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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
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , David Virette , Yue Lang
CPC classification number: H04R5/04 , H04R2205/021 , H04R2499/11 , H04S1/007 , H04S7/303 , H04S2420/03
Abstract: 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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Patent Agency Ranking
公开(公告)号：US09082396B2
公开(公告)日：2015-07-14
申请号：US13744690
申请日：2013-01-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , David Virette , Yue Lang , Jianfeng Xu
IPC: G10L19/008
CPC classification number: G10L19/008
Abstract: 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.
Abstract translation: 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：US20130129096A1
公开(公告)日：2013-05-23
申请号：US13744690
申请日：2013-01-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Christof Faller , David Virette , Yue Lang , Jianfeng Xu
IPC: G10L19/008
CPC classification number: G10L19/008
Abstract: 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.
Abstract translation: 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：US10154345B2
公开(公告)日：2018-12-11
申请号：US15626962
申请日：2017-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , Alexis Favrot , Peter Grosche , Yue Lang
Abstract: 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：US09961474B2
公开(公告)日：2018-05-01
申请号：US15362275
申请日：2016-11-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , Alexis Favrot , Yue Lang , Peter Grosche
CPC classification number: H04S7/306 , H04S1/002 , H04S3/008 , H04S2420/01
Abstract: The disclosure is based on the finding that acoustic near-field transfer functions indicating acoustic near-field propagation channels between loudspeakers and ears of a listener can be employed to pre-process audio signals. Therefore, acoustic near-field distortions of the audio signals can be mitigated. The pre-processed audio signals can be presented to the listener using a wearable frame, wherein the wearable frame comprises the loudspeakers for audio presentation. The disclosure can allow for a high quality rendering of audio signals as well as a high listening comfort for the listener. The disclosure can provide the following advantages. By means of a loudspeaker selection as a function of a spatial audio source direction, cues related to the listener's ears can be generated, making the approach more robust with regard to front/back confusion. The approach can further be extended to an arbitrary number of loudspeaker pairs.
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公开(公告)号：US20160037260A1
公开(公告)日：2016-02-04
申请号：US14820143
申请日：2015-08-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Christof Faller , David Virette , Yue Lang
CPC classification number: H04R5/04 , H04R2205/021 , H04R2499/11 , H04S1/007 , H04S7/303 , H04S2420/03
Abstract: 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 Land 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.
Abstract translation: 本发明涉及一种用于相对于期望方向在第一扬声器和第二扬声器上渲染立体声音频信号的方法，所述立体声音频信号包括第一音频信号分量（L）和第二音频信号分量（R） 该方法包括：基于Land的组合，将基于L和R之间的差值获得的第一差分信号提供给第一扬声器，并且基于R和第二差分信号的组合提供第二渲染信号 基于与第二扬声器的L和R之间的差异获得，使得两个差分信号相对于符号是不同的，并且一个差分信号与另一个差分信号相比延迟了一个延迟，以限定偶极子信号，其中延迟是 根据所需的方向进行调整。
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