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31. 发明申请

WO2023285631A1 CODING AND DECOCIDNG OF PULSE AND RESIDUAL PARTS OF AN AUDIO SIGNAL 审中-公开
公开(公告)号：WO2023285631A1
公开(公告)日：2023-01-19
申请号：PCT/EP2022/069812
申请日：2022-07-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： MARKOVIC, Goran
IPC分类号： G10L19/20 , G10L19/025 , G10L19/02 , G10L19/22 , G10L19/26
摘要： The present invention relates to an audio encoder (100, 101) for encoding an audio signal (PCMi) comprising an pulse portion (P) and a stationary portion, comprising: a pulse extractor (11,110) configured for extracting the pulse portion (P) from the audio signal (PCMi), further comprising a pulse coder (132) for encoding the extracted pulse portion (P) to acquire an encoded pulse portion (CP); wherein the pulse extractor (110) is configured to determine a spectrogram of the audio signal (PCMi) to extract the pulse portion (P), wherein the spectrogram has higher time resolution than the signal encoder (152, 156'); a signal encoder (152, 156') configured for encoding a residual (R) signal derived from the audio signal (PCMi) to acquire an encoded residual (CR) signal, the residual (R) signal being derived from the audio signal (PCMi) so that the pulse portion (P) is reduced or eliminated from the audio signal (PCMi); and an output interface (170) configured for outputting the encoded pulse portion (CP) and the encoded residual (CR) signal to provide an encoded signal.

32. 发明申请

WO2022100414A1 音频编解码方法和装置审中-公开
公开(公告)号：WO2022100414A1
公开(公告)日：2022-05-19
申请号：PCT/CN2021/125760
申请日：2021-10-22
申请人：华为技术有限公司
发明人：王卓 , 王萌 , 杜春晖 , 范泛
IPC分类号： G10L19/22 , G10L19/18
摘要：一种音频编解码方法和装置。包括:获得待编码的当前音频帧的设定码率和上一帧音频帧的最终编码方式，最终编码方式包括第一码率编码方式、第二码率编码方式、第一码率编码向第二码率编码切换编码方式或者第二码率编码向第一码率编码切换编码方式;根据设定码率和上一帧音频帧的最终编码方式确定当前音频帧的最终编码方式;根据当前音频帧的最终编码方式对当前音频帧进行编码。音频发送设备将码流信息发送给音频接收设备。解析码流信息以获得解码方式和编码码流;音频接收设备根据解码方式对编码码流进行解码以获得目标音频帧。在符合蓝牙信道对数据传输大小限制的前提下，保证音频的音质。

33. 发明申请

WO2021155460A1 SWITCHING BETWEEN STEREO CODING MODES IN A MULTICHANNEL SOUND CODEC 审中-公开
公开(公告)号：WO2021155460A1
公开(公告)日：2021-08-12
申请号：PCT/CA2021/050114
申请日：2021-02-01
申请人： VOICEAGE CORPORATION
发明人： EKSLER, Vaclav
IPC分类号： G10L19/008 , G10L19/22
摘要： A method and device for encoding a stereo sound signal comprise stereo encoders using stereo modes operating in time domain (TD), in frequency domain (FD) or in modified discrete Fourier transform (MDCT) domain. A controller controls switching between the TD, FD and MDCT stereo modes. Upon switching from one stereo mode to the other, the switching controller may (a) recalculate at least one length of down-processed/mixed signal in a current frame of the stereo sound signal, (b) reconstruct a down-processed/mixed signal and also other signals related to the other stereo mode in the current frame, (c) adapt data structures and/or memories for coding the stereo sound signal in the current frame using the other stereo mode, and/or (d) alter a TD stereo channel down-mixing to maintain a correct phase of left and right channels of the stereo sound signal. Corresponding stereo sound signal decoding method and device are described.

34. 发明申请

WO2021102193A1 METHOD AND APPARATUS FOR FORCED DURATION IN NEURAL SPEECH SYNTHESIS 审中-公开
公开(公告)号：WO2021102193A1
公开(公告)日：2021-05-27
申请号：PCT/US2020/061371
申请日：2020-11-19
申请人： APPTEK, LLC
发明人： ROSSENBACH, Nick , JIANG, Jintao , YAGHI, Mudar
IPC分类号： G10L19/012 , G10L19/022 , G10L19/06 , G10L19/16 , G10L19/22 , G10L19/26
摘要： A system and method enable one to set a target duration of a desired synthesized utterance without removing or adding spoken content. Without changing the spoken text, the voice characteristics may be kept the same or substantially the same. Silence adjustment and interpolation may be used to alter the duration while preserving speech characteristics. Speech may be translated prior to a vocoder step, pursuant to which the translated speech is constrained by the original audio duration, while mimicking the speech characteristics of the original speech.

35. 发明申请

WO2020201619A1 SPATIAL AUDIO REPRESENTATION AND ASSOCIATED RENDERING 审中-公开
公开(公告)号：WO2020201619A1
公开(公告)日：2020-10-08
申请号：PCT/FI2020/050171
申请日：2020-03-19
申请人： NOKIA TECHNOLOGIES OY
发明人： LAAKSONEN, Lasse
IPC分类号： G10L19/22 , G10L19/16 , G10L19/008 , H04S3/00 , G10L19/02 , G10L19/00
摘要： There is inter alia disclosed an apparatus for determining whether to quantise spatial audio parameters associated with a plurality of channel audio signals, wherein the spatial audio parameters are comprised in a metadata structure; quantising the spatial audio parameters in accordance with the determination; and adding to a data field in the metadata structure an indication as to whether the spatial audio parameters have been quantised.

36. 发明申请

WO2020193852A1 SOUND FIELD RELATED RENDERING 审中-公开
公开(公告)号：WO2020193852A1
公开(公告)日：2020-10-01
申请号：PCT/FI2020/050174
申请日：2020-03-19
申请人： NOKIA TECHNOLOGIES OY
发明人： LAITINEN, Mikko-Ville , VILKAMO, Juha , LAAKSONEN, Lasse
IPC分类号： G10L19/22 , H03M7/00 , G10L19/008 , G10L19/16
摘要： An apparatus comprising means configured to: obtain at least two audio signals; determine a type of the at least two audio signals; process the at least two audio signals configured to be rendered based on the determined type of the at least two audio signals.

37. 发明申请

WO2019070605A1 DECODING OF AUDIO SIGNALS 审中-公开
公开(公告)号：WO2019070605A1
公开(公告)日：2019-04-11
申请号：PCT/US2018/053799
申请日：2018-10-01
申请人： QUALCOMM INCORPORATED
发明人： CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar , ATTI, Venkatraman
IPC分类号： G10L19/008 , G10L19/22 , G10L21/038
摘要： A device includes a receiver configured to receive an inter-channel prediction gain parameter and an encoded audio signal. The encoded audio signal includes an encoded mid signal. The device also includes a decoder configured to generate a synthesized mid signal based on the encoded mid signal. The decoder is configured to generate an intermediate synthesized side signal based on the synthesized mid signal and the inter-channel prediction gain parameter. The decoder is further configured to filter the intermediate synthesized side signal to generate a synthesized side signal.

38. 发明申请

WO2017162260A1 ADAPTIVE QUANTIZATION OF WEIGHTED MATRIX COEFFICIENTS 审中-公开
标题翻译：加权矩阵系数的自适应量化
公开(公告)号：WO2017162260A1
公开(公告)日：2017-09-28
申请号：PCT/EP2016/056076
申请日：2016-03-21
申请人： HUAWEI TECHNOLOGIES CO., LTD. , SETIAWAN, Panji , SHLOMOT, Eyal
发明人： SETIAWAN, Panji , SHLOMOT, Eyal
IPC分类号： G10L19/008 , H04N19/119 , G10L19/22
摘要： The present invention relates to a method for encoding an input signal comprising signal frames into quantized bits, the method comprising generating, for each frame of the input signal (101), a signal matrix (103, 203, CovM#1, CovM#N) comprising matrix coefficients obtained from that frame, grouping the matrix coefficients of each signal matrix into a plurality of partition vectors (106, 206, v 1 1 ,..., v 1 L ), and for each partition vector (106, 206, v 1 1 ,..., v 1 L ), selecting one vector quantization scheme (VQ 1 1 , VQ 1 L ) from among a plurality of vector quantization schemes (VQ 1 1 , VQ 1 L ) and quantizing that partition vector according to the selected vector quantization scheme to obtain the quantized bits (108, 208). In an adaptive mode, the method comprising grouping differently the matrix coefficients obtained from different frames, and/or selecting different vector quantization schemes for partition vectors obtained from different frames.
摘要翻译：本发明涉及一种用于将包括信号帧的输入信号编码为量化比特的方法，该方法包括为输入信号（101）的每个帧生成信号矩阵（103,203 ，CovM＃1，CovM＃N），其包括从该帧获得的矩阵系数，将每个信号矩阵的矩阵系数分组成多个分区矢量（106,206，v1 <1> ...，v 1），并且对于每个分区矢量（106,206，v 1，...，sub 1，...，sub 1） ...，v 1），选择一个矢量量化方案（VQ <1> 1 ），（VQ <1>，VQ ^{1，...，VQ <1> > 1）并且根据所选择的矢量量化方案量化该分割矢量以获得量化位（108,208）。在自适应模式中，该方法包括对从不同帧获得的矩阵系数进行不同的分组，和/或针对从不同帧获得的分区矢量选择不同的矢量量化方案。}

39. 发明申请

WO2017125544A1 APPARATUS AND METHOD FOR MDCT M/S STEREO WITH GLOBAL ILD WITH IMPROVED MID/SIDE DECISION 审中-公开
标题翻译：具有全球ILD并具有改进的MID / SIDE决策的MDCT M / S立体声的装置和方法
公开(公告)号：WO2017125544A1
公开(公告)日：2017-07-27
申请号：PCT/EP2017/051177
申请日：2017-01-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： RAVELLI, Emmanuel , SCHNELL, Markus , DÖHLA, Stefan , JÄGERS, Wolfgang , DIETZ, Martin , HELMRICH, Christian , MARKOVIC, Goran , FOTOPOULOU, Eleni , MULTRUS, Markus , BAYER, Stefan , FUCHS, Guillaume , HERRE, Jürgen
IPC分类号： G10L19/008 , G10L19/22 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/0212 , G10L19/22
摘要： Fig. illustrates an apparatus for encoding a first channel and a second channel of an audio input signal comprising two or more channels to obtain an encoded audio signal according to an embodiment. The apparatus comprises a normalizer (110) configured to determine a normalization value for the audio input signal depending on the first channel of the audio input signal and depending on the second channel of the audio input signal, wherein the normalizer (110) is configured to determine a first channel and a second channel of a normalized audio signal by modifying, depending on the normalization value, at least one of the first channel and the second channel of the audio input signal. Moreover, the apparatus comprises an encoding unit (120) being configured to generate a processed audio signal having a first channel and a second channel, such that one or more spectral bands of the first channel of the processed audio signal are one or more spectral bands of the first channel of the normalized audio signal, such that one or more spectral bands of the second channel of the processed audio signal are one or more spectral bands of the second channel of the normalized audio signal, such that at least one spectral band of the first channel of the processed audio signal is a spectral band of a mid signal depending on a spectral band of the first channel of the normalized audio signal and depending on a spectral band of the second channel of the normalized audio signal, and such that at least one spectral band of the second channel of the processed audio signal is a spectral band of a side signal depending on a spectral band of the first channel of the normalized audio signal and depending on a spectral band of the second channel of the normalized audio signal. The encoding unit (120) is configured to encode the processed audio signal to obtain the encoded audio signal.
摘要翻译：
图。示出了根据实施例的用于编码包括两个或更多个声道的音频输入信号的第一声道和第二声道以获得编码的音频信号的设备。该装置包括：归一化器（110），被配置为根据音频输入信号的第一声道并且取决于音频输入信号的第二声道来确定音频输入信号的归一化值，其中归一化器（110）被配置为通过根据归一化值修改音频输入信号的第一声道和第二声道中的至少一个来确定归一化音频信号的第一声道和第二声道。此外，该设备包括：编码单元（120），被配置为生成具有第一信道和第二信道的经处理的音频信号，使得经处理的音频信号的第一信道的一个或多个频谱带是一个或多个频谱带，使得经处理的音频信号的第二声道的一个或多个频谱带是归一化的音频信号的第二声道的一个或多个频谱带，使得至少一个频谱带经处理的音频信号的第一声道是取决于归一化音频信号的第一声道的光谱带并取决于归一化音频信号的第二声道的光谱带的中间信号的光谱带，并且使得在处理后的音频信号的第二声道的至少一个频谱带是取决于归一化音频信号的第一声道的频带的旁侧信号的频谱带并且取决于归一化音频信号的第二声道的频谱带。编码单元（120）被配置为编码处理后的音频信号以获得编码的音频信号。

40. 发明申请

WO2016066743A1 PARAMETRIC ENCODING AND DECODING OF MULTICHANNEL AUDIO SIGNALS 审中-公开
标题翻译：多通道音频信号的参数编码和解码
公开(公告)号：WO2016066743A1
公开(公告)日：2016-05-06
申请号：PCT/EP2015/075115
申请日：2015-10-29
申请人： DOLBY INTERNATIONAL AB
发明人： PURNHAGEN, Heiko , LEHTONEN, Heidi-Maria , KLEJSA, Janusz
IPC分类号： G10L19/008 , G10L19/22 , H04S7/00
CPC分类号： H04S3/008 , G10L19/008 , G10L19/22 , H04S7/00 , H04S2400/03 , H04S2420/03
摘要： A control section (1009) receives signaling ( S ) indicating one of at least two coding formats ( F 1 , F 2 , F 3 ) of an M-channel audio signal ( L, LS, LB, TFL, TBL ), the coding formats corresponding to different partitions of the channels of the audio signal into respective first and second groups (601, 602), wherein, in the indicated coding format, first and second channels ( L 1 , L 2 ) of a downmix signal correspond to linear combinations of the first and second groups, respectively; and a decoding section (900) reconstructs the audio signal based on the downmix signal and associated upmix parameters ( α L ). In the decoding section: a decorrelation input signal ( D 1 , D 2 , D 3 ) is determined based on the downmix signal and the indicated coding format; and wet and dry upmix coefficients, controlling linear mappings of the downmix signal and a decorrelated signal, generated based on the decorrelation input signal, are determined based on the upmix parameters and the indicated coding format.
摘要翻译：控制部（1009）接收指示M声道音频信号（L，LS，LB，TFL，TBL）的至少两种编码格式（F 1，F 2，F 3）中的一种的信令（S）对应于音频信号的信道的不同分区的格式分成相应的第一和第二组（601,602），其中，在所指示的编码格式中，下混合信号的第一和第二声道（L 1，L 2）对应于线性分别组合第一组和第二组; 和解码部（900）基于下混信号和相关联的上混参数（αL）重构音频信号。在解码部分中，基于缩混信号和指示的编码格式确定解相关输入信号（D 1，D 2，D 3）并且基于上混参数和所指示的编码格式来确定基于去相关输入信号生成的下混合信号的控制线性映射和去相关信号的湿和干混合系数。

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