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公开(公告)号：US20230025801A1
公开(公告)日：2023-01-26
申请号：US17859801
申请日：2022-07-07
申请人： Boomcloud 360 Inc.
IPC分类号： H04S7/00 , H04S3/00 , H04S1/00 , H04R3/04 , G10L21/028
摘要： A system includes one or more computing devices that encode spatial perceptual cues into a monaural channel to generate a plurality of output channels. A computing device determines a target amplitude response for the mid and side channels of the plurality of output channels, defining a spatial perceptual associated with one or more frequency-dependent phase shifts. The computing device determines a transfer function of a single-input, multi-output allpass filter based on the target amplitude response and determines coefficients of the allpass filter based on the transfer function, and processes the monaural channel with the coefficients of the allpass filter to generate the plurality of channels having the encoded spatial perceptual cues. The allpass filter is configured to be colorless with respect to the individual output channels, allowing for the placement of spatial cues into the audio stream to be decoupled from the overall coloration of the audio.
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公开(公告)号：US20220070581A1
公开(公告)日：2022-03-03
申请号：US17454801
申请日：2021-11-12
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
摘要： Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.
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公开(公告)号：US11206486B2
公开(公告)日：2021-12-21
申请号：US16856373
申请日：2020-04-23
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
摘要： Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.
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公开(公告)号：US10757527B2
公开(公告)日：2020-08-25
申请号：US16591352
申请日：2019-10-02
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
摘要： Embodiments relate to b-chain processing for a spatially enhanced audio signal. A system includes a b-chain processor. The b-chain processor determines asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position; and generates a left output channel for the left speaker and a right output channel for the right speaker by: applying an N-band equalization to the spatially enhanced signal to adjust for the asymmetry in the frequency response; applying a delay to the spatially enhanced signal to adjust for the asymmetry in the time alignment; and applying a gain to the spatially enhanced signal to adjust for the asymmetry in the signal level.
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公开(公告)号：US20190191247A1
公开(公告)日：2019-06-20
申请号：US16151201
申请日：2018-10-03
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
摘要： Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.
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公开(公告)号：US20170230777A1
公开(公告)日：2017-08-10
申请号：US15404948
申请日：2017-01-12
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess , James Tracey , Alan Kraemer
CPC分类号： H04S7/304 , H04R3/04 , H04R3/14 , H04R5/033 , H04S1/005 , H04S3/008 , H04S2400/13 , H04S2420/07
摘要： Embodiments herein are primarily described in the context of a system, a method, and a non-transitory computer readable medium for producing a sound with enhanced spatial detectability and a crosstalk simulation. The audio processing system receives a left and right input channel of an audio input signal, and performs an audio processing to generate an output audio signal. The system generates left and right spatially enhanced signals by gain adjusting side subband components and mid subband components of the left and right input channels. The audio processing system generates left and right crosstalk channels such as by applying a filter and time delay to the left and right input channels, and mixes the spatially enhanced channels with the crosstalk channels. In some embodiments, the system includes high/low frequency enhancement channels and passthrough channels derived from the input channels, which can be mixed with the output audio signal.
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公开(公告)号：US20240365063A1
公开(公告)日：2024-10-31
申请号：US18771711
申请日：2024-07-12
申请人： Boomcloud 360 Inc.
发明人： Zachary Seldess , Joseph Mariglio
CPC分类号： H04R3/14 , H04R5/02 , H04R5/04 , H04S1/007 , H04S2400/13
摘要： Embodiments relate to audio processing for opposite facing speaker configurations that results in multiple optimal listening regions around the speakers. A system includes a left speaker and a right speaker in an opposite facing speaker configuration, and a crosstalk cancellation processor connected with the left speaker and the right speaker. The crosstalk cancellation processor applies a crosstalk cancellation to an input audio signal to generate left and right output channels. The left output channel is provided to the left speaker and the right output channel is provided to the right speaker to generate sound including multiple crosstalk cancelled listening regions that are spaced apart.
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公开(公告)号：US20240357314A1
公开(公告)日：2024-10-24
申请号：US18639767
申请日：2024-04-18
申请人： Boomcloud 360 Inc.
IPC分类号： H04S7/00 , G10L19/008 , G10L19/16 , G10L19/26 , G10L21/028 , H04R3/04 , H04S1/00 , H04S3/00
CPC分类号： H04S7/307 , G10L19/008 , G10L19/16 , G10L19/26 , G10L21/028 , H04R3/04 , H04S1/007 , H04S3/008 , H04S2400/01 , H04S2400/05 , H04S2400/13
摘要： A system includes one or more computing devices that encode spatial perceptual cues into a monaural channel to generate a plurality of output channels. A computing device determines a target amplitude response for the mid and side channels of the plurality of output channels, defining a spatial perceptual associated with one or more frequency-dependent phase shifts. The computing device determines a transfer function of a single-input, multi-output allpass filter based on the target amplitude response and determines coefficients of the allpass filter based on the transfer function, and processes the monaural channel with the coefficients of the allpass filter to generate the plurality of channels having the encoded spatial perceptual cues. The allpass filter is configured to be colorless with respect to the individual output channels, allowing for the placement of spatial cues into the audio stream to be decoupled from the overall coloration of the audio.
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公开(公告)号：US12069454B2
公开(公告)日：2024-08-20
申请号：US18144575
申请日：2023-05-08
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess , Joseph Mariglio
CPC分类号： H04R3/14 , H04R5/02 , H04R5/04 , H04S1/007 , H04S2400/13
摘要： Embodiments relate to audio processing for opposite facing speaker configurations that results in multiple optimal listening regions around the speakers. A system includes a left speaker and a right speaker in an opposite facing speaker configuration, and a crosstalk cancellation processor connected with the left speaker and the right speaker. The crosstalk cancellation processor applies a crosstalk cancellation to an input audio signal to generate left and right output channels. The left output channel is provided to the left speaker and the right output channel is provided to the right speaker to generate sound including multiple crosstalk cancelled listening regions that are spaced apart.
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公开(公告)号：US11736863B2
公开(公告)日：2023-08-22
申请号：US17454801
申请日：2021-11-12
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
摘要： Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.
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