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41. 发明授权

US09583110B2 Apparatus and method for processing a decoded audio signal in a spectral domain 有权
标题翻译：用于处理频谱域中的解码音频信号的装置和方法
公开(公告)号：US09583110B2
公开(公告)日：2017-02-28
申请号：US13966570
申请日：2013-08-14
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Guillaume Fuchs , Ralf Geiger , Markus Schnell , Emmanuel Ravelli , Stefan Doehla
IPC分类号： G10L19/00 , G10L19/012 , G10K11/16 , G10L19/005 , G10L19/12 , G10L19/03 , G10L19/22 , G10L21/0216 , G10L25/78 , G10L19/26 , G10L19/04 , G10L19/02 , G10L25/06 , G10L19/025 , G10L19/107
CPC分类号： G10L19/00 , G10K11/16 , G10L19/005 , G10L19/012 , G10L19/0212 , G10L19/025 , G10L19/03 , G10L19/04 , G10L19/107 , G10L19/12 , G10L19/22 , G10L19/26 , G10L21/0216 , G10L25/06 , G10L25/78
摘要： An apparatus for processing a decoded audio signal including a filter for filtering the decoded audio signal to obtain a filtered audio signal, a time-spectral converter stage for converting the decoded audio signal and the filtered audio signal into corresponding spectral representations, each spectral representation having a plurality of subband signals, a weighter for performing a frequency selective weighting of the filtered audio signal by a multiplying subband signals by respective weighting coefficients to obtain a weighted filtered audio signal, a subtractor for performing a subband-wise subtraction between the weighted filtered audio signal and the spectral representation of the decoded audio signal, and a spectral-time converter for converting the result audio signal or a signal derived from the result audio signal into a time domain representation to obtain a processed decoded audio signal.
摘要翻译：一种用于处理解码音频信号的装置，包括用于对解码的音频信号进行滤波以获得滤波的音频信号的滤波器，用于将解码的音频信号和滤波的音频信号转换成相应的频谱表示的时间频谱转换器级，每个频谱表示具有多个子带信号，用于通过乘法子带信号通过相应的加权系数执行经滤波的音频信号的频率选择性加权以获得加权滤波音频信号的加权器，用于在加权的滤波音频之间执行子带宽减法的减法器信号和解码音频信号的频谱表示，以及用于将结果音频信号或从结果音频信号导出的信号转换成时域表示以获得经处理的解码音频信号的频谱 - 时间转换器。

42. 发明授权

US09495971B2 Transient detector and method for supporting encoding of an audio signal 有权
标题翻译：用于支持音频信号编码的瞬态检测器和方法
公开(公告)号：US09495971B2
公开(公告)日：2016-11-15
申请号：US12673862
申请日：2008-08-25
申请人： Gustaf Ullberg , Anisse Taleb
发明人： Gustaf Ullberg , Anisse Taleb
IPC分类号： G10L19/025 , G10L19/02 , G10L25/21
CPC分类号： G10L19/025 , G10L19/0212
摘要： A transient detector (100) analyzes (110) a given frame n of the input audio signal to determine, based on audio signal characteristics of the given frame n, a transient hangover indicator for a following frame n+1, and signals (120) the determined transient hangover indicator to an associated audio encoder (10) to enable proper encoding of the following frame n+1.
摘要翻译：瞬态检测器（100）分析（110）输入音频信号的给定帧n，以基于给定帧n的音频信号特性来确定用于后续帧n + 1的瞬时宿醉指示符，以及信号（120）将所确定的瞬时停播指示符发送到相关联的音频编码器（10），以便能够对后续帧n + 1进行适当的编码。

43. 发明申请

US20160267916A1 VARIABLE-RESOLUTION PROCESSING OF FRAME-BASED DATA 审中-公开
标题翻译：基于框架数据的可变分辨率处理
公开(公告)号：US20160267916A1
公开(公告)日：2016-09-15
申请号：US15161230
申请日：2016-05-21
申请人： Digital Rise Technology Co., Ltd.
发明人： Yuli You
IPC分类号： G10L19/025 , G10L19/24 , G10L19/16
CPC分类号： G10L19/025 , G10L19/008 , G10L19/0208 , G10L19/022 , G10L19/035 , G10L19/038 , G10L19/167 , G10L19/24
摘要： Provided are systems, methods and techniques for processing frame-based data. A frame of data, an indication that a transient occurs within the frame, and a location of the transient within the frame are obtained. Based on the indication of the transient, a block size is set for the frame, thereby effectively defining a plurality of equal-sized blocks within the frame. In addition, different window functions are selected for different ones of the plurality of equal-sized blocks based on the location of the transient, and the frame of data is processed by applying the selected window functions.
摘要翻译：提供了用于处理基于帧的数据的系统，方法和技术。获得一帧数据，在帧内发生瞬态的指示，以及该帧内瞬态的位置。基于瞬态的指示，为帧设置块大小，从而有效地定义帧内的多个相等大小的块。此外，基于瞬态的位置，针对多个等大小块中的不同窗口功能选择不同的窗口功能，并且通过应用所选择的窗口功能来处理数据帧。

44. 发明授权

US09431018B2 Variable resolution processing of frame-based data 有权
标题翻译：基于帧的数据的可变分辨率处理
公开(公告)号：US09431018B2
公开(公告)日：2016-08-30
申请号：US14275960
申请日：2014-05-13
申请人： Digital Rise Technology Co., Ltd.
发明人： Yuli You
IPC分类号： G10L19/00 , G10L19/008 , G10L19/025 , G10L19/038
CPC分类号： G10L19/00 , G10L19/008 , G10L19/025 , G10L19/038
摘要： Provided are systems, methods and techniques for processing frame-based data. A frame of data, an indication that a transient occurs within the frame, and a location of the transient within the frame are obtained. Based on the indication of the transient, a block size is set for the frame, thereby effectively defining a plurality of equal-sized blocks within the frame. In addition, different window functions are selected for different ones of the plurality of equal-sized blocks based on the location of the transient, and the frame of data is processed by applying the selected window functions.
摘要翻译：提供了用于处理基于帧的数据的系统，方法和技术。获得一帧数据，在帧内发生瞬态的指示，以及该帧内瞬态的位置。基于瞬态的指示，为帧设置块大小，从而有效地定义帧内的多个相等大小的块。此外，基于瞬态的位置，针对多个等大小块中的不同窗口功能选择不同的窗口功能，并且通过应用所选择的窗口功能来处理数据帧。

45. 发明授权

US09361894B2 Audio encoding using adaptive codebook application ranges 有权
标题翻译：使用自适应码本应用范围的音频编码
公开(公告)号：US09361894B2
公开(公告)日：2016-06-07
申请号：US13895256
申请日：2013-05-15
申请人： Digital Rise Technology Co., Ltd.
发明人： Yuli You
IPC分类号： G10L19/00 , G10L19/06 , G10L21/04 , H04B1/66 , H04N7/12 , H04N11/02 , G10L19/008 , G10L19/02 , G10L19/025 , G10L19/035 , G10L19/038 , G10L19/022
CPC分类号： G10L19/025 , G10L19/008 , G10L19/0208 , G10L19/022 , G10L19/035 , G10L19/038 , G10L19/167 , G10L19/24
摘要： A low bit rate digital audio coding system includes an encoder which assigns codebooks to groups of quantization indexes based on their local properties resulting in codebook application ranges that are independent of block quantization boundaries. The invention also incorporates a resolution filter bank, or a tri-mode resolution filter bank, which is selectively switchable between high and low frequency resolution modes or high, low and intermediate modes such as when detecting transient in a frame. The result is a multichannel audio signal having a significantly lower bit rate for efficient transmission or storage. The decoder is essentially an inverse of the structure and methods of the encoder, and results in a reproduced audio signal that cannot be audibly distinguished from the original signal.
摘要翻译：低比特率数字音频编码系统包括：编码器，其基于其本地属性将码本分配给量化索引组，导致独立于块量化边界的码本应用范围。本发明还包括分辨率滤波器组或三模式分辨率滤波器组，其可以在高频和低频分辨率模式或高，低和中等模式之间选择性地切换，例如当检测到帧中的瞬态时。结果是具有用于有效传输或存储的显着较低比特率的多声道音频信号。解码器本质上是编码器的结构和方法的逆，并且导致不能与原始信号可听区分的再现音频信号。

46. 发明授权

US09293145B2 Device and method for postprocessing a decoded multi-channel audio signal or a decoded stereo signal 有权
标题翻译：用于后处理解码的多声道音频信号或解码的立体声信号的装置和方法
公开(公告)号：US09293145B2
公开(公告)日：2016-03-22
申请号：US13850655
申请日：2013-03-26
申请人： Huawei Technologies Co., Ltd.
发明人： David Virette , Yue Lang , Lei Miao , Wenhai Wu
IPC分类号： G10L19/00 , G10L19/008 , G10L21/0364 , G10L19/025
CPC分类号： G10L19/008 , G10L19/025 , G10L21/0364
摘要： According to the invention, a device (101, 101′) for postprocessing at least one channel signal of a plurality of channel signals of a multi-channel signal is described, the at least one channel signal being generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system, the device comprising: a receiver (103; 103′) for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal and a classification indication indicating a transient type of the at least one channel signal, wherein the classification indication is associated to the at least one channel signal, and a postprocessor (105; 105′) for postprocessing the at least one channel signal based on the time envelope of the decoded downmix signal weighted by a respective weighting factor and in dependence on the classification indication.
摘要翻译：根据本发明，描述了用于后处理多信道信号的多个信道信号的至少一个信道信号的装置（101,101'），所述至少一个信道信号是通过解码的下混合信号由低比特率音频编码/解码系统，该装置包括：接收机（103; 103'），用于接收从解码缩混信号产生的至少一个信道信号，解码缩混信号的时间包络和分类指示指示所述至少一个信道信号的瞬时类型，其中所述分类指示与所述至少一个信道信号相关联;以及后处理器（105; 105'），用于基于所述至少一个信道信号的时间包络对所述至少一个信道信号进行后处理解码的下混合信号由相应的加权因子加权并且依赖于分类指示。

47. 发明授权

US09275652B2 Device and method for manipulating an audio signal having a transient event 有权
公开(公告)号：US09275652B2
公开(公告)日：2016-03-01
申请号：US12921550
申请日：2009-02-17
申请人： Sascha Disch , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
发明人： Sascha Disch , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
IPC分类号： G06F17/00 , G10L21/04 , G10L19/025
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.

48. 发明授权

US09240196B2 Apparatus and method for handling transient sound events in audio signals when changing the replay speed or pitch 有权
标题翻译：当改变重放速度或音高时，用于处理音频信号中的瞬态声音事件的装置和方法
公开(公告)号：US09240196B2
公开(公告)日：2016-01-19
申请号：US13604813
申请日：2012-09-06
申请人： Sascha Disch , Frederik Nagel , Stephan Wilde
发明人： Sascha Disch , Frederik Nagel , Stephan Wilde
IPC分类号： G10L21/038 , G10L21/04 , G10L19/025
CPC分类号： G10L21/038 , G10L19/025 , G10L21/04
摘要： An apparatus for processing an audio signal has an overlap-add stage for overlapping and adding blocks of a corresponding one of a plurality of subband signals using an overlap-add-advance value being different from a block extraction advance value. The apparatus further has a transient detector for detecting a transient in the audio signal or a subband signal of the plurality of subband signals. The overlap-add stage is configured for reducing an influence of a detected transient or for not using the detected transients when adding. The apparatus further has a transient adder for adding a detected transient to a subband signal generated by the overlap/add stage. A related method for processing an audio signal has, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.
摘要翻译：用于处理音频信号的装置具有重叠添加级，用于使用与块提取提前值不同的重叠添加提前值来重叠和相加多个子带信号中的相应块的块。该装置还具有用于检测音频信号中的瞬态或多个子带信号的子带信号的瞬态检测器。重叠添加级被配置为减少检测到的瞬态的影响或者在添加时不使用检测到的瞬变。该装置还具有一个瞬态加法器，用于将检测到的瞬态值与由重叠/加法级产生的子带信号相加。用于处理音频信号的相关方法尤其是在重叠和相加时减少影响或丢弃检测到的瞬变。

49. 发明申请

US20150371650A1 Communicating Information Between Devices Using Ultra High Frequency Audio 有权
标题翻译：使用超高频音频传输设备之间的信息
公开(公告)号：US20150371650A1
公开(公告)日：2015-12-24
申请号：US14307559
申请日：2014-06-18
申请人： Google Technology Holdings LLC
发明人： Shyam Narayan , Naveen Aerrabotu , Sreenivasulu Rayanki , Yun-Ming Wang
IPC分类号： G10L19/025
CPC分类号： G10L19/025 , H04B11/00
摘要： A client device encodes data into an audio signal and communicates the audio data to an additional client device, which decodes the data from the audio signal. The data is partitioned into characters, which are subsequently partitioned into a plurality of sub-characters. Each sub-character is encoded into a frequency, and multiple frequencies that encode sub-characters are combined by the client device to generate an audio signal. Frequencies encoding sub-characters may be above 16 kilohertz, so the sub-characters are transmitted using frequencies that are inaudible to humans. The audio signal is communicated to an additional client device, which decodes frequencies from the audio signal to sub-characters, which are then combined into characters by the additional client device to generate the data.
摘要翻译：客户端设备将数据编码成音频信号，并将音频数据传送到额外的客户端设备，该客户端设备对来自音频信号的数据进行解码。将数据划分成字符，随后将其划分为多个子字符。每个子字符被编码成一个频率，并且编码子字符的多个频率由客户端设备组合以产生音频信号。编码子字符的频率可能高于16千赫兹，因此子字符使用人类听不到的频率进行传输。音频信号被传送到另外的客户端设备，其将频率从音频信号解码为子字符，然后由附加客户端设备将其组合成字符以生成数据。

50. 发明授权

US08942988B2 Efficient temporal envelope coding approach by prediction between low band signal and high band signal 有权
标题翻译：低频信号与高频信号之间的预测有效的时间包络编码方法
公开(公告)号：US08942988B2
公开(公告)日：2015-01-27
申请号：US13625874
申请日：2012-09-25
申请人： Huawei Technologies Co., Ltd.
发明人： Yang Gao
IPC分类号： G10L19/00 , G10L19/02 , G10L19/025 , G10L19/002 , G10L19/04
CPC分类号： G10L19/0204 , G10L19/002 , G10L19/025 , G10L19/04
摘要： This invention provides a more efficient way to quantize temporal envelope shaping of high band signal by benefiting from energy relationship between low band signal and high band signal; if low band signal is well coded or it is coded with time domain codec such as CELP, temporal envelope shaping information of low band signal can be used to predict temporal envelope shaping of high band signal; the temporal envelope shaping prediction can bring significant saving of bits to precisely quantize temporal envelope shaping of high band signal. This prediction approach can be combined with other specific approach to further increase the efficiency and save mores bits.
摘要翻译：本发明通过受益于低频带信号与高频带信号之间的能量关系，提供了一种更高效的量化高频带信号时间包络整形的方法; 如果低频带信号被良好编码，或者用诸如CELP的时域编解码器编码，则可以使用低频带信号的时间包络整形信息来预测高频带信号的时间包络整形; 时间包络整形预测可以显着节省位以精确量化高频带信号的时间包络整形。这种预测方法可以与其他具体方法结合起来，以进一步提高效率并节省毛利位。

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