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：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：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：US20090024399A1

公开(公告)日：2009-01-22

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： G10L19/00

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：US20090012782A1

公开(公告)日：2009-01-08

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： G10L19/12 ,  G10L21/02

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：US09397771B2

公开(公告)日：2016-07-19

申请号：US13333461

申请日：2011-12-21

申请人： Peter Jax ,  Johann-Markus Batke ,  Johannes Boehm ,  Sven Kordon

发明人： Peter Jax ,  Johann-Markus Batke ,  Johannes Boehm ,  Sven Kordon

IPC分类号： H04R5/00 ,  H04H20/89 ,  G10L19/008

CPC分类号： H04H20/89 ,  G10L19/008

摘要： Representations of spatial audio scenes using higher-order Ambisonics HOA technology typically require a large number of coefficients per time instant. This data rate is too high for most practical applications that require real-time transmission of audio signals. According to the invention, the compression is carried out in spatial domain instead of HOA domain. The (N+1)2 input HOA coefficients are transformed into (N+1)2 equivalent signals in spatial domain, and the resulting (N+1)2 time-domain signals are input to a bank of parallel perceptual codecs. At decoder side, the individual spatial-domain signals are decoded, and the spatial-domain coefficients are transformed back into HOA domain in order to recover the original HOA representation.

摘要翻译： 使用高阶Ambisonics HOA技术的空间音频场景的表示通常每个时刻需要大量的系数。 对于需要实时传输音频信号的大多数实际应用，此数据速率太高。 根据本发明，压缩在空间域中而不是HOA域进行。 （N + 1）2个输入HOA系数在空间域中变换为（N + 1）2个等效信号，并将得到的（N + 1）2个时域信号输入到一组并行感知编解码器。 在解码器侧，对各个空间域信号进行解码，并将空间域系数变换回到HOA域，以恢复原始的HOA表示。

公开(公告)号：US09338574B2

公开(公告)日：2016-05-10

申请号：US14130074

申请日：2012-06-15

申请人： Peter Jax ,  Johann-Markus Batke

发明人： Peter Jax ,  Johann-Markus Batke

IPC分类号： H04S5/00 ,  G10L21/00 ,  H04S3/00

CPC分类号： H04S5/00 ,  G10L21/00 ,  H04R2205/024 ,  H04S3/002 ,  H04S2400/11 ,  H04S2420/11

摘要： Higher-order Ambisonics HOA is a representation of spatial sound fields that facilitates capturing, manipulating, recording, transmission and playback of complex audio scenes with superior spatial resolution, both in 2D and 3D. The sound field is approximated at and around a reference point in space by a Fourier-Bessel series. The invention uses space warping for modifying the spatial content and/or the reproduction of sound-field information that has been captured or produced as a higher-order Ambisonics representation. Different warping characteristics are feasible for 2D and 3D sound fields. The warping is performed in space domain without performing scene analysis or decomposition. Input HOA coefficients with a given order are decoded to the weights or input signals of regularly positioned (virtual) loudspeakers.

摘要翻译： 高阶环境HOA是空间声场的表示，有助于在2D和3D中捕获，操纵，记录，传输和播放具有优异空间分辨率的复杂音频场景。 声场通过傅里叶Bessel系列在空间中的参考点附近和周围近似。 本发明使用空间扭曲来修改作为高阶Ambisonics表示被捕获或产生的声场信息的空间内容和/或再现。 不同的翘曲特性对于2D和3D声场是可行的。 翘曲在空间域执行，而不进行场景分析或分解。 具有给定次序的输入HOA系数被解码为规则定位（虚拟）扬声器的权重或输入信号。

公开(公告)号：US08428942B2

公开(公告)日：2013-04-23

申请号：US12227189

申请日：2007-05-12

申请人： Peter Jax ,  Oliver Wuebbolt ,  Johannes Boehm

发明人： Peter Jax ,  Oliver Wuebbolt ,  Johannes Boehm

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/24 ,  G10L19/0204 ,  G10L19/173

摘要： At the time of encoding audio content, the finally required data rate for delivery to the customer may be unknown. A data format is disclosed that is optimized for serving as Intermediate Format for efficient and fast recoding, to obtain one or more standard complying lossy encoded data streams with flexible data rates. Encoding can be performed in two steps that are inter-coordinated for cooperating, but may be locally and/or temporally separate. Between the partial encoders encoding parameters and/or auxiliary data are transmitted in a separate parameter enhancement layer, which complements a lossy data stream and can be used by the second encoder or transcoder for fast and computationally efficient implementation of the second encoding step. An additional lossless enhancement layer allows lossless reconstruction.

摘要翻译： 在对音频内容进行编码时，传送给客户的最终所需的数据速率可能是未知的。 公开了针对用于高效和快速重新编码的中间格式进行优化的数据格式，以获得具有灵活数据速率的一个或多个标准符合有损编码数据流。 编码可以在两个步骤中执行，这两个步骤是协调的，用于协作，但可以在本地和/或时间上分离。 编码参数和/或辅助数据的部分编码器之间的传输是在单独的参数增强层中传输的，其补充有损数据流，并可被第二编码器或代码转换器用于快速和计算上有效地实现第二编码步骤。 额外的无损增强层允许无损重建。

公开(公告)号：US20100126250A1

公开(公告)日：2010-05-27

申请号：US12696450

申请日：2010-01-29

申请人： Peter Jax

发明人： Peter Jax

IPC分类号： G01M3/28

CPC分类号： G01M3/222

摘要： In a method for detecting a leak in a double pipe, a medium located in an intermediate chamber between the interior and exterior pipe is moved toward a first end of the pipe, whereupon the medium flows in from the second end. On the first end the medium is examined for any leakage of a characteristic material, upon the detection of which a leakage signal is generated and a location of the leakage is calculated based on the transport time of the characteristic material from the leakage to the first end and on the mass flow of the medium. A corresponding device contains a conveyor unit for moving the medium through the intermediate chamber. A material sensor is disposed at the first end for examining the medium for the characteristic material. A control and analysis unit is provided for generating a leakage signal and calculating the location of the leakage.

摘要翻译： 在用于检测双管中的泄漏的方法中，位于内管和外管之间的中间室中的介质朝向管的第一端移动，于是介质从第二端流入。 在第一端，检查介质的特征材料的任何泄漏，在检测到产生泄漏信号并基于特征材料从泄漏到第一端的运输时间计算泄漏的位置时 以及介质的质量流量。 相应的装置包含用于通过中间室移动介质的输送单元。 材料传感器设置在第一端，用于检查特征材料的介质。 提供控制和分析单元，用于产生泄漏信号并计算泄漏的位置。