公开(公告)号：US20100318352A1

公开(公告)日：2010-12-16

申请号：US12867969

申请日：2009-02-02

申请人： Herve Taddei ,  Stefan Schandl ,  Panji Setiawan

发明人： Herve Taddei ,  Stefan Schandl ,  Panji Setiawan

IPC分类号： G10L21/02

CPC分类号： G10L19/012 ,  G10L19/0204 ,  G10L19/24

摘要： The invention relates to a method and means for encoding background noise information during voice signal encoding methods. A basic idea of the invention is to provide the scalability known for transmitting voice information in a similar manner when forming an SID frame. The invention provides encoding of a narrowband first component and of a broadband second component of a piece of background noise information and formation of an SID frame which describes the background noise with separate areas for the first and second components.

摘要翻译： 本发明涉及一种在语音信号编码方法中编码背景噪声信息的方法和装置。 本发明的基本思想是提供在形成SID帧时以类似方式发送语音信息的已知的可扩展性。 本发明提供了一段背景噪声信息的窄带第一分量和宽带第二分量的编码，以及形成用于第一和第二分量的分离区域描述背景噪声的SID帧。

公开(公告)号：US20080126081A1

公开(公告)日：2008-05-29

申请号：US11662592

申请日：2006-06-30

申请人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Aulis Telle ,  Peter Vary

发明人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Aulis Telle ,  Peter Vary

IPC分类号： G10L19/00

CPC分类号： G10L21/038

摘要： A method for the artificial extension of the bandwidth of speech signals involves: a) Provision of a wideband input speech signal (swbi(k)); b) Determination of the signal components (seb(k)) of the wideband input speech signal (swbi(k)) required for the bandwidth extension from an extension band from the wideband input speech signal (swbi(k)); c) Determination of the temporal envelopes of the signal components (seb(k)) determined for the bandwidth extension; d) Determination of the spectral envelopes of the signal components (seb(k)) determined for bandwidth extension; e) Encoding of the information for the temporal envelopes and the spectral envelopes, and provision of the encoded information by carrying out the extension of the bandwidth; f) Decoding of the encoded information and generation of the temporal envelopes and the spectral envelopes from the encoded information for the production of a bandwidth-extended output speech signal (swbo(k)).

摘要翻译： 用于人造扩展语音信号带宽的方法包括：a）提供宽带输入语音信号（k）; b）要求确定宽带输入语音信号（s（k））的信号分量（s），（k）） 用于从宽带输入语音信号（k）的扩展频带的带宽扩展; c）确定针对带宽扩展确定的信号分量的时间包络的确定（s∈Ek（k））; d）确定用于带宽扩展确定的信号分量（s）的频谱包络的​​确定; e）对时间信封和频谱包络信息进行编码，并通过执行带宽的扩展来提供编码信息; f）从用于产生带宽扩展输出语音信号的编码信息中解码编码信息和生成时间包络和频谱包络， （k））。

公开(公告)号：US08612216B2

公开(公告)日：2013-12-17

申请号：US12223362

申请日：2006-01-31

申请人： Martin Gartner ,  Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Peter Vary

发明人： Martin Gartner ,  Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Peter Vary

IPC分类号： G10L19/08 ,  G10L19/12

CPC分类号： G10L19/0208 ,  G10L21/038

摘要： To form an audio signal, frequency components of the audio signal which are allotted to a first subband are formed by means of a subband decoder using supplied fundamental period values which respectively indicate a fundamental period for the audio signal. Frequency components of the audio signal which are allotted to a second subband are formed by exciting an audio synthesis filter using an excitation signal which is specific to the second subband. To produce this excitation signal, an excitation signal generator derives a fundamental period parameter from the fundamental period values. The fundamental period parameter is used by the excitation signal generator to form pulses with a pulse shape which is dependent on the fundamental period parameter at an interval of time which is determined by the fundamental period parameter and to mix them with a noise signal.

摘要翻译： 为了形成音频信号，分配给第一子带的音频信号的频率分量通过使用提供的基本周期值的子带解码器形成，该基带周期值分别表示音频信号的基本周期。 通过使用特定于第二子带的激励信号激励音频合成滤波器来形成分配给第二子带的音频信号的频率分量。 为了产生该激励信号，激励信号发生器从基本周期值导出基本周期参数。 基频周期参数由激励信号发生器使用，以形成脉冲形状的脉冲，脉冲形状取决于基本周期参数，该时间间隔由基本周期参数决定，并将其与噪声信号混合。

公开(公告)号：US08135584B2

公开(公告)日：2012-03-13

申请号：US12223359

申请日：2006-01-31

申请人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei

发明人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei

IPC分类号： G10L19/00

CPC分类号： G10L21/038 ,  G10L19/12 ,  G10L2019/0001

摘要： According to the invention, an excitation signal is generated as a result of sampled excitation values in order to excite an audio synthesis filter, the generated sampled excitation values being continuously stored in an adaptive codebook. A noise generator is provided which continuously generates random sampled values. A sequence of the stored sampled excitation values is selected from the adaptive codebook based on a fed audio fundamental frequency parameter by means of which a time gap between the sequence that is to be selected and the actual time reference is predefined. The excitation signal is generated by mixing the selected sequence with a random sequence encompassing actual random sampled valued of the noise generator.

摘要翻译： 根据本发明，作为采样激励值的结果产生激励信号，以激发音频合成滤波器，所生成的采样激励值被连续存储在自适应码本中。 提供连续产生随机采样值的噪声发生器。 基于馈送的音频基频参数，从自适应码本中选择存储的采样激励值的序列，通过该序列，预定要选择的序列与实际时间基准之间的时间间隔。 通过将所选择的序列与包含噪声发生器的实际随机采样值的随机序列混合来产生激励信号。

公开(公告)号：US20110004471A1

公开(公告)日：2011-01-06

申请号：US12864951

申请日：2009-02-02

申请人： Stefan Schandl ,  Panji Setiawan ,  Herve Taddei

发明人： Stefan Schandl ,  Panji Setiawan ,  Herve Taddei

IPC分类号： G10L21/02

CPC分类号： G10L19/012 ,  G10L19/18

摘要： The inventive method provides for an encoder in a voice codec to be designed such that after a particular idle time (“Idle Period”) it recalculates the averaged energy and the autocorrelation function. Administrative points in the network inform the encoder about the idle time which has been set in the transmission network.

摘要翻译： 本发明的方法提供了一种语音编解码器中的编码器，以便在特定的空闲时间（“空闲周期”）之后重新计算平均的能量和自相关函数。 网络中的管理点通知编码器已经在传输网络中设置的空闲时间。

公开(公告)号：US20090276226A1

公开(公告)日：2009-11-05

申请号：US11794790

申请日：2005-12-05

申请人： Wolfgang Bauer ,  Stefan Schandl

发明人： Wolfgang Bauer ,  Stefan Schandl

IPC分类号： G10L21/00

CPC分类号： G10L19/09

摘要： An analog signal divided into time frames is encoded and a synthetic signal is formed on the model thereof in a time frame manner via a synthesis filter which is excited by an excitation signal. The excitation signal is formed by at least one adaptive code list containing a plurality of scanning values provided with a defined scanning space. For the actual excitation signal, a segment corresponding to the time frame length is selected from the plurality of scanning values via a speech-based frequency parameter which can take non-integer values and, in such a case, the values intermediate to the scanning values defined by the speech-based frequency parameter are formed in such a way that the time space between the intermediate values and the scanning values is reduced and the totality of the intermediate and the scanning values is used for forming the excitation signal.

摘要翻译： 被分割为时间帧的模拟信号被编码，并且通过由激励信号激励的合成滤波器以时间帧的形式在其模型上形成合成信号。 激励信号由至少一个自适应代码表形成，该自适应代码列表包含设置有定义的扫描空间的多个扫描值。 对于实际激励信号，通过基于语音的频率参数从多个扫描值中选择对应于时间帧长度的段，其可以取非整数值，并且在这种情况下，与扫描值相对应的值 由基于语音的频率参数定义的方式形成为使得中间值与扫描值之间的时间间隔减小，并且中间和扫描值的总和被用于形成激励信号。

公开(公告)号：US08265940B2

公开(公告)日：2012-09-11

申请号：US11662592

申请日：2006-06-30

申请人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Aulis Telle ,  Peter Vary

发明人： Bernd Geiser ,  Peter Jax ,  Stefan Schandl ,  Herve Taddei ,  Aulis Telle ,  Peter Vary

IPC分类号： G10L19/00 ,  G10L21/00

CPC分类号： G10L21/038

摘要： A method for the artificial extension of the bandwidth of speech signals involves: a) Provision of a wideband input speech signal (swbi(k)); b) Determination of the signal components (seb(k)) of the wideband input speech signal (swbi(k)) required for the bandwidth extension from an extension band from the wideband input speech signal (swbi(k)); c) Determination of the temporal envelopes of the signal components (seb(k)) determined for the bandwidth extension; d) Determination of the spectral envelopes of the signal components (seb(k)) determined for bandwidth extension; e) Encoding of the information for the temporal envelopes and the spectral envelopes, and provision of the encoded information by carrying out the extension of the bandwidth; f) Decoding of the encoded information and generation of the temporal envelopes and the spectral envelopes from the encoded information for the production of a bandwidth-extended output speech signal (swbo(k)).

摘要翻译： 用于人造语音信号带宽扩展的方法包括：a）提供宽带输入语音信号（swbi（k））; b）确定来自宽带输入语音信号（swbi（k））的扩展频带的带宽扩展所需的宽带输入语音信号（swbi（k））的信号分量（seb（k）））。 c）确定为带宽扩展确定的信号分量（seb（k））的时间包络的确定; d）确定用于带宽扩展的信号分量（seb（k））的频谱包络的​​确定; e）对时间信封和频谱包络信息进行编码，并通过执行带宽的扩展来提供编码信息; f）从用于产生带宽扩展输出语音信号（swbo（k））的编码信息中解码编码信息和生成时间包络和频谱包络。

公开(公告)号：US20120014474A1

公开(公告)日：2012-01-19

申请号：US13133978

申请日：2009-12-10

申请人： Stefan Schandl ,  Panji Setiawan

发明人： Stefan Schandl ,  Panji Setiawan

IPC分类号： H04L25/49

CPC分类号： G10L19/24

摘要： The invention relates to a method for the scalable improvement of the quality of an encoding method according to IT-U Recommendation G.722, including the following steps:-a digital error signal (E) derived from an input signal to be encoded and a prognosis signal is compared in sections to a number of M*LN different reference signals in an iterative process having a number of repeated steps depending on the scope of the expansion, and the reference signal having a minimum error signal of a prescribed error criteria is derived therefrom,-the reference signals are each made up of equidistant Dirac impulses δ(n) according to (I), wherein off=[0 . . . M−1], indicates the distance of the first impulse from a zero time point, α∈{α,α, . . . ,α} indicates the amplitude value, M the distance between the individual pulses, N the number of pulses, and L the number of different levels,-the information about the reference signal having the minimum error signal is transmitted. c  ( n ) = ∑ p = 0 N - 1  α p · δ  ( n - off - M · p ) ( I )

摘要翻译： 本发明涉及一种根据IT-U建议G.722可扩展地提高编码方法质量的方法，包括以下步骤： - 从要编码的输入信号导出的数字误差信号（E）和 预测信号在具有取决于扩展的范围的多个重复步骤的迭代过程中与多个M * LN不同参考信号进行比较，并且导出具有规定误差准则的最小误差信号的参考信号 参考信号各自由根据（I）的等距离的狄拉克脉冲δ（n）组成，其中off = [0。 。 。 M-1]表示第一个脉冲与零时间点的距离，α∈{α，α， 。 。 ，α}表示振幅值，M表示各个脉冲之间的距离，N表示脉冲数，L表示不同电平的数量， - 关于具有最小误差信号的参考信号的信息被发送。 c（n）=Σp = 0 N - 1αα·δ（n-off-M·p）（I）

公开(公告)号：US08581757B2

公开(公告)日：2013-11-12

申请号：US13319806

申请日：2010-06-30

申请人： Stefan Schandl ,  Panji Setiawan

发明人： Stefan Schandl ,  Panji Setiawan

IPC分类号： H03M7/30

CPC分类号： H03M7/3082 ,  G10L19/00

摘要： The invention relates to a method for the vector quantization of a feature vector, in particular with respect to a data compression of a signal to be transmitted or to be stored, particularly a voice signal or a video signal, wherein at least one codebook from a plurality of codebook vectors is searched for a code vector representing the feature vector. During the search, a sequence of codebook vectors is examined for the suitability thereof to represent the feature vector. In the course of the search for the code vector, a set of neighboring vectors is dedicated to at least one of the codebook vectors potentially to be examined, preferably prior to the search. The search for the code vector includes at least part of the neighboring vectors.

摘要翻译： 本发明涉及一种用于特征矢量矢量量化的方法，特别是关于待传输或待存储的信号的数据压缩，特别是语音信号或视频信号，其中至少一个来自 搜索多个码本向量来表示特征向量的码矢量。 在搜索期间，检查码本向量的序列是否适于表示特征向量。 在搜索码矢量的过程中，优选地在搜索之前，一组相邻向量专用于潜在地被检查的码本矢量中的至少一个。 对码矢量的搜索包括至少部分相邻矢量。

公开(公告)号：US08260606B2

公开(公告)日：2012-09-04

申请号：US12867791

申请日：2009-02-02

申请人： Panji Setiawan ,  Stefan Schandl ,  Herve Taddei

发明人： Panji Setiawan ,  Stefan Schandl ,  Herve Taddei

IPC分类号： G10L19/00 ,  G10L11/02

CPC分类号： G10L19/012 ,  G10L19/24

摘要： A basic idea of the invention is to ascertain information on the course of the bit rate switching during an active speech phase. According to the invention, during the speech phase, information on the percentage proportion of broadband active speech frames in comparison to narrowband active speech frames is compiled on the part of the decoder. A high percentage proportion of broadband active speech frames indicates that a broadband use is preferred on the part of the codec and therefore a need exists for synthesizing noise information in broadband form during a DTX phase.

摘要翻译： 本发明的基本思想是确定在活动语音阶段期间比特率切换过程的信息。 根据本发明，在语音阶段期间，在解码器的一部分上编译与宽带有源语音帧相比宽带有效语音帧的百分比的信息。 高比例的宽带有源语音帧表示宽带使用在编解码器方面是优选的，因此需要在DTX阶段合成宽带形式的噪声信息。