Method and device for regulating vector as well as method and device for decoding regulated vector
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Publication Date
- 2009-11-25
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to the technical field of data compression, in particular to a vector normalization method and device and a vector normalization decoding method and device. Background technique
[0002] At present, a variety of vector quantizers have evolved on the basis of the most basic vector quantizers. There is a type of vector quantizer that designs the corresponding optimal quantizer according to the probability distribution characteristics of the input signal, and another vector quantizer The design of the filter is independent of the probability distribution characteristics of the input signal.
[0003] Among them, a vector quantizer that is not related to the probability distribution characteristics of the input signal is designed, such as a spherical vector quantizer. According to the rate-distortion theory, Gaussian noise has the largest differential entropy and is the most difficult to quantify probability distribution characteristi...