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CN102884573B 使用取样率依赖时间扭曲轮廓编码的音频信号解码器、音频信号编码器及方法 有权

使用取样率依赖时间扭曲轮廓编码的音频信号解码器、音频信号编码器及方法
摘要：
一种经组配来基于包含取样频率信息的编码音频信号表示形态、编码时间扭曲信息及编码频谱表示形态而提供一解码音频信号表示形态的音频信号解码器，其包含一时间扭曲计算器及一扭曲解码器。该时间扭曲计算器经组配来依据该取样频率信息而调适一映射规则用以将编码时间扭曲信息的码字组映射至描述该解码时间扭曲信息的解码时间扭曲值。扭曲解码器经组配来基于编码频谱表示形态及依据该解码时间扭曲信息而提供该解码音频信号表示形态。
摘要（英）：

An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation including a sampling frequency information, an encoded time warp information and an encoded spectrum representation includes a time warp calculator and a warp decoder. The time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.

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