In this paper a new noise spectrum estimation algorithm is described for single-channel acoustic noise suppression systems. To achieve fast convergence during abrupt change of noise floor, the proposed algorithm uses a minimum correction module to adjust an adaptive noise estimator. The minimum search duration is controlled by a harmonicity module for improved noise tracking under continuous voicing condition. Objective test results show that the proposed algorithm consistently outperforms competitive noise estimation methods.
Bibliographic reference. Sun, Xuejing / Yen, Kuan-Chieh / Alves, Rogerio (2010): "Robust noise estimation using minimum correction with harmonicity control", In INTERSPEECH-2010, 1085-1088.