公开(公告)号：US20190200150A1

公开(公告)日：2019-06-27

申请号：US16290469

申请日：2019-03-01

申请人： Electronics and Telecommunications Research Institute

发明人： Seung Kwon BEACK ,  Jeong Il SEO ,  Jong Mo SUNG ,  Tae Jin LEE ,  Dae Young JANG ,  Jin Soo CHOI

IPC分类号： H04S1/00 ,  H04S3/00 ,  G10L19/008 ,  H04S5/00

CPC分类号： H04S1/007 ,  G10L19/008 ,  H04S3/008 ,  H04S3/02 ,  H04S5/00 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/07 ,  H04S2420/03

摘要： Provided are an encoding method of a multichannel signal, an encoding apparatus to perform the encoding method, a multichannel signal processing method, and a decoding apparatus to perform the decoding method. The decoding method may include identifying an N/2-channel downmix signal derived from an N-channel input signal; and generating an N-channel output signal from the identified N/2-channel downmix signal using a plurality of one-to-two (OTT) boxes. If a low frequency effect (LFE) channel is absent in the output signal, the number of OTT boxes may be equal to N/2 where N/2 denotes the number of channels of the downmix signal.

公开(公告)号：US20190191250A1

公开(公告)日：2019-06-20

申请号：US16217542

申请日：2018-12-12

申请人： YAMAHA CORPORATION

发明人： Shinichi FUJITA

IPC分类号： H04R5/04 ,  H04S5/00

CPC分类号： H04R5/04 ,  H03F3/181 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/189 ,  H04S5/00 ,  H05K1/0219 ,  H05K1/142 ,  H05K1/144 ,  H05K2201/0715 ,  H05K2201/09672

摘要： An amplifying device includes first and second substrates. The first substrate has a first mounting surface, and the second substrate has a second mounting surface. The first mounting surface of the first substrate that is opposite the second substrate is provided with: a first ground line; a first signal line configured to transfer an audio signal; and a first amplifier configured to amplify the audio signal. The second mounting surface of the second substrate that is opposite the first substrate is provided with: a second grounded line; a second signal line configured to transfer an audio signal; and a second amplifier configured to amplify the audio signal. The first and second grounded lines correspond to each other in position and shape, and overlap in planar view. The first and second signal lines correspond to each other in position and shape, and overlap in planar view.

公开(公告)号：US10306391B1

公开(公告)日：2019-05-28

申请号：US15846052

申请日：2017-12-18

申请人： Apple Inc.

发明人： Sylvain J. Choisel ,  Afrooz Family ,  Brandon J. Rice

IPC分类号： H04S1/00 ,  H04S5/00 ,  H04S7/00

CPC分类号： H04S1/007 ,  H04S5/00 ,  H04S7/306 ,  H04S2400/03

摘要： A transition between a stereophonic presentation and a monophonic presentation of a stereophonic input signal that includes a left channel signal and a right channel signal extracts content that is present at similar levels but not in-phase between the left and right channel signals to produce at least one of a left enhancement signal and a right enhancement signal. The left channel signal, the right channel signal, and only one of the left and right enhancement signals are combined to produce a monophonic signal for the monophonic presentation. Cross-fading between the left channel signal and the monophonic signal and between the right channel signal and the monophonic signal may be used to transition between the stereophonic presentation and the monophonic presentation. The stereophonic input signal may be up-mixed to produce enhancement signal. A similar transition between a multichannel presentation and a monophonic presentation of a multichannel signal is described.

公开(公告)号：US20190037332A1

公开(公告)日：2019-01-31

申请号：US16149802

申请日：2018-10-02

申请人： BOSE CORPORATION

发明人： Jeffery R. VAUTIN ,  Michael S. DUBLIN

IPC分类号： H04S5/00 ,  H04S7/00 ,  H04R1/32 ,  H04R5/02 ,  H04S3/00

CPC分类号： H04S5/00 ,  H04R1/323 ,  H04R5/023 ,  H04R2499/13 ,  H04S3/008 ,  H04S7/30 ,  H04S7/302 ,  H04S2400/03 ,  H04S2400/11

摘要： Systems and methods of simulating acoustic output at a location corresponding to source position data are disclosed. A particular method includes receiving an audio signal and source position data associated with the audio signal. A set of speaker signals are applied to a plurality of speakers, where the set of speaker driver signals causes the plurality of speakers to generate acoustic output that simulates output of the audio signal by an audio source at a location corresponding to the source position data.

公开(公告)号：US20180352357A1

公开(公告)日：2018-12-06

申请号：US16042775

申请日：2018-07-23

申请人： Sonos, Inc.

发明人： Mike Chamness ,  Romi Kadri

IPC分类号： H04S5/00 ,  H04S7/00

CPC分类号： H04S5/005 ,  H04R1/323 ,  H04R3/12 ,  H04R5/02 ,  H04S3/02 ,  H04S5/00 ,  H04S7/30 ,  H04S7/305 ,  H04S7/307 ,  H04S2400/05 ,  H04S2400/13

摘要： An example playback device receives left and right channels of audio content and generates a center channel of the audio content by combining at least a portion of the left right channels. The playback device generates first and second side channels of the audio content by combining the center channel and a difference of the left channel and the right channel and combining the center channel and an inverse of the difference of the left channel and the right channel, respectively. The first and second side channels are attenuated by a filter with a given cutoff frequency. When volume is adjusted, the cutoff frequency is adjusted based on the volume level of the playback device and the spectral characteristics of the audio content. The cutoff frequency is positively related to the volume level such that a volume increase causes a corresponding increase in the cutoff frequency and vice versa.

公开(公告)号：US20180324539A1

公开(公告)日：2018-11-08

申请号：US15589986

申请日：2017-05-08

申请人： MICROSOFT TECHNOLOGY LICENSING, LLC

发明人： Andrew William LOVITT

IPC分类号： H04S5/00 ,  H04S1/00 ,  G02B27/01 ,  G06T19/00 ,  G02B27/22

CPC分类号： H04S5/00 ,  G02B27/017 ,  G02B27/22 ,  G02B2027/0178 ,  H04R27/00 ,  H04S1/00

摘要： An improved method and system for enhancing a user's experience within an immersive environment is disclosed. Solutions and implementations provided improve the user's ability to both hear and identify sounds from outside the user's immersive experience. Implementations include receiving audio and sensor input from the environment, analyzing the received input and adjusting either the display or audio outputs generated for the user based in part on pre-determined policies.

公开(公告)号：US10085104B2

公开(公告)日：2018-09-25

申请号：US15004659

申请日：2016-01-22

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Christian Ertel ,  Johannes Hilpert ,  Andreas Hoelzer ,  Achim Kuntz ,  Jan Plogsties ,  Michael Kratschmer

IPC分类号： H04S5/00 ,  G10L19/008 ,  H04S7/00

CPC分类号： H04S5/005 ,  G10L19/008 ,  H04S5/00 ,  H04S7/308 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/05 ,  H04S2420/03

摘要： An audio decoder device for decoding a compressed input audio signal having at least one core decoder having one or more processors for generating a processor output signal based on a processor input signal, wherein a number of output channels of the processor output signal is higher than a number of input channels of the processor input signal, wherein each of the one or more processors has a decorrelator and a mixer, wherein a core decoder output signal having a plurality of channels has the processor output signal, and wherein the core decoder output signal is suitable for a reference loudspeaker setup; at least one format converter device configured to convert the core decoder output signal into an output audio signal, which is suitable for a target loudspeaker setup; and a control device configured to control at least one or more processors in such way that the decorrelator of the processor may be controlled independently from the mixer of the processor, wherein the control device is configured to control at least one of the decorrelators of the one or more processors depending on the target loudspeaker setup.

公开(公告)号：US20180270600A1

公开(公告)日：2018-09-20

申请号：US15761351

申请日：2016-09-29

申请人： Dolby International AB

发明人： Johannes BOEHM ,  Xiaoming CHEN

IPC分类号： H04S7/00 ,  H04S1/00

CPC分类号： H04S7/302 ,  H04S1/007 ,  H04S5/00 ,  H04S7/30 ,  H04S2400/05 ,  H04S2400/11 ,  H04S2420/11

摘要： For generating 3D audio content from a two-channel stereo signal, the stereo signal (x(t)) is partitioned into overlapping sample blocks and is transformed into time-frequency domain. From the stereo signal directional and ambient signal components are separated, wherein the estimated directions of the directional components are changed by a predetermined factor, wherein, if changes are within a predetermined interval, they are combined in order to form a directional centre channel object signal. For the other directions an encoding to Higher Order Ambisonics (HOA) is performed. Additional ambient signal channels are generated by de-correlation and rating by gain factors, followed by encoding to HOA. The directional HOA signals and the ambient HOA signals are combined, and the combined HOA signal and the centre channel object signals are transformed to time domain.

公开(公告)号：US20180262856A1

公开(公告)日：2018-09-13

申请号：US15538892

申请日：2016-02-09

申请人： DOLBY LABORATORIES LICENSING CORPORATION

发明人： Jun WANG ,  Lie LU ,  Lianwu CHEN ,  Mingqing HU

IPC分类号： H04S5/00 ,  H04R1/32 ,  H04S7/00

CPC分类号： H04S5/005 ,  H04R1/323 ,  H04S3/008 ,  H04S5/00 ,  H04S7/308 ,  H04S2400/11

摘要： Example embodiments disclosed herein relates to upmixing of audio signals. A method of upmixing an audio signal is described. The method includes decomposing the audio signal into a diffuse signal and a direct signal, generating an audio bed at least in part based on the diffuse signal, the audio bed including a height channel, extracting an audio object from the direct signal, estimating metadata of the audio object, the metadata including height information of the audio object; and rendering the audio bed and the audio object as an upmixed audio signal, wherein the audio bed is rendered to a predefined position and the audio object is rendered according to the metadata. Corresponding system and computer program product are described as well.

公开(公告)号：US10003904B2

公开(公告)日：2018-06-19

申请号：US15629688

申请日：2017-06-21

申请人： GAUDI AUDIO LAB, INC.

发明人： Hyunoh Oh ,  Yonghyun Baek

IPC分类号： H04R5/00 ,  H04S7/00 ,  H04S5/00

CPC分类号： H04S7/304 ,  H04R2460/13 ,  H04S3/004 ,  H04S5/00 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2420/01

摘要： Disclosed is a binaural audio signal processing device. The binaural audio signal processing device includes a binaural renderer and an extra exciter. The binaural renderer receives an audio signal, and outputs a binaural-rendered audio signal by performing binaural rendering on the received audio signal. The extra exciter generates a stimulation to a body of a user, wherein the stimulation corresponds to the binaural-rendered audio signal.