个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:信息与通信工程学院
学科:信号与信息处理. 通信与信息系统
办公地点:大连理工大学创新园大厦A526室
联系方式:0411-84706005-3526
电子邮箱:zhechen@dlut.edu.cn
An audio watermark-based speech bandwidth extension method
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论文类型:期刊论文
发表时间:2013-01-01
发表刊物:EURASIP JOURNAL ON AUDIO SPEECH AND MUSIC PROCESSING
收录刊物:SCIE、EI、Scopus
卷号:2013
期号:1
ISSN号:1687-4722
摘要:A novel speech bandwidth extension method based on audio watermark is presented in this paper. The time-domain and frequency-domain envelope parameters are extracted from the high-frequency components of speech signal, and then these parameters are embedded in the corresponding narrowband speech bit stream by the modified least significant bit watermark method which uses perception property. At the decoder, the wideband speech is reproduced with the reconstruction of high-frequency components based on the parameters extracted from bit stream of the narrowband speech. The proposed method can decrease poor auditory effect caused by large local distortion. The simulation results show that the synthesized wideband speech has low spectral distortion and its speech perception quality is greatly improved.