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公开(公告)号：WO2017192972A1
公开(公告)日：2017-11-09
申请号：PCT/US2017/031269
申请日：2017-05-05
Applicant: DTS, INC. , JOT, Jean-Marc , NOH, Daekyoung , CASSIDY, Ryan James , KATSIANOS, Themis George , WALKER, Oveal
Inventor： JOT, Jean-Marc , NOH, Daekyoung , CASSIDY, Ryan James , KATSIANOS, Themis George , WALKER, Oveal
Abstract: Systems and methods can provide an elevated, virtual loudspeaker source in a three-dimensional soundfield using loudspeakers in a horizontal plane. In an example, a processor circuit can receive at least one height audio signal that includes information intended for reproduction using a loudspeaker that is elevated relative to a listener, and optionally offset from the listener's facing direction by a specified azimuth angle. A first virtual height filter can be selected for use based on the specified azimuth angle. A virtualized audio signal can be generated by applying the first virtual height filter to the at least one height audio signal. When the virtualized audio signal is reproduced using one or more loudspeakers in the horizontal plane, the virtualized audio signal can be perceived by the listener as originating from an elevated loudspeaker source that corresponds to the azimuth angle.
Abstract translation: 系统和方法可以在水平面上使用扬声器在三维声场中提供升高的虚拟扬声器源。 在一个示例中，处理器电路可以接收至少一个高度音频信号，该高度音频信号包括旨在使用相对于收听者升高的扬声器进行再现的信息，并且可选地从收听者的面向方向偏离指定的方位角。 根据指定的方位角，可以选择第一个虚拟高度过滤器使用。 可以通过将第一虚拟高度滤波器应用于至少一个高度音频信号来生成虚拟化音频信号。 当使用水平平面中的一个或多个扬声器再现虚拟音频信号时，收听者可以将虚拟化音频信号感知为来源于对应于方位角的升高的扬声器源。
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公开(公告)号：WO2020037044A1
公开(公告)日：2020-02-20
申请号：PCT/US2019/046505
申请日：2019-08-14
Applicant: DTS, INC.
Inventor： NOH, Daekyoung
Abstract: A loudspeaker system can include a first loudspeaker driver provided in a substantially fixed spatial relationship relative to a microphone. The loudspeaker driver can be tuned, for example automatically and without user input. In an example, the tuning can include receiving transfer function reference information about the first loudspeaker driver and the microphone, and receiving information about a desired acoustic response for the loudspeaker system. The tuning can include determining a simulated response for the loudspeaker system using a first input signal and the transfer function reference information, and can include providing the first input signal to the first loudspeaker driver. In response to the first input signal, an actual response for the loudspeaker driver can be received using the microphone. A compensation filter can be determined for the loudspeaker system based on the determined simulated response and the received actual response for the loudspeaker system.
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Patent Agency Ranking
公开(公告)号：WO2018164750A1
公开(公告)日：2018-09-13
申请号：PCT/US2017/067026
申请日：2017-12-18
Applicant: DTS, INC.
Inventor： NOH, Daekyoung , JOT, Jean-Marc , MOHAMED, Twafik
Abstract: An audio signal processing system can be configured to provide virtualized audio information in a three-dimensional soundfield using at least a pair of loudspeakers or headphones. The system can include an audio input configured to receive audio program information that includes at least N discrete audio signals, a first virtualization processor circuit configured to generate intermediate virtualized audio information by filtering M of the N audio signals, and a second virtualization processor circuit configured to generate further virtualized audio information by differently filtering K of the N audio signals, wherein K, M, and N are integers. The system can include an audio signal combination circuit to combine the intermediate virtualized audio information with at least one of the N audio signals, other than the M audio signals, to render fewer than N audio signals for transmission to a second virtualization processor circuit.
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公开(公告)号：WO2019046706A1
公开(公告)日：2019-03-07
申请号：PCT/US2018/049075
申请日：2018-08-31
Applicant: DTS, INC.
Inventor： SHI, Guangji , URSACHI, Vlad Ionut , NOH, Daekyoung , KATSIANOS, Themis George , KALKER, Antonius , BIGIOI, Petronel , JOT, Jean-Marc
Abstract: Systems and methods discussed herein can provide three-dimensional audio virtualization with sweet spot adaptation. In an example, an audio processor circuit can be used to update audio signals for sweet spot adaptation based on information from at least one depth sensor or camera about a listener position in a listening environment.
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公开(公告)号：WO2016130579A1
公开(公告)日：2016-08-18
申请号：PCT/US2016/017197
申请日：2016-02-09
Applicant: DTS, INC.
Inventor： NOH, Daekyoung , KATSIANOS, Themis
IPC: H04B15/00
CPC classification number: G10L21/0388 , H03G5/005 , H04R3/00 , H04R3/04 , H04S1/007
Abstract: A multi-rate audio processing system and method provides real-time measurement and processing of amplitude/phase changes in the transition band of the lowest frequency subband caused by the audio processing that can be used to apply amplitude/phase compensation to the higher subband(s). Tone signals may be injected into the transition band to provide strong tonal content for measurement and processing. The real-time measurement and compensation adapts to time- varying amplitude/phase changes regardless of the source of the change (e.g. non-linear time-varying linear or user control parameters) and provides universal applicability for any linear audio processing.
Abstract translation: 多速率音频处理系统和方法提供由可用于向较高子频带施加幅度/相位补偿的音频处理引起的最低频率子带的过渡频带中的振幅/相位变化的实时测量和处理（ S）。 音频信号可以被注入到过渡频带中，以提供用于测量和处理的强音调内容。 无论变化的来源（例如非线性时变线性或用户控制参数），实时测量和补偿都适用于时变幅度/相位变化，并为任何线性音频处理提供通用性。
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公开(公告)号：WO2020081103A1
公开(公告)日：2020-04-23
申请号：PCT/US2018/064961
申请日：2018-12-11
Applicant: DTS, INC.
Inventor： NOH, Daekyoung , WALKER, Oveal
Abstract: The directivity of a loudspeaker describes how sound produced by the speaker varies with angle and frequency. Low-frequency sound tends to be relatively omnidirectional, while high-frequency sound tends to be more strongly directional. Because the two ears of a listener are in different spatial positions, the direction-dependent performance of the speakers can produce unwanted differences in volume or spectral content between the two ears. For example, high-frequency sounds may appear to be muffled in one ear, compared to the other. A multi-speaker sound system can employ binaural directivity compensation, which can compensate for directional variations in performance of each speaker, and can reduce or eliminate the difference in volume or spectral content between the left and right ears of a listener. The binaural directivity compensation can optionally be included with spatial audio processing, such as crosstalk cancellation, or can optionally be included with loudspeaker equalization.
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公开(公告)号：WO2019191611A1
公开(公告)日：2019-10-03
申请号：PCT/US2019/024876
申请日：2019-03-29
Applicant: DTS, INC.
Inventor： WARNER, Aaron Kube , NOH, Daekyoung , JOHNS, Michael
IPC: G10L19/008 , H04R5/00
Abstract: Circuitry can separate a multi-channel input signal into a center signal and a residual signal, apply time-varying center and residual gains to the center and residual signals, and combine the gain-adjusted center and residual signals to form a multi-channel audio signal. The center and residual gains are automatically determined in response to the center and residual signals so as to prevent each channel of the multi-channel audio signal from exceeding a target volume. During first times, the center and residual gains can vary synchronously so as to ensure that amplitude and phase relationships among channels in the multi-channel input signal are retained into the multi-channel audio signal. During second times, the center and residual gains can vary independently so as to reduce the energy of the residual signal compared to the center signal in the multi-channel audio signal.
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