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1. 发明申请

US20160118053A1 APPARATUS AND METHOD FOR IMPROVED CONCEALMENT OF THE ADAPTIVE CODEBOOK IN A CELP-LIKE CONCEALMENT EMPLOYING IMPROVED PITCH LAG ESTIMATION 审中-公开
标题翻译：用于改进自适应代码的自适应代码的设备和方法使用改进的PITCH LAG估计的CELP-LIKE CONCEALMENT
公开(公告)号：US20160118053A1
公开(公告)日：2016-04-28
申请号：US14977224
申请日：2015-12-21
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Jeremie Lecomte , Michael Schnabel , Goran Markovic , Martin Dietz , Bernhard Neugebauer
IPC分类号： G10L19/005 , G10L19/107 , G10L25/90 , G10L19/125
CPC分类号： G10L19/005 , G10L19/08 , G10L19/107 , G10L19/125 , G10L25/90 , G10L2019/0002 , G10L2019/0003 , G10L2019/0008
摘要： An apparatus for determining an estimated pitch lag is provided. The apparatus includes an input interface for receiving a plurality of original pitch lag values, and a pitch lag estimator for estimating the estimated pitch lag. The pitch lag estimator is configured to estimate the estimated pitch lag depending on a plurality of original pitch lag values and depending on a plurality of information values, wherein for each original pitch lag value of the plurality of original pitch lag values, an information value of the plurality of information values is assigned to the original pitch lag value.
摘要翻译：提供了一种用于确定估计音调滞后的装置。该装置包括用于接收多个原始音调滞后值的输入接口和用于估计估计音调滞后的音调滞后估计器。音调滞后估计器被配置为根据多个原始音调滞后值并根据多个信息值来估计估计音调滞后，其中对于多个原始音调滞后值的每个原始音调滞后值，信息值将多个信息值分配给原始音调滞后值。

2. 发明授权

US09076433B2 Apparatus and method for generating a synthesis audio signal and for encoding an audio signal 有权
标题翻译：用于产生合成音频信号和用于编码音频信号的装置和方法
公开(公告)号：US09076433B2
公开(公告)日：2015-07-07
申请号：US13687678
申请日：2012-11-28
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V
发明人： Frederik Nagel , Markus Multrus , Jeremie Lecomte , Stefan Bayer , Guillaume Fuchs , Johannes Hilpert , Julien Robilliard
IPC分类号： G10L19/00 , G10L19/008 , G10L19/18 , G10L21/038
CPC分类号： G10L19/008 , G10L19/18 , G10L21/038
摘要： An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal. The spectral domain patch generator is furthermore configured to select a first spectral domain patching algorithm from the plurality of patching algorithms for a first time portion and a second spectral domain patching algorithm from the plurality of patching algorithm for a second different time portion in accordance with the patching control signal to obtain the modified spectral representation.
摘要翻译：使用补丁控制信号产生合成音频信号的装置具有第一转换器，频域补丁发生器，高频重建操纵器和组合器。第一转换器被配置为将音频信号的时间部分转换为频谱表示。频域补丁生成器被配置用于执行多个不同的频域修补算法，其中每个修补算法生成具有从音频信号的核心频带中的相应频谱分量导出的上频带中的频谱分量的修改频谱表示。频域补丁生成器还被配置为根据来自第一时间部分的多个修补算法和来自针对第二不同时间部分的多个修补算法的第二频域修补算法来选择第一频域修补算法修补控制信号以获得修改的光谱表示。

3. 发明授权

US09043215B2 Multi-resolution switched audio encoding/decoding scheme 有权
标题翻译：多分辨率切换音频编解码方案
公开(公告)号：US09043215B2
公开(公告)日：2015-05-26
申请号：US13707192
申请日：2012-12-06
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. , Voiceage Corporation
发明人： Max Neuendorf , Stefan Bayer , Jeremie Lecomte , Guillaume Fuchs , Julien Robilliard , Nikolaus Rettelbach , Frederik Nagel , Ralf Geiger , Markus Multrus , Bernhard Grill , Philippe Gournay , Redwan Salami
IPC分类号： G10L19/08 , G10L19/008 , G10L19/16 , G10L19/18 , G10L19/00 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L19/18 , G10L2019/0008
摘要： An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder has a second coding branch comprising a second time/frequency converter. Additionally, a signal analyzer for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.
摘要翻译：用于编码音频信号的音频编码器具有第一编码分支，所述第一编码分支包括用于将来自时域的信号转换成频域的第一转换器。此外，音频编码器具有包括第二时间/频率转换器的第二编码分支。另外，提供了用于分析音频信号的信号分析器。手持信号分析仪确定音频部分是否在编码器输出信号中作为来自第一编码分支的第一编码信号或来自第二编码分支的第二编码信号有效。另一方面，当生成编码信号时，信号分析仪确定由转换器施加的时间/频率分辨率。除了第一编码信号和第二编码信号之外，输出接口包括识别由第一时间/频率转换器使用并由第二时间/频率转换器使用的分辨率的分辨率信息。

4. 发明授权

US10013988B2 Apparatus and method for improved concealment of the adaptive codebook in a CELP-like concealment employing improved pulse resynchronization 有权
公开(公告)号：US10013988B2
公开(公告)日：2018-07-03
申请号：US14977195
申请日：2015-12-21
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Jeremie Lecomte , Michael Schnabel , Goran Markovic , Martin Dietz , Bernhard Neugebauer
IPC分类号： G10L19/00 , G10L15/00 , G10L19/005 , G10L19/12 , G10L19/107 , G10L19/08
CPC分类号： G10L19/005 , G10L19/08 , G10L19/107 , G10L19/12 , G10L2019/0002 , G10L2019/0008
摘要： An apparatus for reconstructing a frame including a speech signal as a reconstructed frame is provided, the apparatus including a determination unit and a frame reconstructor being configured to reconstruct the reconstructed frame, such that the reconstructed frame completely or partially includes the first reconstructed pitch cycle, such that the reconstructed frame completely or partially includes a second reconstructed pitch cycle, and such that the number of samples of the first reconstructed pitch cycle differs from a number of samples of the second reconstructed pitch cycle.

5. 发明授权

US11410663B2 Apparatus and method for improved concealment of the adaptive codebook in ACELP-like concealment employing improved pitch lag estimation 有权
公开(公告)号：US11410663B2
公开(公告)日：2022-08-09
申请号：US16445052
申请日：2019-06-18
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Jeremie Lecomte , Michael Schnabel , Goran Markovic , Martin Dietz , Bernhard Neugebauer
IPC分类号： G10L19/005 , G10L19/107 , G10L25/90 , G10L19/125 , G10L19/08 , G10L19/00
摘要： An apparatus for determining an estimated pitch lag is provided. The apparatus includes an input interface for receiving a plurality of original pitch lag values, and a pitch lag estimator for estimating the estimated pitch lag. The pitch lag estimator is configured to estimate the estimated pitch lag depending on a plurality of original pitch lag values and depending on a plurality of information values, wherein for each original pitch lag value of the plurality of original pitch lag values, an information value of the plurality of information values is assigned to the original pitch lag value.

6. 发明授权

US10319384B2 Low bitrate audio encoding/decoding scheme having cascaded switches 有权
公开(公告)号：US10319384B2
公开(公告)日：2019-06-11
申请号：US14580179
申请日：2014-12-22
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. , VoiceAge Corporation
发明人： Bernhard Grill , Roch Lefebvre , Bruno Bessette , Jimmy Lapierre , Philippe Gournay , Redwan Salami , Stefan Bayer , Guillaume Fuchs , Stefan Geyersberger , Ralf Geiger , Johannes Hilpert , Ulrich Kraemer , Jeremie Lecomte , Markus Multrus , Max Neuendorf , Harald Popp , Nikolaus Rettelbach
IPC分类号： G10L19/18 , G10L19/008 , G10L19/20 , G10L21/038 , G10L19/16 , G10L19/00 , G10L19/02
摘要： An audio encoder has a first information sink oriented encoding branch, a second information source or SNR oriented encoding branch, and a switch for switching between the first encoding branch and the second encoding branch, wherein the second encoding branch has a converter into a specific domain different from the spectral domain, and wherein the second encoding branch furthermore has a specific domain coding branch, and a specific spectral domain coding branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder for decoding a signal, and a third domain decoder and two cascaded switches for switching between the decoders.

7. 发明授权

US09997167B2 Jitter buffer control, audio decoder, method and computer program 有权
公开(公告)号：US09997167B2
公开(公告)日：2018-06-12
申请号：US14973729
申请日：2015-12-18
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Stefan Reuschl , Stefan Doehla , Jeremie Lecomte , Manuel Jander
IPC分类号： G10L19/00 , G10L21/00 , H04J3/00 , H04L12/00 , G10L19/022 , H04J3/06 , G10L19/012 , G10L19/04 , G10L21/04
CPC分类号： G10L19/022 , G10L19/012 , G10L19/04 , G10L21/04 , H04J3/0632 , H04J3/0664
摘要： A jitter buffer control for controlling a provision of a decoded audio content on the basis of an input audio content is configured to select a frame-based time scaling or a sample-based time scaling in a signal-adaptive manner. An audio decoder uses such a jitter buffer control.

8. 发明授权

US09997163B2 Apparatus and method realizing improved concepts for TCX LTP 有权
公开(公告)号：US09997163B2
公开(公告)日：2018-06-12
申请号：US14973727
申请日：2015-12-18
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Michael Schnabel , Goran Markovic , Ralph Sperschneider , Jeremie Lecomte , Christian Helmrich
IPC分类号： G10L19/00 , G06F17/00 , G10L11/00 , G10L19/005 , G10L19/06 , G10L19/002 , G10L19/012 , G10L19/083 , G10L19/12 , G10L19/07 , G10L19/22 , G10L19/09 , G10L19/02
CPC分类号： G10L19/005 , G10L19/002 , G10L19/012 , G10L19/0212 , G10L19/06 , G10L19/07 , G10L19/083 , G10L19/09 , G10L19/12 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided. The apparatus includes a receiving interface, a delay buffer and a sample processor for processing the selected audio signal samples to obtain reconstructed audio signal samples of the reconstructed audio signal. The sample selector is configured to select, if a current frame is received by the receiving interface and if the current frame being received by the receiving interface is not corrupted, the plurality of selected audio signal samples from the audio signal samples being stored in the delay buffer depending on a pitch lag information being included by the current frame.

9. 发明授权

US09978377B2 Apparatus and method for generating an adaptive spectral shape of comfort noise 有权
公开(公告)号：US09978377B2
公开(公告)日：2018-05-22
申请号：US14973724
申请日：2015-12-18
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Michael Schnabel , Goran Markovic , Ralph Sperschneider , Jeremie Lecomte , Christian Helmrich
IPC分类号： G10L19/00 , G10L19/005 , G10L19/06 , G10L19/002 , G10L19/012 , G10L19/083 , G10L19/12 , G10L19/07 , G10L19/22 , G10L19/09 , G10L19/02
CPC分类号： G10L19/005 , G10L19/002 , G10L19/012 , G10L19/0212 , G10L19/06 , G10L19/07 , G10L19/083 , G10L19/09 , G10L19/12 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided, having: a receiving interface for receiving one or more frames, a coefficient generator, and a signal reconstructor. The coefficient generator is configured to determine one or more first audio signal coefficients, and one or more noise coefficients. Moreover, the coefficient generator is configured to generate one or more second audio signal coefficients, depending on the one or more first audio signal coefficients and depending on the one or more noise coefficients. The audio signal reconstructor is configured to reconstruct a first portion of the reconstructed audio signal depending on the one or more first audio signal coefficients and the audio signal reconstructor is configured to reconstruct a second portion of the reconstructed audio signal depending on the one or more second audio signal coefficients, if the current frame is not received by the receiving interface or if the current frame being received by the receiving interface is corrupted.

10. 发明授权

US09947329B2 Apparatus and method for encoding or decoding an audio signal using a transient-location dependent overlap 有权
公开(公告)号：US09947329B2
公开(公告)日：2018-04-17
申请号：US14830484
申请日：2015-08-19
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Christian Helmrich , Jeremie Lecomte , Goran Markovic , Markus Schnell , Bernd Edler , Stefan Reuschl
IPC分类号： G10L19/02 , G10L19/025 , H04N19/172 , H04N19/176 , H04N19/44 , G10L19/022
CPC分类号： G10L19/025 , G10L19/0212 , G10L19/022 , H04N19/172 , H04N19/176 , H04N19/44
摘要： An apparatus for encoding an audio or image signal, includes: a controllable windower for windowing the audio or image signal to provide the sequence of blocks of windowed samples; a converter for converting the sequence of blocks of windowed samples into a spectral representation including a sequence of frames of spectral values; a transient location detector for identifying a location of a transient within a transient look-ahead region of a frame; and a controller for controlling the controllable windower to apply a specific window having a specified overlap length to the audio or image signal in response to an identified location of the transient, wherein the controller is configured to select the specific window from a group of at least three windows, wherein the specific window is selected based on the transient location.

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