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公开(公告)号：US09986338B2
公开(公告)日：2018-05-29
申请号：US15107031
申请日：2015-01-06
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Warren Mansfield , Eugene Edward Radzik , Alan J. Seefeldt , Jared Smith , C. Phillip Brown , Michael Smithers
CPC classification number: H04R5/02 , H04R1/345 , H04R3/14 , H04R5/04 , H04R2201/021 , H04R2201/025 , H04R2205/024 , H04S7/301 , H04S7/305 , H04S7/307 , H04S2400/11 , H04S2420/07
Abstract: Embodiments are directed to speakers and circuits that reflect sound off a wall surface (114) to a listening location at a distance from a speaker. The reflected sound (103) provides direct audio cues to reproduce audio objects that have direct audio components without the need for direct firing speakers. The speaker comprises sideward firing drivers (108) to reflect sound off of the wall surface (114) and represents a virtual direct speaker (116). A virtual direct filter is applied to the sideward-firing driver signal to improve the perception of direct audio transmitted by the sideward firing speaker (108) to provide optimum reproduction of the reflected sound. The virtual direct filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the sideward-firing driver (108).
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Patent Agency Ranking
公开(公告)号：US09933989B2
公开(公告)日：2018-04-03
申请号：US15031953
申请日：2014-10-28
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Nicolas R. Tsingos , Rhonda Wilson , Sunil Bharitkar , C. Phillip Brown , Alan J. Seefeldt , Remi Audfray
IPC: H04S5/02 , H04S3/00 , H04S3/02 , G10L19/008 , H04R5/033 , G06F3/16 , H04S7/00 , H04R5/04 , H04S1/00 , G06F3/0484
CPC classification number: G06F3/162 , G06F3/04842 , H04R5/04 , H04S1/007 , H04S7/304 , H04S7/306 , H04S2400/03 , H04S2400/13 , H04S2420/01
Abstract: Embodiments are described for a method of rendering audio for playback through headphones comprising receiving digital audio content, receiving binaural rendering metadata generated by an authoring tool processing the received digital audio content, receiving playback metadata generated by a playback device, and combining the binaural rendering metadata and playback metadata to optimize playback of the digital audio content through the headphones.
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公开(公告)号：US20170179905A1
公开(公告)日：2017-06-22
申请号：US15447518
申请日：2017-03-02
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Brett G. Crockett , Alan J. Seefeldt
IPC: H03G3/30 , G10L21/038 , G10L25/21 , H04R3/04
CPC classification number: H03G3/3005 , G10L21/038 , G10L25/21 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/04 , H04R2430/03
Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
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公开(公告)号：US20170179904A1
公开(公告)日：2017-06-22
申请号：US15447503
申请日：2017-03-02
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Brett G. Crockett , Alan J. Seefeldt
IPC: H03G3/30 , G10L21/038 , G10L25/21 , H04R3/04
CPC classification number: H03G3/3005 , G10L21/038 , G10L25/21 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/04 , H04R2430/03
Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
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公开(公告)号：US20150245157A1
公开(公告)日：2015-08-27
申请号：US14422033
申请日：2013-08-20
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Alan J. Seefeldt
Abstract: Embodiments are described for a system for virtual rendering of object based audio through binaural rendering of each object followed by panning of the resulting stereo binaural signal between a plurality of cross-talk cancelation circuits feeding a corresponding plurality of speaker pairs. In comparison to prior art virtual rendering utilizing a single pair of speakers, the described embodiments improve the spatial impression for both listeners inside and outside of the cross-talk canceller sweet spot. Also described is an improved equalization technique for a crosstalk canceller that is computed from both the crosstalk canceller filters and the binaural filters and applied to a monophonic audio signal being virtualized. The described techniques improve timbre for listeners outside of the sweet-spot as well as a smaller timbre shift when switching from standard rendering to virtual rendering.
Abstract translation: 描述了用于通过每个对象的双耳渲染来虚拟呈现基于对象的音频的系统的实施例，然后在产生相应的多个扬声器对的多个串扰消除电路之间平移所产生的立体声双耳信号。 与使用单个扬声器的现有技术的虚拟渲染相比，所描述的实施例改善了串扰消除器最佳点之内和外的两个听众的空间印象。 还描述了一种用于串扰消除器的改进的均衡技术，其从串扰消除器滤波器和双耳滤波器两者计算并应用于被虚拟化的单声道音频信号。 所描述的技术改进了甜点之外的听众的音色以及从标准渲染切换到虚拟渲染时的较小的音色偏移。
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公开(公告)号：US20130243222A1
公开(公告)日：2013-09-19
申请号：US13850380
申请日：2013-03-26
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Brett G. Crockett , Alan J. Seefeldt
IPC: H03G1/00
CPC classification number: H03G3/3005 , G10L21/038 , G10L25/21 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/04 , H04R2430/03
Abstract: In one disclosed aspect, modifications are applied to an audio signal at least partly in response to auditory events. In another aspect, an input channel is divided into auditory events by detecting changes in a measurable characteristic of the input signal.
Abstract translation: 在一个公开的方面中，至少部分地响应于听觉事件将修改应用于音频信号。 在另一方面，通过检测输入信号的可测量特性的变化，输入信道被分成听觉事件。
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