The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2011
Filed:
Sep. 09, 2009
Wuzhou Zhan, Shenzhen, CN;
Dongqi Wang, Shenzhen, CN;
Yongfeng Tu, Shenzhen, CN;
Jing Wang, Shenzhen, CN;
Qing Zhang, Shenzhen, CN;
Lei Miao, Shenzhen, CN;
Jianfeng Xu, Shenzhen, CN;
Chen HU, Shenzhen, CN;
Yi Yang, Shenzhen, CN;
Zhengzhong Du, Shenzhen, CN;
Fengyan Qi, Shenzhen, CN;
Wuzhou Zhan, Shenzhen, CN;
Dongqi Wang, Shenzhen, CN;
Yongfeng Tu, Shenzhen, CN;
Jing Wang, Shenzhen, CN;
Qing Zhang, Shenzhen, CN;
Lei Miao, Shenzhen, CN;
Jianfeng Xu, Shenzhen, CN;
Chen Hu, Shenzhen, CN;
Yi Yang, Shenzhen, CN;
Zhengzhong Du, Shenzhen, CN;
Fengyan Qi, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
The present invention discloses a method for obtaining an attenuation factor. The method is adapted to process the synthesized signal in packet loss concealment, and includes: obtaining a change trend of a pitch of a signal; obtaining an attenuation factor, according to the change trend of the pitch of the signal. The present invention also discloses an apparatus for obtaining an attenuation factor. A self-adaptive attenuation factor is adjusted dynamically by using the latest change trend of a history signal by using the present invention. The smooth transition from the history data to the data last received is realized so that the attenuation speed is kept consistent between the compensated signal and the original signal as much as possible for adapting to the characteristic of various human voices.