Noise reduction using hybrid noise estimation technique and post-filtering

Junfeng Li, Masato Akagi
2004 Interspeech 2004   unpublished
In this paper, a novel noise reduction method using hybrid noise estimation technique and post-filtering is proposed to suppress both localized and non-localized noise components which can not be dealt with by the traditional methods [2][3][4]. To do this, a hybrid noise estimation approach is proposed by combining our previously constructed multichannel noise estimation approach and a single-channel estimation approach to improve estimation accuracy for localized noise components. The
more » ... ized noise components are suppressed by a single-channel post-filter based on an optimally modified log spectral amplitude (OM-LSA) estimator. To verify the superiorities of the proposed hybrid noise estimation approach and noise reduction system, they are compared to the multi-channel and single-channel scheme based systems under various noise conditions.
doi:10.21437/interspeech.2004-718 fatcat:3kcg5ilt7zfrbp3pwyhddxs6n4