SIGNAL ENCODING AND DECODING METHOD AND DEVICE THE

专利名称：SIGNAL ENCODING AND DECODING

METHOD AND DEVICE THEREFOR

发明人：LIU, Zexin,MIAO, Lei,HU, Chen申请号：EP14820376.3申请日：20140625公开号：EP2988299A1公开日：20160224

专利附图：

摘要：Embodiments of the present invention provide signal encoding and decodingmethods and devices. The method includes: determining, according to a quantity ofavailable bits and a first saturation threshold i, a quantity k of subbands to be encoded,

where i is a positive number, and k is a positive integer; selecting, according to quantizedenvelopes of all subbands, k subbands from all the subbands, or selecting k subbandsfrom all subbands according to a psychoacoustic model; and performing a first-timeencoding operation on spectral coefficients of the k subbands. In the embodiments ofthe present invention, the quantity k of subbands to be encoded is determined accordingto the quantity of available bits and the first saturation threshold, and encoding isperformed on the k subbands that are selected from all the subbands, instead of on anentire frequency band, which can reduce spectrum holes of a signal obtained throughdecoding, and therefore, can improve auditory quality of an output signal.

申请人：Huawei Technologies Co., Ltd.

地址：Huawei Administration Building Bantian Longgang District Shenzhen,Guangdong 518129 CN

国籍：CN

代理机构：Kreuz, Georg Maria

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