Speech enhancement using wavelet transform with constrained thresholds

ASIA unversity > 資訊學院 > 資訊傳播學系 > 會議論文 > Item 310904400/13102

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://asiair.asia.edu.tw/ir/handle/310904400/13102

题名:	Speech enhancement using wavelet transform with constrained thresholds
作者:	陸清達;Lu, Ching-Ta;王小川;Wang, Hsiao-Chuan;陸清達;Lu, Ching-Ta
贡献者:	資訊傳播學系
日期:	2002-08
上传时间:	2012-11-22 08:45:53 (UTC+0)
摘要:	Although the power spectral subtraction (PSS) in frequency domain and the soft/hard thresholding function in wavelet domain have been successfully applied in speech enhancement, however they increase the probability of negative error and generate musical residual noise. In this paper, we propose a novel scheme that adapts the weight to wavelet coefficients (WCs) for each subband. The weights of all subbands form a weighting function, it can track the speech variation in each subband. Multiplying the weighting function to WCs, the enhanced speech is obtained by inverse wavelet transforming (IWT) the modified WCs. The experiments show that the proposed speech enhancement method can efficiently eliminate the additive noise. Moreover, it is almost free from the musical residual noise.
關聯:	International Symposium on Chinese Spoken Language Processing
显示于类别:	[資訊傳播學系] 會議論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	299	检视/开启

在ASIAIR中所有的数据项都受到原著作权保护.