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71. 发明申请

US20160104487A1 APPARATUS AND METHOD REALIZING A FADING OF AN MDCT SPECTRUM TO WHITE NOISE PRIOR TO FDNS APPLICATION 有权
标题翻译：设备和方法在FDIS应用程序之前实现了对白噪声的MDCT谱的衰减
公开(公告)号：US20160104487A1
公开(公告)日：2016-04-14
申请号：US14973722
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： G10L19/005 , G10L19/06
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 includes a receiving interface for receiving one or more frames comprising information on a plurality of audio signal samples of an audio signal spectrum of the encoded audio signal, and a processor for generating the reconstructed audio signal. The processor is configured to generate the reconstructed audio signal by fading a modified spectrum to a target spectrum, if a current frame is not received by the receiving interface or if the current frame is received by the receiving interface but is corrupted, wherein the modified spectrum includes a plurality of modified signal samples, wherein, for each of the modified signal samples of the modified spectrum, an absolute value of the modified signal sample is equal to an absolute value of one of the audio signal samples of the audio signal spectrum.
摘要翻译：用于解码编码音频信号以获得重构音频信号的装置包括：接收接口，用于接收一个或多个帧，包括关于编码音频信号的音频信号频谱的多个音频信号样本的信息;以及处理器，用于生成重建音频信号。处理器被配置为如果当前帧没有被接收接口接收或者当前帧被接收接口接收而被损坏时，通过将修改的频谱衰减到目标频谱来生成重构音频信号，其中修改频谱包括多个经修改的信号样本，其中，对于修改频谱的每个经修改的信号样本，修改的信号样本的绝对值等于音频信号频谱的音频信号样本之一的绝对值。

72. 发明申请

US20160078878A1 APPARATUS AND METHOD FOR SELECTING ONE OF A FIRST ENCODING ALGORITHM AND A SECOND ENCODING ALGORITHM USING HARMONICS REDUCTION 有权
标题翻译：用于选择第一编码算法中的一个的装置和方法以及使用谐波减少的第二编码算法
公开(公告)号：US20160078878A1
公开(公告)日：2016-03-17
申请号：US14947746
申请日：2015-11-20
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Emmanuel RAVELLI , Markus MULTRUS , Stefan DOEHLA , Bernhard GRILL , Manuel JANDER
IPC分类号： G10L19/22 , G10L19/032 , G10L19/26 , G10L19/09 , G10L19/12
CPC分类号： G10L19/22 , G10L19/0212 , G10L19/032 , G10L19/08 , G10L19/09 , G10L19/12 , G10L19/265 , G10L2019/0002 , G10L2019/0011
摘要： An apparatus for selecting one of a first encoding algorithm and a second encoding algorithm includes a filter configured to receive the audio signal, to reduce the amplitude of harmonics in the audio signal and to output a filtered version of the audio signal. First and second estimators are provided for estimating first and second quality measures in the form of SNRs of segmented SNRs associated with the first and second encoding algorithms without actually encoding and decoding the portion of the audio signal using the first and second encoding algorithms. A controller is provided for selecting the first encoding algorithm or the second encoding algorithm based on a comparison between the first quality measure and the second quality measure.
摘要翻译：用于选择第一编码算法和第二编码算法之一的装置包括被配置为接收音频信号的滤波器，以减小音频信号中的谐波的幅度并输出音频信号的滤波版本。提供了第一和第二估计器，用于以与第一和第二编码算法相关联的分段SNR的SNR的形式估计第一和第二质量度量，而不使用第一和第二编码算法实际编码和解码音频信号的一部分。提供控制器，用于基于第一质量测量和第二质量测量之间的比较来选择第一编码算法或第二编码算法。

73. 发明授权

US09275650B2 Hybrid audio encoder and hybrid audio decoder which perform coding or decoding while switching between different codecs 有权
标题翻译：混合音频编码器和混合音频解码器，其在不同编解码器之间切换时执行编码或解码
公开(公告)号：US09275650B2
公开(公告)日：2016-03-01
申请号：US13703044
申请日：2011-06-14
申请人： Tomokazu Ishikawa , Takeshi Norimatsu , Haishan Zhong , Kok Seng Chong , Huan Zhou
发明人： Tomokazu Ishikawa , Takeshi Norimatsu , Haishan Zhong , Kok Seng Chong , Huan Zhou
IPC分类号： G10L19/02 , G10L19/04 , G10L19/107 , G10L19/20 , G10L19/022
CPC分类号： G10L19/04 , G10L19/0212 , G10L19/022 , G10L19/107 , G10L19/20
摘要： A new hybrid audio decoder and a new hybrid audio encoder having block switching for speech signals and audio signals are provided. Currently, very low bitrate audio coding methods for speech and audio signals are proposed. These audio coding methods cause very long delays. Generally, in coding an audio signal, an algorithm delay tends to be long to achieve higher frequency resolution. In coding a speech signal, the delay needs to be reduced because the speech signal is used for telecommunication. To balance fine coding quality for speech and audio input signals with very low bitrate, a combination of a low delay filter bank like AAC-ELD and a CELP coding method is provided.
摘要翻译：提供了一种新的混合音频解码器和具有用于语音信号和音频信号的块切换的新的混合音频编码器。目前，提出了用于语音和音频信号的非常低的比特率音频编码方法。这些音频编码方法造成很长的延迟。通常，在对音频信号进行编码时，算法延迟往往很长以达到更高的频率分辨率。在对语音信号进行编码时，由于语音信号用于通信，所以需要减小延迟。为了平衡具有非常低的比特率的语音和音频输入信号的精细编码质量，提供了诸如AAC-ELD的低延迟滤波器组和CELP编码方法的组合。

74. 发明授权

US09263057B2 Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs 有权
公开(公告)号：US09263057B2
公开(公告)日：2016-02-16
申请号：US14538728
申请日：2014-11-11
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
IPC分类号： G10L21/00 , G10L21/02 , G10L19/00 , G10L21/04 , G10L19/002 , G10L19/028 , G10L19/022 , G10L19/032 , G10L21/043 , G10L25/90 , G10L19/26
CPC分类号： G10L21/04 , G10L19/002 , G10L19/0212 , G10L19/022 , G10L19/028 , G10L19/032 , G10L19/265 , G10L21/043 , G10L25/90
摘要： An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.

75. 发明申请

US20160027446A1 Stereo Audio Encoder and Decoder 有权
标题翻译：立体声音频编码器和解码器
公开(公告)号：US20160027446A1
公开(公告)日：2016-01-28
申请号：US14781712
申请日：2014-04-04
申请人： DOLBY INTERNATIONAL AB
发明人： Heiko PURNHAGEN , Kristofer KJOERLING
IPC分类号： G10L19/008 , G10L25/06 , G10L19/02 , H04S1/00
CPC分类号： G10L19/06 , G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/167 , G10L19/265 , G10L25/06 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： The present disclosure provides methods, devices and computer program products for encoding and decoding a stereo audio signal based on an input signal. According to the disclosure, a hybrid approach of using both parametric stereo coding and a discrete representation of the stereo audio signal is used which may improve the quality of the encoded and decoded audio for certain bitrates.
摘要翻译：本公开提供了用于基于输入信号对立体声音频信号进行编码和解码的方法，设备和计算机程序产品。根据本公开，使用使用参数立体声编码和立体声音频信号的离散表示的混合方法，其可以提高某些比特率的编码和解码的音频的质量。

76. 发明申请

US20150380001A1 MDCT-BASED COMPLEX PREDICTION STEREO CODING 有权
标题翻译：基于MDCT的复杂预测立体声编码
公开(公告)号：US20150380001A1
公开(公告)日：2015-12-31
申请号：US14793297
申请日：2015-07-07
申请人： DOLBY INTERNATIONAL AB
发明人： Heiko Purnhagen , Pontus Carlsson , Lars Villemoes
IPC分类号： G10L19/008 , H04S3/00 , G10L19/06
CPC分类号： G10L19/008 , G10L19/0212 , G10L19/06 , G10L19/167 , G10L25/12 , H04S3/008 , H04S2400/01
摘要： The invention provides methods and devices for stereo encoding and decoding using complex prediction in the frequency domain. In one embodiment, a decoding method, for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels, comprises the upmixing steps of: (i) computing a second frequency-domain representation of a first input channel; and (ii) computing an output channel on the basis of the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The upmixing can be suspended responsive to control data.
摘要翻译：本发明提供使用频域中的复数预测的立体声编码和解码的方法和装置。在一个实施例中，一种用于从由复数预测编码编码的输入立体声信号中获得输出立体声信号并包括两个输入声道的第一频域表示的解码方法包括上混合步骤：（i）计算第二频率 - 第一输入通道的域表示; 以及（ii）基于第一输入通道的第一和第二频域表示，第二输入通道的第一频域表示和复数预测系数来计算输出通道。响应于控制数据可以暂停上混。

77. 发明授权

US09224398B2 Compressed sampling audio apparatus 有权
标题翻译：压缩采样音频设备
公开(公告)号：US09224398B2
公开(公告)日：2015-12-29
申请号：US13807728
申请日：2010-07-01
申请人： Juha Petteri Ojanpera
发明人： Juha Petteri Ojanpera
IPC分类号： G10L19/00 , G10L19/008 , G10L19/02 , H03M7/30
CPC分类号： G10L19/00 , G10L19/008 , G10L19/0212 , H03M7/30
摘要： Apparatus comprising at least one processor and at least one memory including computer code, the at least one memory and the computer code configured to with the at least one processor cause the apparatus to at least perform: transforming an audio signal into a sparse domain signal, the sparse domain signal representing the audio signal; transforming the sparse domain signal into a measurement domain signal; determining a sampling pattern dependent on the measurement domain signal; and measuring the measurement domain signal dependent on the sampling pattern.
摘要翻译：包括至少一个处理器和包括计算机代码的至少一个存储器的装置，所述至少一个存储器和被配置为与所述至少一个处理器相关联的所述计算机代码使所述装置至少执行：将音频信号变换为稀疏域信号，表示音频信号的稀疏域信号; 将稀疏域信号转换成测量域信号; 确定取决于测量域信号的采样模式; 并根据取样模式测量测量域信号。

78. 发明授权

US09177562B2 Speech signal encoding method and speech signal decoding method 有权
标题翻译：语音信号编码方法和语音信号解码方法
公开(公告)号：US09177562B2
公开(公告)日：2015-11-03
申请号：US13989196
申请日：2011-11-23
申请人： Gyu Hyeok Jeong , Jong Ha Lim , Hye Jeong Jeon , In Gyu Kang , Lag Young Kim
发明人： Gyu Hyeok Jeong , Jong Ha Lim , Hye Jeong Jeon , In Gyu Kang , Lag Young Kim
IPC分类号： G10L19/00 , G10L19/02 , G10L19/022
CPC分类号： G10L19/0019 , G10L19/0212 , G10L19/022
摘要： A speech signal encoding method and a speech signal decoding method are provided. The speech signal encoding method includes the steps of specifying an analysis frame in an input signal; generating a modified input based on the analysis frame; applying a window to the modified input; generating a transform coefficient by performing an MDCT (Modified Discrete Cosine Transform) on the modified input to which the window has been applied; and encoding the transform coefficient. The modified input includes the analysis frame and a self replication of all or a part of the analysis frame.
摘要翻译：提供语音信号编码方法和语音信号解码方法。语音信号编码方法包括以下步骤：在输入信号中指定分析帧; 基于分析帧生成修改后的输入; 对修改的输入应用窗口; 通过对已经应用了窗口的修改的输入执行MDCT（Modified Discrete Cosine Transform，修正离散余弦变换）来生成变换系数; 并对变换系数进行编码。经修改的输入包括分析框架和全部或部分分析框架的自我复制。

79. 发明申请

US20150287417A1 APPARATUS AND METHOD FOR ENCODING AND DECODING AN ENCODED AUDIO SIGNAL USING TEMPORAL NOISE/PATCH SHAPING 审中-公开
标题翻译：使用时间噪声/调整形状编码和解码编码音频信号的装置和方法
公开(公告)号：US20150287417A1
公开(公告)日：2015-10-08
申请号：US14680743
申请日：2015-04-07
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Sascha DISCH , Frederik NAGEL , Ralf GEIGER , Balaji Nagendran THOSHKAHNA , Konstantin SCHMIDT , Stefan BAYER , Christian NEUKAM , Bernd EDLER , Christian HELMRICH
IPC分类号： G10L19/02
CPC分类号： G10L21/0388 , G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L25/06 , H04S1/007
摘要： An apparatus for decoding an encoded audio signal, includes: a spectral domain audio decoder for generating a first decoded representation of a first set of first spectral portions being spectral prediction residual values; a frequency regenerator for generating a reconstructed second spectral portion using a first spectral portion of the first set of first spectral portions, wherein the reconstructed second spectral portion additionally includes spectral prediction residual values; and an inverse prediction filter for performing an inverse prediction over frequency using the spectral residual values for the first set of first spectral portions and the reconstructed second spectral portion using prediction filter information included in the encoded audio signal.
摘要翻译：一种用于解码编码音频信号的装置，包括：频域音频解码器，用于产生第一组第一频谱部分的第一解码表示，作为频谱预测残差值; 频率再生器，用于使用第一组第一频谱部分的第一频谱部分来产生重构的第二频谱部分，其中重建的第二频谱部分另外包括频谱预测残差值; 以及逆预测滤波器，用于使用包括在编码音频信号中的预测滤波器信息，使用第一组第一频谱部分和重建的第二频谱部分的频谱残差来执行频率上的反向预测。

80. 发明授权

US09153240B2 Transform coding of speech and audio signals 有权
标题翻译：转换语音和音频信号的编码
公开(公告)号：US09153240B2
公开(公告)日：2015-10-06
申请号：US13939931
申请日：2013-07-11
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Manuel Briand , Anisse Taleb
IPC分类号： G10L19/02 , G10L19/035
CPC分类号： G10L19/0204 , G10L19/0212 , G10L19/035
摘要： In a method of perceptual transform coding of audio signals in a telecommunication system, performing the steps of determining transform coefficients representative of a time to frequency transformation of a time segmented input audio signal; determining a spectrum of perceptual sub-bands for said input audio signal based on said determined transform coefficients; determining masking thresholds for each said sub-band based on said determined spectrum; computing scale factors for each said sub-band based on said determined masking thresholds, and finally adapting said computed scale factors for each said sub-band to prevent energy loss for perceptually relevant sub-bands.
摘要翻译：在电信系统中对音频信号的感知变换编码的方法中，执行以下步骤：确定表示时间分段输入音频信号的时间到频率变换的变换系数; 基于所述确定的变换系数确定所述输入音频信号的感知子带的频谱; 基于所述确定的频谱确定每个所述子带的掩蔽阈值; 基于所述确定的掩蔽阈值计算每个所述子带的比例因子，并且最后适应每个所述子带的所述计算的比例因子以防止感知相关子带的能量损失。

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