公开(公告)号：WO2010079167A4

公开(公告)日：2010-10-14

申请号：PCT/EP2010050057

申请日：2010-01-05

Applicant: SKYPE LTD ,  VOS KOEN BERNARD ,  JENSEN SOREN SKAK

Inventor： VOS KOEN BERNARD ,  JENSEN SOREN SKAK

IPC: G10L19/12 ,  G10L19/09

CPC classification number: G10L19/12 ,  G10L19/09

Abstract: A method, system and computer program for encoding speech according to a source-filter model. The method comprises deriving a spectral envelope signal representative of a modelled filter and a first remaining signal representative of a modelled source signal, and deriving a second remaining signal from the first remaining signal by, at intervals during the encoding: exploiting a correlation between approximately periodic portions in the first remaining signal to generate a predicted version of a later portion from a stored version of an earlier portion, and using the predicted version of the later portion to remove an effect of said periodicity from the first remaining signal. The method further comprises, once every number of intervals, transforming the stored version of the earlier portion of the first remaining signal prior to generating the predicted version of the respective later portion.

Abstract translation: 一种根据源滤波器模型对语音进行编码的方法，系统和计算机程序。 该方法包括导出表示建模过滤器的频谱包络信号和表示建模源信号的第一剩余信号，以及在编码期间间隔从第一剩余信号导出第二剩余信号：利用近似周期性的相关性 第一剩余信号中的部分，以从较早部分的存储版本生成稍后部分的预测版本，并​​且使用稍后部分的预测版本来从第一剩余信号中去除所述周期性的影响。 该方法还包括：每产生一次间隔之后，在生成相应较后部分的预测版本之前变换第一剩余信号的较早部分的存储版本。

公开(公告)号：WO2010066861A3

公开(公告)日：2010-08-05

申请号：PCT/EP2009066876

申请日：2009-12-10

Applicant: SKYPE LTD ,  NILSSON MATTIAS ,  VANG ANDERSEN SOREN ,  VOS KOEN BERNARD

Inventor： NILSSON MATTIAS ,  VANG ANDERSEN SOREN ,  VOS KOEN BERNARD

IPC: G10L21/02 ,  G10L21/038

CPC classification number: G10L21/038

Abstract: A method of regenerating wideband speech from narrowband speech, the method comprising: receiving samples of a narrowband speech signal in a first range of frequencies; modulating received samples of the narrowband speech signal with a modulation signal having a modulating frequency adapted to upshift each frequency in the first range of frequencies by an amount determined by the modulating frequency wherein the modulating frequency is selected to translate into a target band a selected frequency band within the first range of signals; filtering the modulated samples using a target band filter to form a regenerated speech signal in the target band; and combining the narrow band speech signal with the regenerated speech signal in the target band to regenerate a wideband speech signal, the method comprising the step of controlling the modulated samples to lie in a second range of frequencies identified by determining a signal characteristic of frequencies in the first range of frequencies.

Abstract translation: 一种从窄带语音再生宽带语音的方法，该方法包括：在第一频率范围内接收窄带语音信号的样本; 用具有调制频率的调制信号调制接收到的窄带语音信号样本，该调制频率适于将第一频率范围中的每个频率升频由调制频率确定的量，其中选择调制频率以将目标频带转换为选定频率 在第一信号范围内; 使用目标频带滤波器对经调制的采样进行滤波以在目标频带中形成再生语音信号; 以及将窄带语音信号与目标频带中的再生语音信号组合以再生宽带语音信号，该方法包括以下步骤：将调制样本控制在通过确定频率的信号特征的第二频率范围内 第一个频率范围。

公开(公告)号：WO2010066861A4

公开(公告)日：2010-11-11

申请号：PCT/EP2009066876

申请日：2009-12-10

Applicant: SKYPE LTD ,  NILSSON MATTIAS ,  VANG ANDERSEN SOREN ,  VOS KOEN BERNARD

Inventor： NILSSON MATTIAS ,  VANG ANDERSEN SOREN ,  VOS KOEN BERNARD

IPC: G10L21/02 ,  G10L21/038

CPC classification number: G10L21/038

Abstract: A method of regenerating wideband speech from narrowband speech, the method comprising: receiving samples of a narrowband speech signal in a first range of frequencies; modulating received samples of the narrowband speech signal with a modulation signal having a modulating frequency adapted to upshift each frequency in the first range of frequencies by an amount determined by the modulating frequency wherein the modulating frequency is selected to translate into a target band a selected frequency band within the first range of signals; filtering the modulated samples using a target band filter to form a regenerated speech signal in the target band; and combining the narrow band speech signal with the regenerated speech signal in the target band to regenerate a wideband speech signal, the method comprising the step of controlling the modulated samples to lie in a second range of frequencies identified by determining a signal characteristic of frequencies in the first range of frequencies.

Abstract translation: 一种从窄带语音再生宽带语音的方法，所述方法包括：在第一频率范围内接收窄带语音信号的样本; 利用具有调制频率的调制信号来调制所述窄带语音信号的接收样本，所述调制信号具有调制频率，所述调制频率适于将所述第一频率范围中的每个频率升高由调制频率确定的量，其中所述调制频率被选择为将所选频率转换成目标频带 在第一范围内的信号; 使用目标频带滤波器对调制样本进行滤波，以在目标频带中形成再生语音信号; 以及将所述窄带语音信号与所述目标频带中的所述再生语音信号组合以再生宽带语音信号，所述方法包括以下步骤：将所述调制样本控制在通过确定频率的信号特性来识别的频率的第二范围内 第一个频率范围。

公开(公告)号：WO2006116024A3

公开(公告)日：2007-03-22

申请号：PCT/US2006014992

申请日：2006-04-21

Applicant: QUALCOMM INC ,  VOS KOEN BERNARD ,  KANDHADAI ANANTHAPADMANABHAN A

Inventor： VOS KOEN BERNARD ,  KANDHADAI ANANTHAPADMANABHAN A

IPC: G10L19/04 ,  G10L19/02

CPC classification number: G10L19/04 ,  G10L19/0208 ,  G10L21/038

Abstract: A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.

Abstract translation: 根据一个实施例的信号处理方法包括：计算基于语音信号的低频部分的第一信号的包络，计算基于语音的高频部分的第二信号的包络 信号，并且根据第一和第二信号的包络之间的时变关系来计算多个增益因子值。 该方法包括基于第一和第二信号的包络之间的关系随时间的变化而衰减多个增益因子值中的至少一个。 在一个示例中，信封之间的关系随时间的变化由多个增益因子值中的至少一个距离指示。

公开(公告)号：WO2006107839A3

公开(公告)日：2007-04-05

申请号：PCT/US2006012233

申请日：2006-04-03

Applicant: QUALCOMM INC ,  VOS KOEN BERNARD ,  KANDHADAI ANANTHAPADMANABHAN A

Inventor： VOS KOEN BERNARD ,  KANDHADAI ANANTHAPADMANABHAN A

IPC: G10L21/02 ,  G10L19/12

CPC classification number: G10L21/0208 ,  G10L19/0208 ,  G10L19/038 ,  G10L19/24 ,  G10L21/0232 ,  G10L21/038

Abstract: A method and apparatus for generating a highband excitation signal (S120) including generating a spectrally extended signal by extending the spectrum of a signal (A400) that is based on an encoded lowband excitation signal (S50); and performing anti-sparseness filtering (600) of a signal that is based on the encoded lowband excitation signal. The highband excitation signal is based on the spectrally extended signal, and the highband excitation signal is based on a result of the anti-sparseness filtering.

Abstract translation: 一种生成高频激励信号的方法和装置，包括通过扩展基于编码的低频带激励信号的信号（A400）的频谱来生成扩频信号（S50）; 以及执行基于编码的低频带激励信号的信号的反稀疏滤波（600）。 高频激励信号基于频谱扩展信号，高频激励信号基于反稀疏滤波的结果。