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公开(公告)号：US10932081B1
公开(公告)日：2021-02-23
申请号：US16548645
申请日：2019-08-22
发明人： Nikunj Raghuvanshi , Keith William Godin , John Michael Snyder , Chakravarty Reddy Alla Chaitanya
摘要： The description relates to rendering directional sound. One implementation includes receiving directional impulse responses corresponding to a scene. The directional impulse responses can correspond to multiple sound source locations and a listener location in the scene. The implementation can also include encoding the directional impulse responses to obtain encoded departure direction parameters for individual sound source locations. The implementation can also include outputting the encoded departure direction parameters, the encoded departure direction parameters providing sound departure directions from the individual sound source locations for rendering of sound.
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公开(公告)号：US10602298B2
公开(公告)日：2020-03-24
申请号：US16103702
申请日：2018-08-14
发明人： Nikunj Raghuvanshi , John Snyder
摘要： The description relates to parametric directional propagation for sound modeling and rendering. One implementation includes receiving virtual reality space data corresponding to a virtual reality space. The implementation can include using the virtual reality space data to simulate directional impulse responses for initial sounds emanating from multiple moving sound sources and arriving at multiple moving listeners. The implementation can include using the virtual reality space data to simulate directional impulse responses for sound reflections in the virtual reality space. The directional impulse responses can be encoded and used to render sound that accounts for a geometry of the virtual reality space.
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公开(公告)号：US20170055075A1
公开(公告)日：2017-02-23
申请号：US15345465
申请日：2016-11-07
发明人： Desney S. Tan , Daniel Morris , Andrew D. Wilson , Yong Rui , Nikunj Raghuvanshi , Jeannette M. Wing
CPC分类号： H04R29/00 , H04M1/72558 , H04R3/04 , H04R5/04 , H04R27/00 , H04R2227/005 , H04S7/301 , H04W4/023
摘要： Technologies pertaining to calibration of filters of an audio system are described herein. A mobile computing device is configured to compute values for respective filters, such as equalizer filters, and transmit the values to a receiver device in the audio system. The receiver device causes audio to be emitted from a speaker based upon the values for the filters.
摘要翻译： 本文描述了关于音频系统的滤波器的校准的技术。 移动计算设备被配置为计算各个滤波器的值，例如均衡器滤波器，并且将值发送到音频系统中的接收机设备。 接收机设备基于滤波器的值使扬声器发出音频。
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4.发明授权Parametric wave field coding for real-time sound propagation for dynamic sources 有权用于动态源的实时声音传播的参数波场编码公开(公告)号：US09510125B2
公开(公告)日：2016-11-29
申请号：US14311208
申请日：2014-06-20
CPC分类号： H04S7/30 , G10K15/02 , G10L19/00 , H04S2420/13
摘要： The techniques discussed herein may facilitate real-time computation and playback of a propagated signal(s) perceived at a listener location in a three-dimensional environment in response to reception of a desired anechoic signal at a source location in the three-dimensional environment. The propagated audio realistically accounts for dynamic signal sources, dynamic listeners, and effects caused by the geometry and composition of the three-dimensional environment. The techniques may parameterize impulse response(s) of the environment and convolve the anechoic signal with canonical filters at run-time in a manner that respects the parameters of the parameterized impulse response(s). The techniques also provide for real-time computation and playback of a propagated audio signal perceived at a listener location in a virtual three-dimensional environment responsive to generation of source audio signals generated at multiple source locations in the virtual three-dimensional environment.
摘要翻译： 本文讨论的技术可以有助于响应于在三维环境中的源位置处接收期望的消声信号，在三维环境中在收听者位置处感知的传播信号的实时计算和回放。 传播的音频真实地解释了由三维环境的几何和组成引起的动态信号源，动态听众和影响。 这些技术可以参数化环境的脉冲响应，并且以运行时以规范的脉冲响应的参数的方式将消声信号与规范滤波器进行卷积。 这些技术还提供对在虚拟三维环境中的收听者位置感知的传播音频信号的实时计算和回放，以响应于在虚拟三维环境中的多个源位置处生成的源音频信号的产生。
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公开(公告)号：US11877143B2
公开(公告)日：2024-01-16
申请号：US17565878
申请日：2021-12-30
IPC分类号： H04S7/00
CPC分类号： H04S7/305 , H04S7/303 , H04S2400/01 , H04S2420/01
摘要： The description relates to representing acoustic characteristics of real or virtual scenes. One method includes generating directional impulse responses for a scene. The directional impulse responses can correspond to sound departing from multiple sound source locations and arriving at multiple listener locations in the scene. The method can include processing the directional impulse responses to obtain coherent sound signals and incoherent sound signals. The method can also include encoding first perceptual acoustic parameters from the coherent sound signals and second perceptual acoustic parameters from the incoherent sound signals, and outputting the encoded first perceptual acoustic parameters and the encoded second perceptual acoustic parameters.
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公开(公告)号：US20220377485A1
公开(公告)日：2022-11-24
申请号：US17307694
申请日：2021-05-04
发明人： Nikunj Raghuvanshi
IPC分类号： H04S7/00
摘要： The description relates to modeling acoustic effects in scenes with dynamic portals. One implementation includes obtaining a representation of a scene having a plurality of portals and simulating sound travel in the scene using a plurality of probes deployed in the scene. The implementation also includes determining acoustic parameters for initial sound traveling between respective probes based at least on the simulating. The implementation also includes identifying one or more intercepted portals in the scene that are intercepted by a particular initial sound path from a particular source location to a particular listener location, using particular acoustic parameters for the particular source location and the particular listener location.
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公开(公告)号：US10911885B1
公开(公告)日：2021-02-02
申请号：US16780326
申请日：2020-02-03
发明人： Michael George Chemistruck , Nikunj Raghuvanshi , Kyle Robert Storck , Noel Richard Cross , Hakon Strande , Travis Joseph Fodor , Keith William Godin , Ashutosh Vidyadhar Tatake , Jonathan G Paulovich
摘要： A mobile device implemented method provides audio from a virtual audio source in an augmented reality view of a scene. The method includes operations of sending scene identification data to a server storing precomputed acoustic parameters for multiple scenes, receiving precomputed acoustic parameters corresponding to the scene, aligning the view to register the audio to the augmented reality view of the scene, and rendering and playing the audio using the obtained acoustic parameters.
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公开(公告)号：US11412340B2
公开(公告)日：2022-08-09
申请号：US17152375
申请日：2021-01-19
发明人： Nikunj Raghuvanshi , Keith William Godin , John Michael Snyder , Chakravarty Reddy Alla Chaitanya
摘要： The description relates to rendering directional sound. One implementation includes receiving directional impulse responses corresponding to a scene. The directional impulse responses can correspond to multiple sound source locations and a listener location in the scene. The implementation can also include encoding the directional impulse responses to obtain encoded departure direction parameters for individual sound source locations. The implementation can also include outputting the encoded departure direction parameters, the encoded departure direction parameters providing sound departure directions from the individual sound source locations for rendering of sound.
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公开(公告)号：US10341857B2
公开(公告)日：2019-07-02
申请号：US15879137
申请日：2018-01-24
发明人： Yong Rui , Daniel Morris , Andrew D. Wilson , Nikunj Raghuvanshi , Desney S. Tan , Jeannette M. Wing
摘要： A privacy preserving sensor apparatus is described herein. The privacy preserving sensor apparatus includes a microphone that is configured to output a signal that is indicative of audio in an environment. The privacy preserving sensor apparatus further includes feature extraction circuitry integrated in the apparatus with the microphone, the feature extraction circuitry configured to extract features from the signal output by the microphone that are usable to detect occurrence of an event in the environment, wherein the signal output by the microphone is unable to be reconstructed based solely upon the features.
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公开(公告)号：US10123140B2
公开(公告)日：2018-11-06
申请号：US15345465
申请日：2016-11-07
发明人： Desney S. Tan , Daniel Morris , Andrew D. Wilson , Yong Rui , Nikunj Raghuvanshi , Jeannette M. Wing
摘要： Technologies pertaining to calibration of filters of an audio system are described herein. A mobile computing device is configured to compute values for respective filters, such as equalizer filters, and transmit the values to a receiver device in the audio system. The receiver device causes audio to be emitted from a speaker based upon the values for the filters.
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