公开(公告)号：US20240135937A1

公开(公告)日：2024-04-25

申请号：US18327623

申请日：2021-12-02

申请人： Dolby Laboratories Licensing Corporation ,  Dolby International AB

发明人： Harald Mundt ,  David S. McGrath ,  Rishabh Tyagi

IPC分类号： G10L19/008 ,  G10L19/083 ,  H04S7/00

CPC分类号： G10L19/008 ,  G10L19/083 ,  H04S7/00 ,  H04S2400/03

摘要： Disclosed is an audio signal encoding/decoding method that uses an encoding downmix strategy applied at an encoder that is different than a decoding re-mix/upmix strategy applied at a decoder. Based on the type of downmix coding scheme, the method comprises: computing input downmixing gains to be applied to the input audio signal to construct a primary downmix channel; determining downmix scaling gains to scale the primary downmix channel; generating prediction gains based on the input audio signal, the input downmixing gains and the downmix scaling gains; determining residual channel(s) from the side channels by using the primary downmix channel and the prediction gains to generate side channel predictions and subtracting the side channel predictions from the side channels; determining decorrelation gains based on energy in the residual channels; encoding the primary downmix channel, the residual channel(s), the prediction gains and the decorrelation gains; and sending the bitstream to a decoder.

公开(公告)号：US11792574B2

公开(公告)日：2023-10-17

申请号：US17904971

申请日：2020-09-29

申请人： D&M Holdings, Inc.

发明人： Yoshiharu Imahama ,  Shunichi Tani

IPC分类号： G06F3/16 ,  H04R5/04 ,  H03F1/00 ,  H04R3/12 ,  H04S7/00

CPC分类号： H04R5/04 ,  H03F1/00 ,  H04R3/12 ,  H04S7/00 ,  G06F3/165 ,  H03F2200/03

摘要： An AV amplifier contains an input unit to input digital data and an operation unit that receives a reproduction instruction. A switching unit switches whether to output the digital data input to a server interface unit or DSP in response to the reproduction instruction. The DSP processes the digital data output to obtain and output a two-channel signal, which the server interface unit transmits by the switching unit to a server and receives an audio signal from the server. An audio reproduction unit reproduces the server interface unit received audio signal and an audio signal output by the DSP. An output unit outputs the reproduced audio signal to each speaker and a control unit controls the switching unit and the server interface unit in response to the reproduction instruction from the user. The control unit controls the switching unit, when two-channel audio reproduction is instructed from the user.

公开(公告)号：US11743675B2

公开(公告)日：2023-08-29

申请号：US17699130

申请日：2022-03-20

申请人： Sonos, Inc.

发明人： Steven Beckhardt ,  Jonathan Paul Lang ,  Jonathon Reilly

IPC分类号： H04S7/00 ,  H04N21/43 ,  H04N21/436 ,  H04N21/4425 ,  H04N21/81 ,  H04R27/00 ,  H04L65/75 ,  G06F3/16 ,  H04R5/04 ,  H04R29/00 ,  H04S3/00

CPC分类号： H04S7/308 ,  G06F3/165 ,  H04L65/764 ,  H04N21/4302 ,  H04N21/43615 ,  H04N21/4425 ,  H04N21/8113 ,  H04R5/04 ,  H04R27/00 ,  H04R29/001 ,  H04R2227/005 ,  H04R2420/03 ,  H04R2420/05 ,  H04S3/008 ,  H04S7/00

摘要： An example implementation may involve a group of wearable playback devices including a first wearable playback device and a second wearable playback device. The wearable playback devices render multi-channel audio content according to particular playback responsibilities in the group. When a failure or other issue with the second wearable playback device occurs, the first playback device assumes at least part of the playback responsibility of the second playback device.

公开(公告)号：US20180329674A1

公开(公告)日：2018-11-15

申请号：US15946561

申请日：2018-04-05

申请人： Sonos, Inc.

发明人： Steven Beckhardt ,  Jonathan Paul Lang ,  Jonathon Reilly

IPC分类号： G06F3/16 ,  H04R5/04 ,  H04L29/06 ,  H04N21/43 ,  H04R29/00 ,  H04R27/00 ,  H04N21/81 ,  H04N21/4425 ,  H04N21/436 ,  H04S3/00 ,  H04S7/00

CPC分类号： G06F3/165 ,  H04L65/4084 ,  H04L65/604 ,  H04L65/80 ,  H04N21/4302 ,  H04N21/43615 ,  H04N21/4425 ,  H04N21/8113 ,  H04R5/04 ,  H04R27/00 ,  H04R29/001 ,  H04R2227/005 ,  H04R2420/03 ,  H04R2420/05 ,  H04S3/008 ,  H04S7/00 ,  H04S7/308

摘要： An example implementation may involve a first playback device rendering audio content. The example implementation may also involve the first playback device detecting that a second playback device has been connected to a playback system. After detecting that the second playback device has been connected to the playback system, the first playback device may determine a playback responsibility associated with the second playback device. The determined playback responsibility may include a grouping with the first playback device. After determining the playback responsibility associated with the second playback device, the first playback device may direct the second playback device to render the audio content.

公开(公告)号：US10057700B2

公开(公告)日：2018-08-21

申请号：US15400142

申请日：2017-01-06

申请人： Proctor Consulting LLP

发明人： James A. Proctor, Jr. ,  James Arthur Proctor, III

IPC分类号： G06F15/173 ,  H04R29/00 ,  H04R27/00 ,  G06F3/16 ,  H04W4/00 ,  H04W4/80

CPC分类号： H04R29/007 ,  G06F3/165 ,  H04L12/2834 ,  H04L12/2838 ,  H04L65/4084 ,  H04N5/268 ,  H04N21/2665 ,  H04N21/4126 ,  H04N21/42203 ,  H04N21/43615 ,  H04N21/4367 ,  H04N21/439 ,  H04N21/44218 ,  H04N21/4622 ,  H04N21/8106 ,  H04R27/00 ,  H04R2227/003 ,  H04R2227/005 ,  H04S7/00 ,  H04S7/303 ,  H04W4/80

摘要： An intelligent hub for interfacing with other devices and performing smart audio or video source selection.

公开(公告)号：US20180122425A1

公开(公告)日：2018-05-03

申请号：US15550197

申请日：2016-02-10

申请人： DEVIALET

发明人： Charles COQUERET ,  Pierre-Emmanuel CALMEL ,  Alexandre HUFFENUS

IPC分类号： G11B27/10 ,  H04N21/43 ,  H04R3/12

CPC分类号： G11B27/10 ,  H04B2203/542 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/434 ,  H04N21/8106 ,  H04R3/12 ,  H04R27/00 ,  H04S7/00 ,  H04S2420/01

摘要： The present invention concerns a synchronisation method for synchronising at least two systems for rendering multimedia streams, the method comprising: the detection of a pulse of a same signal of fixed frequency by each rendering system and by a main clock system, the generation of a main clock signal and a dependent clock signal, the estimating of a main local date of reception of the subsequent pulse and a dependent local date of reception of the subsequent pulse, the calculation of the difference between the main local date and the dependent local date, the iteration of the preceding steps until a first condition concerning the calculated differences is met, the receiving of a multimedia stream, by each of the rendering systems, the sending of a rendering date, and the calculation of an effective date for the rendering of the multimedia stream.

公开(公告)号：US20180102131A1

公开(公告)日：2018-04-12

申请号：US15838031

申请日：2017-12-11

申请人： Electronics and Telecommunications Research Institute

发明人： Yong Ju Lee ,  Jeong Il Seo ,  Jae Hyoun Yoo ,  Seung Kwon Beack ,  Jong Mo Sung ,  Tae Jin Lee ,  Kyeong Ok Kang ,  Jin Woong Kim ,  Tae Jin Park ,  Dae Young Jang ,  Keun Woo Choi

IPC分类号： G10L19/008 ,  H04S7/00

CPC分类号： H04S7/00 ,  G10L19/008 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/03

摘要： Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.

公开(公告)号：US20180033307A1

公开(公告)日：2018-02-01

申请号：US15549839

申请日：2016-02-02

申请人： Shuichi TAYAMA ,  IMAGE CO., LTD.

发明人： Shuichi TAYAMA ,  Yasuhisa NAKAJIMA

IPC分类号： G08G1/16 ,  G06T7/55 ,  B60Q9/00 ,  H04R5/04 ,  G08G1/04 ,  B60R1/00

CPC分类号： G08G1/166 ,  B60Q5/005 ,  B60Q9/008 ,  B60R1/00 ,  B60R11/02 ,  B60R2300/105 ,  B60R2300/301 ,  B60R2300/8093 ,  G01S13/867 ,  G06T7/55 ,  G06T2207/10044 ,  G06T2207/30261 ,  G08G1/04 ,  G08G1/16 ,  H04R1/40 ,  H04R3/00 ,  H04R5/04 ,  H04R2499/13 ,  H04S5/02 ,  H04S7/00

摘要： An object is to provide an approaching-body warning device capable of causing a drive to recognize, with enhanced reality, a direction and a location of a detection target approaching to an own vehicle. It is provided with a detection system including cameras, a radar sensor, and the like for detecting detection targets approaching to an own vehicle from various directions. A plurality of speakers is arranged in a cabin of the own vehicle to surround a driver. When the detection system determines that a detection target is approaching from any of various directions, an audio control unit provides, to the driver, enhanced reality of the approaching detection target by producing warning sound with surround signals output to a surround stereo audio system to form a sound field corresponding to an approaching direction.

公开(公告)号：US09860662B2

公开(公告)日：2018-01-02

申请号：US15088994

申请日：2016-04-01

申请人： Sonos, Inc.

发明人： Simon Jarvis ,  Klaus Hartung ,  Chris Davies ,  Tim Sheen

IPC分类号： G06F17/00 ,  H04R29/00 ,  H04R27/00 ,  G06F3/16

CPC分类号： H04R29/007 ,  G06F3/165 ,  H04R27/00 ,  H04R29/008 ,  H04R2227/003 ,  H04S7/00 ,  H04S7/40

摘要： A computing device may transmit playback device configuration information to a given playback device. The computing device may then receive calibration data corresponding to each playback device of a plurality of playback devices, and receive playback device characteristic data indicating at least one playback device characteristic for each playback device of the plurality of playback devices. Based on at least the received calibration data and the received playback device characteristic data, the computing device may determine updated playback device configuration information and transmit data indicating the updated playback device configuration information to the given playback device.

公开(公告)号：US09848268B2

公开(公告)日：2017-12-19

申请号：US15110881

申请日：2015-01-13

申请人： KYOCERA Corporation

发明人： Noriyuki Kushima ,  Kentarou Miyazato ,  Tooru Takahashi ,  Shuichi Fukuoka ,  Kenji Yamakawa ,  Masato Murahashi ,  Hiroshi Ninomiya

IPC分类号： H04R17/00 ,  H04R7/26 ,  H04R7/04 ,  H04R7/18 ,  H04S7/00

CPC分类号： H04R17/005 ,  H04R1/28 ,  H04R7/04 ,  H04R7/045 ,  H04R7/18 ,  H04R7/26 ,  H04R17/00 ,  H04S7/00 ,  H04S2420/01

摘要： There are provided an acoustic generator capable of generating a high-quality sound having little distortion, and an acoustic generation device and an electronic apparatus using the same. An acoustic generator has a vibration body, a first exciter, a second exciter, a first damping material and a second damping material. The vibration body has two surfaces which are positioned with a gap therebetween in a first direction. The first exciter and the second exciter are disposed on the vibration body. The first damping material is disposed on the vibration body and has a first portion which overlaps the first exciter when viewed in the first direction. The second damping material is disposed on the vibration body and has a second portion which overlaps the second exciter when viewed in the first direction.