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公开(公告)号：WO2021006871A1
公开(公告)日：2021-01-14
申请号：PCT/US2019/040837
申请日：2019-07-08
申请人： DTS, INC.
发明人： STEIN, Edward , WALSH, Martin
摘要： Systems and methods discussed herein can change a frame of reference for a first spatial audio signal. The first spatial audio signal can include signal components representing audio information from different depths or directions relative to an audio capture location associated with an audio capture source device with a first frame of reference relative to an environment. Changing the frame of reference can include receiving a component of the first spatial audio signal, receiving information about a second frame of reference relative to the same environment, determining a difference between the first and second frames of reference, and, using the determined difference between the first and second frames of reference, determining a first filter to use to generate at least one component of a second spatial audio signal that is based on the first spatial audio signal and is referenced to the second frame of reference.
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公开(公告)号：WO2020247033A1
公开(公告)日：2020-12-10
申请号：PCT/US2020/018447
申请日：2020-02-14
申请人： DTS, INC.
发明人： GOODWIN, Michael M. , FEJZO, Zoran
IPC分类号： G10L19/008 , H04S3/00
摘要： A spatial audio signal decoder is provided that includes a processor and storage media that includes instructions that when executed cause the processor to: receive input spatial audio signals including a set of channels having an input spatial format; partition the set of channels into at least a first channel subset and a second channel subset; determine an estimate of a number and directions of arrival of directional audio sources represented in at least a portion of the set of channels; determine one of the active and passive components of the first channel subset signals, based at least in part on the estimated number and directions of arrival of directional audio sources; determine the other of the active and passive components of the first channel subset signals, based upon the determined one of the active and passive components of the first channel subset signals; decode the components to an output signal.
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公开(公告)号：WO2020139588A1
公开(公告)日：2020-07-02
申请号：PCT/US2019/066315
申请日：2019-12-13
申请人： DTS, INC.
摘要： A method comprises: receiving an image of a real-world environment; using a machine learning classifier, classifying the image to produce classifications associated with acoustic presets for an acoustic environment simulation, the acoustic presets each including acoustic parameters that represent sound reverberation; and selecting an acoustic preset among the acoustic presets based on the classifications.
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公开(公告)号：WO2020037282A1
公开(公告)日：2020-02-20
申请号：PCT/US2019/046938
申请日：2019-08-16
申请人： DTS, INC.
发明人： GOODWIN, Michael M.
摘要： A method to encode audio signals is provided for use with an audio capture device that includes multiple microphones having a spatial arrangement on the device, a method to encode audio signals comprising: receiving multiple microphone signals corresponding to the multiple microphones; determining a number and directions of arrival of directional audio sources represented in the one or more microphone signals; determining one of an active microphone signal component and a passive microphone signal component, based upon the determined number and directions of arrival; determining the other of the active microphone signal component and the passive microphone signal component, based upon the determined one of the active input spatial audio signal component and the passive input spatial audio signal component; encoding the active microphone signal component; encoding the passive microphone signal component.
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公开(公告)号：WO2020037280A1
公开(公告)日：2020-02-20
申请号：PCT/US2019/046936
申请日：2019-08-16
申请人： DTS, INC.
发明人： GOODWIN, Michael M. , STEIN, Edward
摘要： A method to decode audio signals is provided that includes: receiving an input spatial audio signal; determining directions of arrival of directional audio sources represented in the received input spatial audio signal; determining one of an active input spatial audio signal component and a passive spatial audio signal input component, based upon the determined directions of arrival; determining the other of the active input spatial audio signal component and the passive input spatial audio signal component, based upon the determined one of the active input spatial audio signal component and the passive input spatial audio signal component; decoding the active input spatial audio signal component to a first output format; and decoding the passive input spatial audio signal component to a second output format.
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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
申请人： DTS, INC.
发明人： NOH, Daekyoung
摘要： 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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公开(公告)号：WO2018200384A1
公开(公告)日：2018-11-01
申请号：PCT/US2018/028877
申请日：2018-04-23
申请人： DTS, INC.
摘要： An audio encoder can parse a digital audio signal into a plurality of frames, each frame including a specified number of audio samples, perform a transform of the audio samples of each frame to produce a plurality of frequency-domain coefficients for each frame, partition the plurality of frequency-domain coefficients for each frame into a plurality of bands for each frame, each band having bit data that represents a number of bits allocated for the band, and encode the digital audio signal and difference data to a bit stream (e.g., an encoded digital audio signal). The difference data can produce the full bit data when combined with estimate data that can be computed from data present in the bit stream. The difference data can be compressed to a smaller size than the full bit data, which can reduce the space required in the bit stream.
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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
申请人： DTS, INC.
发明人： NOH, Daekyoung , JOT, Jean-Marc , MOHAMED, Twafik
摘要： 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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9.发明申请
公开(公告)号：WO2018075967A1
公开(公告)日：2018-04-26
申请号：PCT/US2017/057729
申请日：2017-10-20
IPC分类号： H04R3/04 , G10K11/178 , G10L21/0208 , H03G5/16 , H03G9/02 , H04R1/10
摘要： Systems and methods to provide distortion sensing, prevention, and/or distortion-aware bass enhancement in audio systems can be implemented in a variety of applications. Sensing circuitry can generate statistics based on an input signal received for which an acoustic output is generated. In various embodiments, the statistics can be used such that a multi-notch filter can be used to provide input to a speaker to generate the acoustic output. In various embodiments, the statistics from the sensing circuitry can be provided to a bass parameter controller coupled to bass enhancement circuitry to operatively provide parameters to the bass enhancement circuitry. The bass enhancement circuitry can provide a bass enhanced signal for generation of the acoustic output, based on the parameters. Various combinations of multi-notch filter and bass enhancement circuitry using statistics from sensing circuitry can be implemented to provide an enhanced acoustic output. Additional apparatus, systems, and methods are disclosed.
摘要翻译： 用于在音频系统中提供失真感测，预防和/或失真感知低音增强的系统和方法可以在各种应用中实施。 感测电路可以基于接收到的输入信号来生成统计数据，其中生成声学输出。 在各种实施例中，可以使用统计数据，使得可以使用多陷波滤波器向扬声器提供输入以生成声学输出。 在各种实施例中，来自感测电路的统计数据可被提供给耦合到低音增强电路的低音参数控制器，以操作地向低音增强电路提供参数。 基于参数，低音增强电路可以提供用于生成声学输出的低音增强信号。 可以实现使用来自感测电路的统计数据的多陷波滤波器和低音增强电路的各种组合，以提供增强的声学输出。 披露了其他设备，系统和方法。
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公开(公告)号：WO2017165157A1
公开(公告)日：2017-09-28
申请号：PCT/US2017/022355
申请日：2017-03-14
申请人： DTS, INC.
IPC分类号： H04N7/173
CPC分类号： H04N21/233 , H04N21/43615 , H04N21/439 , H04N21/4398 , H04N21/4852 , H04N21/6125 , H04N21/654 , H04N21/6587 , H04N21/8106
摘要： A method and apparatus for processing object-based audio signals for reproduction through a playback system is provided. The apparatus receives a plurality of object-based audio signals in at least one audio frame. In addition, the apparatus receives at least one audio object command associated with at least one object-based audio signal of the plurality of object-based audio signals. In addition, the apparatus processes the at least one object-based audio signal based on the received at least one audio object command. Further, the apparatus renders a set of object-based audio signals of the plurality of object-based audio signals to a set of output signals based on the at least one audio object command. The at least one audio frame may be received from one of a set top box, an OD player, or a television. The apparatus may be an AV receiver or a television.
摘要翻译： 提供了一种用于处理基于对象的音频信号以通过回放系统进行再现的方法和设备。 该装置在至少一个音频帧中接收多个基于对象的音频信号。 另外，该设备接收与多个基于对象的音频信号中的至少一个基于对象的音频信号相关联的至少一个音频对象命令。 另外，该装置基于所接收的至少一个音频对象命令来处理至少一个基于对象的音频信号。 此外，所述装置基于所述至少一个音频对象命令将所述多个基于对象的音频信号的一组基于对象的音频信号呈现为一组输出信号。 该至少一个音频帧可以从机顶盒，OD播放器或电视机中的一个接收。 该设备可以是AV接收机或电视机。
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