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公开(公告)号：US11172320B1
公开(公告)日：2021-11-09
申请号：US15900874
申请日：2018-02-21
Applicant: Apple Inc.
Inventor： Soenke Pelzer , Dirk Schroeder
Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core. According to other embodiments disclosed herein, techniques may be utilized to translate simulated ray tracing results into natural-sounding reverberations by deriving and resampling spatial-time-frequency energy probability density functions that more accurately account for the laws of physics and then converting this data into a spatial impulse response function, which may then be used for realistic 3D audio reproduction, e.g., via headphones or loudspeakers.
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公开(公告)号：US20210329405A1
公开(公告)日：2021-10-21
申请号：US17360823
申请日：2021-06-28
Applicant: Apple Inc.
Inventor： Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
IPC: H04S7/00
Abstract: Processing sound in an enhanced reality environment can include generating, based on an image of a physical environment, an acoustic model of the physical environment. Audio signals captured by a microphone array, can capture a sound in the physical environment. Based on these audio signals, one or more measured acoustic parameters of the physical environment can be generated. A target audio signal can be processed using the model of the physical environment and the measured acoustic parameters, resulting in a plurality of output audio channels having a virtual sound source with a virtual location. The output audio channels can be used to drive a plurality of speakers. Other aspects are also described and claimed.
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公开(公告)号：US20240163609A1
公开(公告)日：2024-05-16
申请号：US18423933
申请日：2024-01-26
Applicant: Apple Inc.
Inventor： Tomlinson Holman , Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
CPC classification number: H04R5/027 , G10L19/167 , G10L21/0216 , H04R3/005 , H04R3/04 , H04R5/033 , H04R5/04 , G10L2021/02082
Abstract: An audio device can sense sound in a physical environment using a plurality of microphones to generate a plurality of microphone signals. Clean speech can be extracted from microphone signals. Ambience can be extracted from the microphone signals. The clean speech can be encoded at a first compression level. The ambience can be encoded at a second compression level that is higher than the first compression level. Other aspects are also described and claimed.
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公开(公告)号：US11631393B1
公开(公告)日：2023-04-18
申请号：US17469255
申请日：2021-09-08
Applicant: Apple Inc.
Inventor： Soenke Pelzer , David E. Romblom , Dirk Schroeder , Jonathan D. Sheaffer
IPC: G10K15/08
Abstract: Ray tracing is performed with sound sources and a listener position in a listening environment, to generate impulse responses associated with each of the sound sources. The impulse responses are combined to form a combined impulse response. One or more filters are determined, each corresponding to the sound sources, based on the combined impulse response and the impulse responses. Each filter serves as a correction factor that holds unique acoustic information for the sound source that the filter is associated with. The combined impulse response and the filters can be applied to one or more audio signals that contain the sound sources, resulting in audio having reverberation that is tailored to the various sound sources. Other aspects are described and claimed.
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公开(公告)号：US20210329381A1
公开(公告)日：2021-10-21
申请号：US17360825
申请日：2021-06-28
Applicant: Apple Inc.
Inventor： Tomlinson Holman , Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
Abstract: An audio device can sense sound in a physical environment using a plurality of microphones to generate a plurality of microphone signals. Clean speech can be extracted from microphone signals. Ambience can be extracted from the microphone signals. The clean speech can be encoded at a first compression level. The ambience can be encoded at a second compression level that is higher than the first compression level. Other aspects are also described and claimed.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240007820A1
公开(公告)日：2024-01-04
申请号：US18339950
申请日：2023-06-22
Applicant: Apple Inc.
Inventor： Soenke Pelzer , David E. Romblom , Kacper Kosikowski , Dirk Schroeder
IPC: H04S7/00
CPC classification number: H04S7/305
Abstract: An audio system and a method of providing a faded audio experience during a transition from a first audio experience to a second audio experience, is described. The first audio experience can include playback of an audio signal spatialized using a first space impulse response that is generated by the audio system. The second audio experience includes playback of the audio signal spatialized using a second space impulse response that is received by the audio system. The audio system generates a hybrid space impulse response based on the first space impulse response and the second space impulse response. During the transition between audio experiences, the hybrid space impulse response is used to spatialize the audio signal to create the faded audio experience. Other aspects are also described and claimed.
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公开(公告)号：US11197119B1
公开(公告)日：2021-12-07
申请号：US15900887
申请日：2018-02-21
Applicant: Apple Inc.
Inventor： Dirk Schroeder , Soenke Pelzer
Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core. According to other embodiments disclosed herein, techniques may be utilized to translate simulated ray tracing results into natural-sounding reverberations by deriving and resampling spatial-time-frequency energy probability density functions that more accurately account for the laws of physics and then converting this data into a spatial impulse response function, which may then be used for realistic 3D audio reproduction, e.g., via headphones or loudspeakers.
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公开(公告)号：US20240236610A1
公开(公告)日：2024-07-11
申请号：US18611407
申请日：2024-03-20
Applicant: Apple Inc.
Inventor： Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
IPC: H04S7/00
CPC classification number: H04S7/305 , H04S2420/01
Abstract: Processing sound in an enhanced reality environment can include generating, based on an image of a physical environment, an acoustic model of the physical environment. Audio signals captured by a microphone array, can capture a sound in the physical environment. Based on these audio signals, one or more measured acoustic parameters of the physical environment can be generated. A target audio signal can be processed using the model of the physical environment and the measured acoustic parameters, resulting in a plurality of output audio channels having a virtual sound source with a virtual location. The output audio channels can be used to drive a plurality of speakers. Other aspects are also described and claimed.
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公开(公告)号：US11956623B2
公开(公告)日：2024-04-09
申请号：US17360823
申请日：2021-06-28
Applicant: Apple Inc.
Inventor： Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
IPC: H04S7/00
CPC classification number: H04S7/305 , H04S2420/01
Abstract: Processing sound in an enhanced reality environment can include generating, based on an image of a physical environment, an acoustic model of the physical environment. Audio signals captured by a microphone array, can capture a sound in the physical environment. Based on these audio signals, one or more measured acoustic parameters of the physical environment can be generated. A target audio signal can be processed using the model of the physical environment and the measured acoustic parameters, resulting in a plurality of output audio channels having a virtual sound source with a virtual location. The output audio channels can be used to drive a plurality of speakers. Other aspects are also described and claimed.
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公开(公告)号：US11930337B2
公开(公告)日：2024-03-12
申请号：US17360825
申请日：2021-06-28
Applicant: Apple Inc.
Inventor： Tomlinson Holman , Christopher T. Eubank , Joshua D. Atkins , Soenke Pelzer , Dirk Schroeder
IPC: G10L19/16 , G10L21/0208 , G10L21/0216 , H04R3/00 , H04R3/04 , H04R5/027 , H04R5/033 , H04R5/04
CPC classification number: H04R5/027 , G10L19/167 , G10L21/0216 , H04R3/005 , H04R3/04 , H04R5/033 , H04R5/04 , G10L2021/02082 , G10L2021/02166 , H04R2420/07
Abstract: An audio device can sense sound in a physical environment using a plurality of microphones to generate a plurality of microphone signals. Clean speech can be extracted from microphone signals. Ambience can be extracted from the microphone signals. The clean speech can be encoded at a first compression level. The ambience can be encoded at a second compression level that is higher than the first compression level. Other aspects are also described and claimed.
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