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公开(公告)号：US20170289686A1
公开(公告)日：2017-10-05
申请号：US15626962
申请日：2017-06-19
发明人： Christof Faller , Alexis Favrot , Peter Grosche , Yue Lang
CPC分类号： H04R5/027 , H04R1/326 , H04R1/406 , H04R3/005 , H04R5/04 , H04R2430/21 , H04R2499/11 , H04S3/00 , H04S2400/15
摘要： A microphone arrangement and a method using the microphone arrangement for recording surround sound in a mobile device, where the microphone arrangement comprises a first and a second microphone and arranged at a first distance to each other and configured to obtain a stereo signal, and comprises a third microphone configured to obtain a steering signal together with at least one of the first and second microphone or with a fourth microphone. The microphone arrangement also comprises a processor configured to separate the stereo signal into a front stereo signal and a back stereo signal based on the steering signal.
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公开(公告)号：US09699563B2
公开(公告)日：2017-07-04
申请号：US14820143
申请日：2015-08-06
发明人： Christof Faller , David Virette , Yue Lang
CPC分类号： H04R5/04 , H04R2205/021 , H04R2499/11 , H04S1/007 , H04S7/303 , H04S2420/03
摘要： The invention relates to a method for rendering a stereo audio signal over a first loudspeaker and a second loudspeaker with respect to a desired direction, the stereo audio signal comprising a first audio signal component (L) and a second audio signal component (R), the method comprising: providing a first rendering signal based on a combination of L and a first difference signal obtained based on a difference between L and R to the first loudspeaker, and providing a second rendering signal based on a combination of R and a second difference signal obtained based on the difference between L and R to the second loudspeaker, such that both difference signals are different with respect to sign and one difference signal is delayed by a delay compared to the other difference signal to define a dipole signal, wherein the delay is adapted according to the desired direction.
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公开(公告)号：US20160241986A1
公开(公告)日：2016-08-18
申请号：US15137493
申请日：2016-04-25
发明人： Yue Lang , Zhengzhong Du
CPC分类号： H04S7/307 , H04R5/033 , H04R5/04 , H04S1/002 , H04S1/005 , H04S3/004 , H04S7/306 , H04S2400/11 , H04S2400/15 , H04S2420/01
摘要： A virtual stereo synthesis method includes acquiring at least one sound input signal on a first side and at least one sound input signal on a second side, separately performing ratio processing on a preset head related transfer function (HRTF) left-ear component and a preset HRTF right-ear component of each sound input signal on the second side, to obtain a filtering function of each sound input signal on the second side, separately performing convolution filtering on each sound input signal on the second side and the filtering function of the sound input signal on the second side, to obtain the filtered signal on the second side, and synthesizing all of the sound input signals on the first side and all of the filtered signals on the second side into a virtual stereo signal where the method may alleviate a coloration effect, and reduce calculation complexity.
摘要翻译： 虚拟立体声合成方法包括获取第一侧上的至少一个声音输入信号和在第二侧上至少一个声音输入信号，分别对预设的与头部相关的传递函数（HRTF）左耳分量和预设的声音输入信号进行比率处理 在第二侧的每个声音输入信号的HRTF右耳分量，以获得第二侧的每个声音输入信号的滤波功能，对第二侧上的每个声音输入信号进行卷积滤波和声音的滤波功能 在第二侧输入信号，以获得第二侧的滤波信号，并将第一侧上的所有声音输入信号和第二侧的所有滤波信号合成到虚拟立体声信号中，该虚拟立体声信号中该方法可以减轻 着色效果，降低计算复杂度。
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公开(公告)号：US09406302B2
公开(公告)日：2016-08-02
申请号：US14144874
申请日：2013-12-31
发明人： Anisse Taleb , David Virette , Liyun Pang , Yue Lang
IPC分类号： G10L19/008 , G10L21/04 , G10L21/055 , G10L19/16
CPC分类号： G10L19/008 , G10L19/167 , G10L21/04 , G10L21/055
摘要： The invention relates to a method for processing a multi-channel audio signal which carries a plurality of audio channel signals. The method comprises determining a time-scaling position using the plurality of audio channel signals and time-scaling each audio channel signal of the plurality of audio channel signals according to the time-scaling position to obtain a plurality of time scaled audio channel signals.
摘要翻译： 本发明涉及一种用于处理携带多个音频信道信号的多声道音频信号的方法。 该方法包括使用多个音频信道信号确定时间缩放位置，并根据时间缩放位置对多个音频信道信号的每个音频信道信号进行时间缩放，以获得多个时间缩放的音频信道信号。
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公开(公告)号：US09401151B2
公开(公告)日：2016-07-26
申请号：US14102024
申请日：2013-12-10
发明人： Yue Lang , David Virette , Jianfeng Xu
IPC分类号： H04R5/00 , G10L19/008 , H04S3/00
CPC分类号： G10L19/008 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： The invention relates to a parametric audio encoder, comprising a parameter generator, the parameter generator being configured to determine a first set of encoding parameters and reference audio signal values, wherein the reference audio signal is another audio channel signal or a downmix audio signal derived from at least two audio channel signals of the plurality of multi-channel audio signals, to determine a first encoding parameter average based on the first set of encoding parameters of the audio channel signal, to determine a second encoding parameter average based on the first encoding parameter average of the audio channel signal and at least one other first encoding parameter average of the audio channel signal, and to determine the encoding parameter based on the first encoding parameter average of the audio channel signal and the second encoding parameter average of the audio channel signal.
摘要翻译： 本发明涉及一种参数音频编码器，包括参数发生器，参数发生器被配置为确定第一组编码参数和参考音频信号值，其中参考音频信号是另一个音频信道信号或从 多个多声道音频信号的至少两个音频通道信号，以基于音频通道信号的第一组编码参数来确定第一编码参数平均值，以基于第一编码参数确定第二编码参数平均值 音频信道信号的平均值和音频信道信号的至少一个其它第一编码参数平均值，并且基于音频信道信号的第一编码参数平均值和音频信道信号的第二编码参数平均值来确定编码参数 。
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公开(公告)号：US09082396B2
公开(公告)日：2015-07-14
申请号：US13744690
申请日：2013-01-18
发明人： Christof Faller , David Virette , Yue Lang , Jianfeng Xu
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： The invention relates to an audio signal synthesizer, the audio signal synthesizer comprises a transformer for transforming the down-mix audio signal into frequency domain to obtain a transformed audio signal; a signal generator for generating a first auxiliary signal, for generating a second auxiliary signal, and for generating a third auxiliary signal upon the basis of the transformed audio signal; a de-correlator for generating a first de-correlated signal, and for generating a second de-correlated signal from the third auxiliary signal, the first de-correlated signal and the second de-correlated signal being at least partly de-correlated; and a combiner for combining the first auxiliary signal with the first de-correlated signal to obtain a first audio signal, and for combining the second auxiliary signal with the second de-correlated signal to obtain the second audio signal, the first audio signal and the second audio signal forming the multi-channel audio signal.
摘要翻译： 音频信号合成器本发明涉及一种音频信号合成器，该音频信号合成器包括一个变换器，用于将混音音频信号转换成频域以获得经变换的音频信号; 信号发生器，用于产生第一辅助信号，用于产生第二辅助信号，并且用于根据经变换的音频信号产生第三辅助信号; 一个去相关器，用于产生第一去相关信号，并用于从第三辅助信号产生第二去相关信号，第一去相关信号和第二解相关信号至少部分地去相关; 以及组合器，用于将第一辅助信号与第一去相关信号组合以获得第一音频信号，并且用于将第二辅助信号与第二去相关信号组合以获得第二音频信号，第一音频信号和 形成多声道音频信号的第二音频信号。
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37.发明申请Method for Inter-Channel Difference Estimation and Spatial Audio Coding Device 有权信道间差分估计和空间音频编码装置的方法公开(公告)号：US20140164001A1
公开(公告)日：2014-06-12
申请号：US14145432
申请日：2013-12-31
发明人： Yue Lang , David Virette , Jianfeng Xu
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , H04S3/008 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： Methods and devices for a low complex inter-channel phase difference estimation are provided. A method for the estimation of inter-channel phase differences (IPDs), comprises applying a transformation from a time domain to a frequency domain to a plurality of audio channel signals, calculating a plurality of IPD values for the IPDs between at least one of the plurality of audio channel signals and a reference audio channel signal over a predetermined frequency range, each IPD value being calculated over a portion of the predetermined frequency range, calculating, for each of the plurality of IPD values, a weighted IPD value by multiplying each of the plurality of IPD values with a corresponding frequency-dependent weighting factor, and calculating an IPD range value for the predetermined frequency range by adding the plurality of weighted IPD values.
摘要翻译： 提供了用于低复杂信道间相位差估计的方法和装置。 一种用于估计信道间相位差（IPD）的方法，包括将从时域到频域的变换应用于多个音频信道信号，计算IPD中的至少一个之间的多个IPD值， 多个音频信道信号和参考音频信道信号，每个IPD值在预定频率范围的一部分上被计算，对于多个IPD值中的每一个，通过将每个IPD值乘以加权IPD值， 所述多个IPD值具有相应的频率相关加权因子，并且通过添加所述多个加权IPD值来计算所述预定频率范围的IPD范围值。
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38.发明申请DEVICE AND METHOD FOR POSTPROCESSING A DECODED MULTI-CHANNEL AUDIO SIGNAL OR A DECODED STEREO SIGNAL 有权解码多通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：US20130279702A1
公开(公告)日：2013-10-24
申请号：US13852554
申请日：2013-03-28
发明人： Yue Lang , David Virette , Lei Miao , Wenhai Wu
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , G10L21/0364
摘要： According to the invention, a device for post-processing 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 for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal, an interchannel time difference between the channel signal and the downmix signal, and a classification indication indicating a transient type of the downmix signal; and a post-processor for post-processing 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 and the interchannel time difference.
摘要翻译： 根据本发明，描述了一种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，所述至少一个信道信号是通过低比特率信号从解码的下混信号产生的， 所述装置包括：接收器，用于接收从解码的下混合信号产生的至少一个信道信号，解码的下混合信号的时间包络，信道信号和下混合信号之间的信道间时间差， 以及指示下混合信号的瞬时类型的分类指示; 以及后处理器，用于基于由各个加权因子加权的解码缩混信号的时间包，并且根据分类指示和通道间时间差，对至少一个信道信号进行后处理。
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公开(公告)号：US20130129096A1
公开(公告)日：2013-05-23
申请号：US13744690
申请日：2013-01-18
发明人： Christof Faller , David Virette , Yue Lang , Jianfeng Xu
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： The invention relates to an audio signal synthesizer, the audio signal synthesizer comprises a transformer for transforming the down-mix audio signal into frequency domain to obtain a transformed audio signal; a signal generator for generating a first auxiliary signal, for generating a second auxiliary signal, and for generating a third auxiliary signal upon the basis of the transformed audio signal; a de-correlator for generating a first de-correlated signal, and for generating a second de-correlated signal from the third auxiliary signal, the first de-correlated signal and the second de-correlated signal being at least partly de-correlated; and a combiner for combining the first auxiliary signal with the first de-correlated signal to obtain a first audio signal, and for combining the second auxiliary signal with the second de-correlated signal to obtain the second audio signal, the first audio signal and the second audio signal forming the multi-channel audio signal.
摘要翻译： 音频信号合成器本发明涉及一种音频信号合成器，该音频信号合成器包括一个变换器，用于将混音音频信号转换成频域以获得经变换的音频信号; 信号发生器，用于产生第一辅助信号，用于产生第二辅助信号，并且用于根据经变换的音频信号产生第三辅助信号; 一个去相关器，用于产生第一去相关信号，并用于从第三辅助信号产生第二去相关信号，第一去相关信号和第二解相关信号至少部分地去相关; 以及组合器，用于将第一辅助信号与第一去相关信号组合以获得第一音频信号，并且用于将第二辅助信号与第二去相关信号组合以获得第二音频信号，第一音频信号和 形成多声道音频信号的第二音频信号。
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公开(公告)号：US20130094655A1
公开(公告)日：2013-04-18
申请号：US13708611
申请日：2012-12-07
IPC分类号： G10L19/008
CPC分类号： H04S3/00 , G10L19/00 , G10L19/008
摘要： Embodiments of the present invention provide a method and an apparatus for generating a sideband residual signal. The method includes: comparing energy of a first signal input by a first sound channel with energy of a second signal input by a second sound channel; if the energy of the first signal is greater than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the first signal; and if the energy of the first signal is smaller than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the second signal. By using the method and apparatus provided in the embodiments of the present invention, it can be avoided that a monophonic quantization error has a greater impact on a signal whose energy is smaller.
摘要翻译： 本发明的实施例提供一种用于生成边带残留信号的方法和装置。 该方法包括：将通过第一声道输入的第一信号的能量与由第二声道输入的第二信号的能量进行比较; 如果第一信号的能量大于第二信号的能量，则通过向第一信号分配单声道量化误差来产生边带残差信号; 并且如果第一信号的能量小于第二信号的能量，则通过向第二信号分配单声道量化误差来产生边带残留信号。 通过使用本发明实施例中提供的方法和装置，可以避免单声道量化误差对能量较小的信号的影响较大。
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