Title:
A GENERATING METHOD AND DEVICE OF BACKGROUND NOISE EXCITATION SIGNAL
Document Type and Number:
WIPO Patent Application WO/2009/115038
Kind Code:
A1
Abstract:
A generating method and device of background noise excitation signal are provided. The generating method involves: generating a quasi-excitation signal by utilizing a coding parameter in a speech coding and decoding stage and transition length of a excitation signal (101); weighting sum for the quasi-excitation signal and a random excitation signal of a background noise coding frame to obtain the excitation signal of background noise in a transition period (102). The generating device involves the generating unit of the quasi-excitation signal and the obtaining unit of the excitation signal in the transition period.
Inventors:
DAI, Jinliang (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
代金良 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
ZHANG, Libin (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
张立斌 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
代金良 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
ZHANG, Libin (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
张立斌 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
Application Number:
CN2009/070854
Publication Date:
September 24, 2009
Filing Date:
March 18, 2009
Export Citation:
Assignee:
HUAWEI TECHNOLOGIES CO., LTD. (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
华为技术有限公司 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
DAI, Jinliang (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
代金良 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
ZHANG, Libin (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
华为技术有限公司 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
DAI, Jinliang (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
代金良 (中国广东省深圳市龙岗区坂田华为总部办公楼, Guangdong 9, 518129, CN)
ZHANG, Libin (Huawei Administration Building, Bantian Longgang Distric, Shenzhen Guangdong 9, 518129, CN)
International Classes:
G10L19/00; G10L19/08; G10L19/14; H03M7/30
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, 100004, CN)
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