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1. 发明授权

US11032644B2 Subband spatial and crosstalk processing using spectrally orthogonal audio components 有权
公开(公告)号：US11032644B2
公开(公告)日：2021-06-08
申请号：US16983827
申请日：2020-08-03
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
IPC分类号： H04R3/04 , H04R3/14 , H04S7/00 , H04R5/04
摘要： A system processes an audio signal using spectrally orthogonal sound components. The system includes a circuitry that generates a mid component and a side component from a left channel and a right channel of the audio signal. The circuitry generates a hyper mid component including spectral energy of the side component removed from spectral energy of the mid component, and generate a residual mid component including spectral energy of the hyper mid component removed from the spectral energy of the mid component. The circuitry filters subbands of the residual mid component, such as to apply a subband spatial processing. The circuitry generates a left output channel and a right output channel using the filtered subbands of the residual mid component.

2. 发明授权

US11006216B2 Nonlinear adaptive filterbanks for psychoacoustic frequency range extension 有权
公开(公告)号：US11006216B2
公开(公告)日：2021-05-11
申请号：US16986792
申请日：2020-08-06
申请人： Boomcloud 360, Inc.
发明人： Joseph Anthony Mariglio, III
IPC分类号： H04R3/04 , G06F3/16 , H04R3/00
摘要： A system includes a circuitry that provides for psychoacoustic frequency range extension for a speaker. The circuitry generates quadrature components from an audio channel, and generates rotated spectral quadrature components by applying a forward transformation that rotates a spectrum of the quadrature components from a standard basis to a rotated basis. In the rotated basis, the circuitry isolates components of the rotated spectral quadrature components at target frequencies, and generates weighted phase-coherent harmonic spectral quadrature components by applying a scale-independent nonlinearity to the isolated components. The circuitry generates a harmonic spectral component by applying an inverse transformation that rotates a spectrum of the weighted phase-coherent harmonic spectral quadrature components from the rotated basis to the standard basis. The circuitry combines the harmonic spectral component with frequencies of the audio channel outside of the target frequencies to generate an output channel, and provides the output channel to the speaker.

3. 发明申请

US20210112340A1 SUBBAND SPATIAL AND CROSSTALK PROCESSING USING SPECTRALLY ORTHOGONAL AUDIO COMPONENTS 有权
公开(公告)号：US20210112340A1
公开(公告)日：2021-04-15
申请号：US16983827
申请日：2020-08-03
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
IPC分类号： H04R3/14 , H04R3/04 , H04R5/04 , H04S7/00
摘要： A system processes an audio signal using spectrally orthogonal sound components. The system includes a circuitry that generates a mid component and a side component from a left channel and a right channel of the audio signal. The circuitry generates a hyper mid component including spectral energy of the side component removed from spectral energy of the mid component, and generate a residual mid component including spectral energy of the hyper mid component removed from the spectral energy of the mid component. The circuitry filters subbands of the residual mid component, such as to apply a subband spatial processing. The circuitry generates a left output channel and a right output channel using the filtered subbands of the residual mid component.

4. 发明授权

US10313820B2 Sub-band spatial audio enhancement 有权
公开(公告)号：US10313820B2
公开(公告)日：2019-06-04
申请号：US15646821
申请日：2017-07-11
申请人： Boomcloud 360, Inc.
发明人： Zachary Seldess
IPC分类号： H04S3/00 , H04S7/00
摘要： An audio system provides for spatial enhancement of an audio signal including a left input channel and a right input channel. The system may include a spatial frequency band divider, a spatial frequency band processor, and a spatial frequency band combiner. The spatial frequency band divider processes the left input channel and the right input channel into a spatial component and a nonspatial component. The spatial frequency band processor applies subband gains to subbands of the spatial component to generate an enhanced spatial component, and applies subband gains to subbands of the nonspatial component to generate an enhanced nonspatial component. The spatial frequency band combiner combines the enhanced spatial component and the enhanced nonspatial component into a left output channel and a right output channel. In some embodiments, the spatial component and nonspatial component are separated into spatial subband components and nonspatial subband components for the processing.

5. 发明申请

US20230025801A1 COLORLESS GENERATION OF ELEVATION PERCEPTUAL CUES USING ALL-PASS FILTER NETWORKS 有权
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.
发明人： Zachary Seldess , Joseph Anthony Mariglio, III
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.

6. 发明申请

US20220070581A1 SUBBAND SPATIAL PROCESSING AND CROSSTALK CANCELLATION SYSTEM FOR CONFERENCING 有权
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
IPC分类号： H04R3/12 , H04S7/00 , H04R3/04 , H04R5/02 , H04N7/15 , H04R5/04
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.

7. 发明授权

US11206486B2 Subband spatial processing and crosstalk cancellation system for conferencing 有权
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
IPC分类号： H04R3/12 , H04S7/00 , H04R3/04 , H04R5/02 , H04N7/15 , H04R5/04
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.

8. 发明授权

US10757527B2 Crosstalk cancellation b-chain 有权
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
IPC分类号： H04S7/00 , H04R5/02 , H04R5/04 , H04R3/14 , H04S1/00 , H04R3/04
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.

9. 发明申请

US20220408188A1 SPECTRALLY ORTHOGONAL AUDIO COMPONENT PROCESSING 有权
公开(公告)号：US20220408188A1
公开(公告)日：2022-12-22
申请号：US17890213
申请日：2022-08-17
申请人： Boomcloud 360 Inc.
发明人： Zachary Seldess
IPC分类号： H04R3/14 , H04R3/04 , H04S7/00 , H04R5/04 , G06N20/00 , G06F17/14 , G10L19/02
摘要： A system processes an audio signal using spectrally orthogonal sound components. The system includes a circuitry that generates a mid component and a side component from a left channel and a right channel of the audio signal. The circuitry generates a hyper mid component including spectral energy of the side component removed from spectral energy of the mid component. The circuitry filters the hyper mid component, such as to provide spatial cue processing including panning or binaural processing, dynamic range processing, or other types of processing. The circuitry generates a left output channel and a right output channel using the filtered hyper mid component.

10. 发明授权

US11218806B2 Crosstalk cancellation for opposite-facing transaural loudspeaker systems 有权
公开(公告)号：US11218806B2
公开(公告)日：2022-01-04
申请号：US16669440
申请日：2019-10-30
申请人： Boomcloud 360, Inc.
发明人： Zachary Seidess , Joseph Mariglio
IPC分类号： H04R3/14 , H04R5/02 , H04S1/00 , H04R5/04
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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