Audio Signal Synthesizer and Audio Signal Encoder
    2.
    发明申请
    Audio Signal Synthesizer and Audio Signal Encoder 有权
    音频信号合成器和音频信号编码器

    公开(公告)号:US20110173006A1

    公开(公告)日:2011-07-14

    申请号:US13004248

    申请日:2011-01-11

    IPC分类号: G10L19/00

    CPC分类号: G10L21/038 G10L19/02

    摘要: An audio signal synthesizer generates a synthesis audio signal having a first frequency band and a second synthesized frequency band derived from the first frequency band and comprises a patch generator, a spectral converter, a raw signal processor and a combiner. The patch generator performs at least two different patching algorithms, each patching algorithm generating a raw signal. The patch generator is adapted to select one of the at least two different patching algorithms in response to a control information. The spectral converter converts the raw signal into a raw signal spectral representation. The raw signal processor processes the raw signal spectral representation in response to spectral domain spectral band replication parameters to obtain an adjusted raw signal spectral representation.

    摘要翻译: 音频信号合成器生成具有从第一频带导出的第一频带和第二合成频带的合成音频信号,并且包括片生成器,频谱转换器,原始信号处理器和组合器。 补丁生成器执行至少两种不同的修补算法,每个修补算法生成原始信号。 补丁生成器适于响应于控制信息来选择至少两个不同的修补算法之一。 光谱转换器将原始信号转换为原始信号光谱表示。 原始信号处理器响应于频域谱带复制参数处理原始信号频谱表示,以获得经调整的原始信号频谱表示。

    Audio signal synthesizer for selectively performing different patching algorithms
    3.
    发明授权
    Audio signal synthesizer for selectively performing different patching algorithms 有权
    音频信号合成器,用于选择性地执行不同的修补算法

    公开(公告)号:US08731948B2

    公开(公告)日:2014-05-20

    申请号:US13004248

    申请日:2011-01-11

    IPC分类号: G10L19/00

    CPC分类号: G10L21/038 G10L19/02

    摘要: An audio signal synthesizer generates a synthesis audio signal having a first frequency band and a second synthesized frequency band derived from the first frequency band and comprises a patch generator, a spectral converter, a raw signal processor and a combiner. The patch generator performs at least two different patching algorithms, each patching algorithm generating a raw signal. The patch generator is adapted to select one of the at least two different patching algorithms in response to a control information. The spectral converter converts the raw signal into a raw signal spectral representation. The raw signal processor processes the raw signal spectral representation in response to spectral domain spectral band replication parameters to obtain an adjusted raw signal spectral representation.

    摘要翻译: 音频信号合成器生成具有从第一频带导出的第一频带和第二合成频带的合成音频信号,并且包括片生成器,频谱转换器,原始信号处理器和组合器。 补丁生成器执行至少两种不同的修补算法,每个修补算法生成原始信号。 补丁生成器适于响应于控制信息来选择至少两个不同的修补算法之一。 光谱转换器将原始信号转换为原始信号光谱表示。 原始信号处理器响应于频域谱带复制参数处理原始信号频谱表示,以获得经调整的原始信号频谱表示。

    Apparatus and method for generating a bandwidth extended signal
    7.
    发明授权
    Apparatus and method for generating a bandwidth extended signal 有权
    用于产生带宽扩展信号的装置和方法

    公开(公告)号:US08880410B2

    公开(公告)日:2014-11-04

    申请号:US13004314

    申请日:2011-01-11

    IPC分类号: G10L19/00 G10L21/038

    CPC分类号: G10L21/038

    摘要: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.

    摘要翻译: 一种用于从输入信号产生带宽扩展信号的装置包括补丁发生器和组合器。 输入信号分别由第一和第二分辨率数据表示为第一和第二频带,第二分辨率低于第一分辨率数据。 贴片发生器分别根据第一和第二修补算法从输入信号的第一频带产生第一和第二贴片。 使用第二修补算法生成的第二贴片的频谱密度高于使用第一修补算法生成的第一贴片的频谱密度。 组合器将输入信号的两个补丁和第一个频带组合起来,以获得带宽扩展信号。 该装置根据第一和第二修补算法对输入信号进行缩放或缩放第一和第二贴片,使得带宽扩展信号满足频谱包络准则。

    Apparatus and Method for Generating a Bandwidth Extended Signal
    8.
    发明申请
    Apparatus and Method for Generating a Bandwidth Extended Signal 有权
    用于产生带宽扩展信号的装置和方法

    公开(公告)号:US20110216918A1

    公开(公告)日:2011-09-08

    申请号:US13004314

    申请日:2011-01-11

    IPC分类号: H03G5/00

    CPC分类号: G10L21/038

    摘要: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.

    摘要翻译: 一种用于从输入信号产生带宽扩展信号的装置包括补丁发生器和组合器。 输入信号分别由第一和第二分辨率数据表示为第一和第二频带,第二分辨率低于第一分辨率数据。 贴片发生器分别根据第一和第二修补算法从输入信号的第一频带产生第一和第二贴片。 使用第二修补算法生成的第二贴片的频谱密度高于使用第一修补算法生成的第一贴片的频谱密度。 组合器将输入信号的两个补丁和第一个频带组合起来,以获得带宽扩展信号。 该装置根据第一和第二修补算法对输入信号进行缩放或缩放第一和第二贴片,使得带宽扩展信号满足频谱包络准则。

    Apparatus and a method for decoding an encoded audio signal
    9.
    发明授权
    Apparatus and a method for decoding an encoded audio signal 有权
    用于解码编码音频信号的装置和方法

    公开(公告)号:US08275626B2

    公开(公告)日:2012-09-25

    申请号:US13004272

    申请日:2011-01-11

    IPC分类号: G10L19/00

    摘要: An apparatus for decoding an encoded audio signal having first and second portions encoded in accordance with first and second encoding algorithms, respectively, BWE parameters for the first and second portions and a coding mode information indicating a first or a second decoding algorithm, includes first and second decoders, a BWE module and a controller. The decoders decode portions in accordance with decoding algorithms for time portions of the encoded signal to obtain decoded signals. The BWE module has a controllable crossover frequency and is configured for performing a bandwidth extension algorithm using the first decoded signal and the BWE parameters for the first portion, and for performing a bandwidth extension algorithm using the second decoded signal and the bandwidth extension parameter for the second portion. The controller controls the crossover frequency for the BWE module in accordance with the coding mode information.

    摘要翻译: 一种用于解码具有根据第一和第二编码算法编码的第一和第二部分的编码音频信号的装置,分别用于第一和第二部分的BWE参数和指示第一或第二解码算法的编码模式信息包括第一和第二编码算法 第二解码器,BWE模块和控制器。 解码器根据编码信号的时间部分的解码算法来解码部分,以获得解码信号。 BWE模块具有可控的交叉频率,并且被配置为使用第一解码信号和第一部分的BWE参数来执行带宽扩展算法,并且用于使用第二解码信号和带宽扩展参数来执行带宽扩展算法 第二部分。 控制器根据编码模式信息控制BWE模块的交叉频率。