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公开(公告)号：US20230379650A1
公开(公告)日：2023-11-23
申请号：US18364261
申请日：2023-08-02
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
CPC分类号： H04S7/304 , H04S7/30 , G06V10/752 , G06F3/012 , G10L21/0208 , H04R3/00 , H04R5/033 , H04R5/04 , H04S2400/11 , H04S2420/01
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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公开(公告)号：US11445321B2
公开(公告)日：2022-09-13
申请号：US17316559
申请日：2021-05-10
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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公开(公告)号：US10390171B2
公开(公告)日：2019-08-20
申请号：US16136211
申请日：2018-09-19
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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公开(公告)号：US20240305949A1
公开(公告)日：2024-09-12
申请号：US18666002
申请日：2024-05-16
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
CPC分类号： H04S7/304 , G06F3/012 , G06V10/752 , G10L21/0208 , H04R3/00 , H04R5/033 , H04R5/04 , H04S7/30 , H04S2400/11 , H04S2420/01
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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公开(公告)号：US12022277B2
公开(公告)日：2024-06-25
申请号：US18364261
申请日：2023-08-02
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
CPC分类号： H04S7/304 , G06F3/012 , G06V10/752 , G10L21/0208 , H04R3/00 , H04R5/033 , H04R5/04 , H04S7/30 , H04S2400/11 , H04S2420/01
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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公开(公告)号：US11785412B2
公开(公告)日：2023-10-10
申请号：US17943106
申请日：2022-09-12
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
CPC分类号： H04S7/304 , G06F3/012 , G06V10/752 , G10L21/0208 , H04R3/00 , H04R5/033 , H04R5/04 , H04S7/30 , H04S2400/11 , H04S2420/01
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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7.发明授权公开(公告)号：US11503423B2
公开(公告)日：2022-11-15
申请号：US16653130
申请日：2019-10-15
摘要： An audio rendering system includes a processor that combines audio input signals with personalized spatial audio transfer functions having room responses. The personalized spatial audio transfer functions are selected from a database having a plurality of candidate transfer functions derived from in-ear microphone measurements for a plurality of individuals. Alternatively, the personalized transfer functions are derived from actual in-ear measurements of the listener. A room modification module allows the user to modify the personalized spatial audio transfer functions to substitute a different room or to modify the characteristics of the selected room without requiring additional in ear measurements. The module segments the selected transfer function into regions including one or more of direct; head and torso influenced; early reflection, and late reverberation regions. Extraction and modification operations are performed on one or more of the regions to alter the perceived sound.
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公开(公告)号：US11006235B2
公开(公告)日：2021-05-11
申请号：US16544746
申请日：2019-08-19
发明人： Teck Chee Lee , Geith Mark Benjamin Leslie , Mark Anthony Davies , Edwin Tomboza , Toh Onn Desmond Hii
摘要： A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
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