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FREQUENCY ENVELOPE VECTOR QUANTIZATION METHOD AND APPARATUS
专利权人:
HUAWEI TECHNOLOGIES CO.,LTD.
发明人:
Hu Chen,Miao Lei,Liu Zexin
申请号:
US201715715179
公开号:
US2018018980(A1)
申请日:
2017.09.26
申请国别(地区):
美国
年份:
2018
代理人:
摘要:
Embodiments of the present application proposes a frequency envelope vector quantization method and apparatus, where the method includes: dividing N frequency envelopes in one frame into N1 vectors; quantizing a first vector in the N1 vectors by using a first codebook, to obtain a code word corresponding to the quantized first vector, where the first codebook is divided into 2B1 portions; determining, according to the code word corresponding to the quantized first vector; determining a second codebook according to the codebook of the ith portion; and quantizing a second vector in the N1 vectors based on the second codebook. In the embodiments of the present application, vector quantization can be performed on frequency envelope vectors by using a codebook with a smaller quantity of bits. Therefore, complexity of vector quantization can be reduced, and an effect of vector quantization can also be ensured.
来源网站:
中国工程科技知识中心
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http://www.ckcest.cn/home/

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