (211) Operation decision unit; (220) Operation processing unit; (221) Inverse correlation analysis unit; (222) Frame calculation unit; (223) Noise calculation unit; (224) First decision unit; (225) Second decision unit; (226) Control unit; (227) Filter unit; (228) Post-processing unit; (AA) Central processing unit; (BB) Interrupt processing unit; (CC) Memory control unit