Invention Grant
- Patent Title: Method for predicting bandwidth extension frequency band signal, and decoding device
- Patent Title (中): 预测带宽扩展频带信号的方法，以及解码装置
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Application No.: US14806896Application Date: 2015-07-23
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Publication No.: US09361904B2Publication Date: 2016-06-07
- Inventor: Zexin Liu , Lei Miao , Fengyan Qi
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Conley Rose, P.C.
- Agent Grant Rodolph
- Priority: CN201310034240 20130129
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/038 ; G10L19/02 ; G10L19/08
Abstract:
A method for predicting a bandwidth extension frequency band signal includes demultiplexing a received bitstream to obtain a frequency domain signal; determining whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; predicting an excitation signal of the bandwidth extension frequency band according to the determination; and predicting the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band.
Public/Granted literature
- US20150332688A1 Method for Predicting Bandwidth Extension Frequency Band Signal, and Decoding Device Public/Granted day:2015-11-19
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