INTERSPEECH 2004 - ICSLP 8th International Conference on Spoken Language Processing Jeju Island, Korea October 4-8, 2004

Noise Reduction Using Hybrid Noise Estimation Technique and Post-Filtering

Junfeng Li, Masato Akagi

Japan Advanced Institute of Science and Technology, Japan

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 multi-channel noise estimation approach and a single-channel estimation approach to improve estimation accuracy for localized noise components. The non-localized 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.

Full Paper

Bibliographic reference.  Li, Junfeng / Akagi, Masato (2004): "Noise reduction using hybrid noise estimation technique and post-filtering", In INTERSPEECH-2004, 2705-2708.